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arc line files - VII.A CTIO Calibration Files (appendix) [index] arc line id figures - VII.A CTIO Calibration Files (appendix) [index] calibration files - VII.A CTIO Calibration Files (appendix) [index] default files - VII.A CTIO Calibration Files (appendix) [index] distortion correction - II.3.6 Mapping the distortions (2dfrutti) [index] distortion correction - II.3.6 Transforming images (2dfrutti) [index] extinction files - VII.A CTIO Calibration Files (appendix) [index] flux standard stars - VII.A CTIO Calibration Files (appendix) [index] help afiles - Describe the standard astrometry file format [astcat] help catalogs - Describe the astrometric catalog configuation file [xastcat] help catalogs - Describe the astrometric catalog configuation file [astcat] help catquery - Catalog and image survey API [xastcat] help ccsystems - Describe the supported celestial coordinate systems [astcat] help ccsystems - Describe the supported celestial coordinate systems [xastcat] help config - Print description of the configuration file format [photcal] help config - Print description of the configuration file format [xphotcal] help files - Describe the standard astrometry file format [xastcat] help pcintro - Print a short introduction to the photcal package [photcal] help pcintro - Print a short introduction to the xphotcal package [xphotcal] help surveys - Describe the image surveys configuation file [astcat] imtool formats - VII.I Using the Computers at CTIO (appendix) [index] imtool window - VII.F Using the Imtool Window (appendix) [index] manual help - VII.I Using the Computers at CTIO (appendix) [index] multihole files - VII.A CTIO Calibration Files (appendix) [index] nd filter curves - VII.A CTIO Calibration Files (appendix) [index] neutral density - II.3.12 ND Filter Corrections (2dfrutti) [index] neutral density - VII.A CTIO Calibration Files (appendix) [index] standard stars - VII.A CTIO Calibration Files (appendix) [index] suntool windows - VII.E Using the Suntool Windows (appendix) [index] telnet to US - VII.I Using the Computers at CTIO (appendix) [index] tfinder -- Search the catalog - predict, center and fit the coords [finder] tilde commands - VII.B Using the UNIX Mailer (appendix) [index] translation files - V3.3 Setting Up the Translation File(2dfrutti) [index] yd2p, yp2d - Convert between diode <--> pixel positions. [fos]
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Task   Description Package
2dfrutti - Reduction Manual for 2DFrutti Datamanuals
CTIO - VII.A CTIO Calibration Files (appendix)index
CTIO - VII.I Using the Computers at CTIO (appendix)index
SunView - VII.I Using the Computers at CTIO (appendix)index
aatrgo - AAT-RGO spectrograph reductionspec1
aatrgo - AAT-RGO spectrograph reductionspec2
abc - Apply Barycentric Corrections to ROSAT event data.rosat
absfity - Smooth an FOS sensitivity curve.y_calib
absfitz - Generate a smooth sensitivity curve.z_calib
abssenv - Calculate digital absolute sensitivity.hsp
absseny - Compute an FOS sensitivity curve.y_calib
abssenz - Compute the absolute sensitivity ratio.z_calib
abund - Derive ionic abundances relative to H+ in 3-zone nebulanebular
accelerators - VII.I Using the Computers at CTIO (appendix)index
access - Determine the type or accessibility of a filefio
access - Test if a file existslanguage
acoadd - Image coaddition using Lucy Method with optional acceleration.contrib
acs - Tasks for calibrating ACS data.hst_calib
addet - add the E-terms to a pre IAU 1976 mean placeslalib
addmasks - Combine several masks or bad pixel lists.imgtools
addnewkeys - Add new CALFOS keywords to FOS headers.fos
addsets - Add subsets of strings of spectraiids
addsets - Add subsets of strings of spectrairs
addshots - Adds a shot noise light curve to an input light curve.xte
addsine - Adds a sine curve to an input light curve.xte
addstar - Add artificial stars to an image using the computed psfdaophot
adumpcat - Catalog access debugging taskxastcat
adumpcat - Catalog access debugging taskastcat
adumpim - Image survey access debugging taskastcat
adumpim - Image survey access debugging taskxastcat
afiltpars - Default astrometry file filtering parametersastcat
afiltpars - Default astrometry file filtering parametersxastcat
afin - convert a sexagesimal character string to radians (s.p.)slalib
ahedit - Initialize the image wcs and set standard keywordsastcat
ahedit - Initialize the image wcs and set standard keywordsxastcat
aidpars - Automatic line identification parameters and algorithmonedspec
aimfind - Select images containing catalog objectsxastcat
aimfind - Select images containing catalog objectsastcat
airmas - compute the airmass at a given zenith distanceslalib
airmass - Compute the airmass at a given elevation above the horizonastutil
allocate - I.5 Tutorial #2 Reading and Writing Data to Tape (irafintro)index
allocate - VII.I Using the Computers at CTIO (appendix)index
allstar - Group and fit psf to multiple stars simultaneouslydaophot
altaz - compute altazimuth positions, velocities, accelerationsslalib
amp - convert a geocentric apparent to post IAU 1976 mean placeslalib
amplitude - Calculate guess amplitude given n,l,m.grtools
ampqk - convert a geocentric apparent to post IAU 1976 mean placeslalib
analoglin - Verify the analog linearity of HSP detectors.hsp
aop - convert an apparent to observed placeslalib
aoppa - pre-compute the set of apparent to observed place parametersslalib
aoppat - recompute the apparent to observed place sidereal time parameterslalib
aopqk - convert an apparent to observed placeslalib
apall - Extract 1D spectra (all parameters in one task)apextract
apall - Extract 1D spectra (all parameters in one task)argus
apall - Extract 1D spectra (all parameters in one task)ctioslit
apall - Extract 1D spectra (all parameters in one task)echelle
apall - Extract 1D spectra (all parameters in one task)hydra
apall - Extract 1D spectra (all parameters in one task)kpnocoude
apall - Extract 1D spectra (all parameters in one task)kpnoslit
apall - Extract 1D spectra (all parameters in one task)specred
apbackground - Background subtraction algorithmsapextract
apdefault - Set the default aperture parameterskpnocoude
apdefault - Set the default aperture parameterskpnoslit
apdefault - Set the default aperture parameters and apidtableapextract
apdefault - Set the default aperture parameters and apidtableechelle
apdefault - Set the default aperture parameters and apidtablespecred
apdemos - Various tutorial demonstrationsapextract
apedit - Edit apertures interactivelyapextract
apedit - Edit apertures interactivelyargus
apedit - Edit apertures interactivelyctioslit
apedit - Edit apertures interactivelyechelle
apedit - Edit apertures interactivelyhydra
apedit - Edit apertures interactivelykpnocoude
apedit - Edit apertures interactivelykpnoslit
apedit - Edit apertures interactivelyspecred
apercen - Find the aperture center (location phase I).hsp
aperlocy - Analyze a target acquisition image.fos
apershift - Shift the wavelengths for an object not centered inz_calib
apextract - Aperture Extraction Packagetwodspec
apfile - Prepare an aperture corrections file from a text filephotcal
apfile - Prepare an aperture corrections file from a text filexphotcal
apfind - Automatically find spectra and define aperturesapextract
apfind - Automatically find spectra and define aperturesargus
apfind - Automatically find spectra and define aperturesctioslit
apfind - Automatically find spectra and define aperturesechelle
apfind - Automatically find spectra and define apertureshydra
apfind - Automatically find spectra and define apertureskpnocoude
apfind - Automatically find spectra and define apertureskpnoslit
apfind - Automatically find spectra and define aperturesspecred
apfit - Fit 2D spectra and output the fit, difference, or ratioapextract
apfit - Fit 2D spectra and output the fit, difference, or ratioechelle
apfit - Fit 2D spectra and output the fit, difference, or ratiospecred
apflatten - Remove overall spectral and profile shapes from flat fieldsapextract
apflatten - Remove overall spectral and profile shapes from flat fieldsctioslit
apflatten - Remove overall spectral and profile shapes from flat fieldsechelle
apflatten - Remove overall spectral and profile shapes from flat fieldskpnocoude
apflatten - Remove overall spectral and profile shapes from flat fieldskpnoslit
apflatten - Remove overall spectral and profile shapes from flat fieldsspecred
apmask - Create and IRAF pixel list mask of the aperturesapextract
apmask - Create and IRAF pixel list mask of the aperturesechelle
apmask - Create and IRAF pixel list mask of the aperturesspecred
apnoise - Compute and examine noise characteristics of spectraapextract
apnormalize - Normalize 2D apertures by 1D functionsapextract
apnormalize - Normalize 2D apertures by 1D functionsctioslit
apnormalize - Normalize 2D apertures by 1D functionsechelle
apnormalize - Normalize 2D apertures by 1D functionskpnocoude
apnormalize - Normalize 2D apertures by 1D functionskpnoslit
apnormalize - Normalize 2D apertures by 1D functionsspecred
apodize - apodize solar disc edge with a cosine bell curve (SRCpiece)suntrans
appendix - Appendices to the Reduction Manualsmanuals
apply_bary - apply the barycenter time corrections to the time-sorted QPOE filetimcor
approfiles - Profile determination algorithmsapextract
aprecenter - Recenter aperturesapextract
aprecenter - Recenter aperturesargus
aprecenter - Recenter aperturesctioslit
aprecenter - Recenter aperturesechelle
aprecenter - Recenter apertureshydra
aprecenter - Recenter apertureskpnocoude
aprecenter - Recenter apertureskpnoslit
aprecenter - Recenter aperturesspecred
apresize - Resize apertureskpnocoude
apresize - Resize apertureskpnoslit
apropos - List all the tasks related with a given subject.stsdas
apropos - Print help information about a subjectctio
apscatter - Fit and remove scattered lightargus
apscatter - Fit and remove scattered lighthydra
apscatter - Fit and subtract scattered lightapextract
apscatter - Fit and subtract scattered lightechelle
apscatter - Fit and subtract scattered lightspecred
apsum - Extract 1D spectrakpnocoude
apsum - Extract 1D spectrakpnoslit
aptest - Run basic tests on the apphot package tasksapphot
aptrace - Trace positions of spectraapextract
aptrace - Trace positions of spectraargus
aptrace - Trace positions of spectractioslit
aptrace - Trace positions of spectraechelle
aptrace - Trace positions of spectrahydra
aptrace - Trace positions of spectrakpnocoude
aptrace - Trace positions of spectrakpnoslit
aptrace - Trace positions of spectraspecred
apvariance - Extractions, variance weighting, cleaning, and noise modelapextract
arc - Fix header information for arc extractionsam
aread - Asynchronous read from a binary filefio
areadb - Asynchronous read from a binary file in byte unitsfio
aregpars - Default region parameter setastcat
aregpars - Default region parameter setxastcat
argus - CTIO ARGUS reduction packageimred
artcat - create an artificial catalogifocas
artdata - Artificial data generation package [up]noao
asca - ASCA mission specific packageftools
ascaarf - Generates an ASCA ARF file for an input PHA fileasca
ascaeffmap - Generates an ASCA EFF detector image file for an input PHA fileasca
ascaexpo - Generate an exposure map for an ASCA observation.asca
ascalin - Produce the ASCA calibrated science file data productsasca
ascii2pha - Creates an OGIP FITS PHA file from an ascii datasetheasarc
asifree - Free space allocated by asiinit or asisinitiminterp
asigeti - Fetch an integer parameteriminterp
asiinit - Initialize 1-D interpolant using default parametersiminterp
asirestore - Restore interpolant parameters and coefficientsiminterp
asisave - Save interpolant parameters and coefficientsiminterp
asisinit - Initialize 1-D interpolant using user parametersiminterp
asitype - Decode string into interpolant type and parametersiminterp
asivector - Evaluate interpolant at an array of ximinterp
asnexpand - Expand ASN tables to include extra ASC columns.nicmos
astcalc - Astronomical calculatorastutil
astcat - Astronomical catalog and surveys access package [up]noao
asthedit - Astronomical header editorastutil
astradius - Find images within a circle on the skyastutil
astrometry - Astrometry packagenoao
asttest - Run basic tests on the astcat packageastcat
asttimes - Compute UT, Julian day, epoch, and siderial timeastutil
astutil - Astronomical utilities package [up]noao
at_data - Documentation on the atomic reference datanebular
atmdsp - apply atmospheric dispersion terms to refraction coefficientsslalib
attitude - Compute summary information for an ASCA attitude fileasca
autoarc - Automatic arcline identification taskspec1
autoarc - Automatic arcline identification taskspec2
autocorr - Autocorrelate an image.fourier
autofocas - automatic FOCAS processing scriptifocas
autoidentify - Automatically identify lines and fit dispersiononedspec
autopsf - automatic PSF estimationifocas
autospec - Fit model components to a list of input spectraaspec
av2m - compute a rotation matrix from an axial vector (s.p.)slalib
average - Compute the mean and standard deviation of a listlists
avgvel - Evaluate average velocity for one pixelfabry
avshift - Averages the shifts measured on the 4 WFPC chips.dither
await - Wait for an asynchronous i/o transfer to completefio
awaitb - Wait for i/o, and return status in byte unitsfio
awrite - Asynchronous write to a binary filefio
awriteb - Asynchronous write to a binary file in byte unitsfio
axispar - Specify axis and scaling parameters (pset for 'sgraph')stplot
axispar - Specify scaling attributes (pset for 'sgraph')tbplot
back - Return to the previous directory (after a chdir)language
background - Fit and subtract a line or column backgroundctioslit
background - Fit and subtract a line or column backgroundgeneric
background - Fit and subtract a line or column backgroundkpnocoude
background - Fit and subtract a line or column backgroundkpnoslit
background - Fit and subtract a line or column backgroundlongslit
background - Fit and subtract a line or column backgroundspecred
background - I.3 A Quick View of IRAF (irafintro)index
badpiximage - Create a bad pixel mask image (from imred.ccdred V2.10.4)nobsolete
badpixupdate - Update bad pixel mask to include bad pixels detected by xzapxdimsum
badpixupdate - Update bad pixel mask to include bad pixels detected by xzapxirred
badpixupdate - Update bad pixel mask to include pixels zapped repeatedly by xzapdimsum
bal_plot - Plot the current BAL histogram (Einstein IPC data only).xspectral
bandpar - Calculate photometric parameters of a passbandsynphot
base2dec - Convert a number in a base to base 10 (decimal).tools
bases - Convert an integer to hex, octal, and binarynlocal
basic2d - Performs two dimensional image reduction on STIS data.stis
batchred - Batch processing of IIDS/IRS spectraiids
batchred - Batch processing of IIDS/IRS spectrairs
bbodypars - Pset with parameters for black-body function.fitting
bct - Produce a Barycenter Correction Table from ROSAT orbit datarosat
be_ds_rotate - rotate bright Earth and deep survey maps from BKFAC tableeintools
bear - compute the bearing of a point on a sphere w.r.t. anotherslalib
beep - Send a beep to the terminallanguage
bepos - determine the best source position from a rough position listdetect
beta - Calculate Beta after Brodsky & Vorontsov, Tenerife 1998.grtools
bevington - P.R. Bevington's statistical analysis packagemath
bgqcplot - 1 to 4 row and/or column plots produced in batch modeqcgong
bhkmethod - Compute the generalized Kendall's tau correlation coefficient.statistics
bias - General bias subtraction toolsimred
biaseq - Equalize bias levels in MultiAccum readouts.nicmos
bibliography - Summary of IRAF documentationdoc
big_mak_list - description of big_mak input list. (help file only-no task)merge
bin2iraf - Convert binary files into IRAF imagesctio
bincurve - Bins vectors and outputs as a light curveheasarc
binfil - Create a binary file from an IRAF imageproto
binpairs - Bin pairs of (x,y) points in log separationnproto
binspec - Bin spectra in vector columnsheasarc
binstrm - bin values in an input text streamifocas
bintxt - Convert a binary file to an IRAF text filedataio
bitcount - Accumulate the bit statistics for a list of imagesobsutil
bitcount - Count the bits for each pixel of an integer imagenlocal
bkden - determine the background density of a given regiondetect
bkfac_make - create background factors table from QPOE fileeintools
bkg - Subtract a background from a binned light curveheasarc
blink - Blink two framesiis
blot - Image sampling using interpolation (reverse "drizzling").dither
bmodel - Build a model image from isophotal analysis data.isophote
boxinterp - Fill areas with smoothed values from surroundingimgtools
bplot - Batch plot of spectra with SPLOTkpnocoude
bplot - Batch plot of spectra with SPLOTkpnoslit
bplot - Batch plots of spectralongslit
bplot - Batch plots of spectraonedspec
bracewell - Create functions and view them with FTssobsolete
brktime - Convert a long integer time into year, month, day, etc.etc
bscale - Linearly transform the intensities of a list of imagesproto
bspec - Compute FOS scattered light spectrum using FFTs.fos
bswap - Byte swap a filenlocal
bswitch - Beam-switch strings of spectra to make obj-sky pairsiids
bswitch - Beam-switch strings of spectra to make obj-sky pairsirs
btoi - Boolean to integeretc
buckleyjames - Compute linear regression coeffs based on Kaplan-Meier residuals.statistics
bugs - description of known IRAF/PROS bugsxray
bugs - Bug reports for installed softwaredoc
bundle - Co-average sets of images taken at a single telescope pointingdimsum
burst - Remove bursts of events from time ordered event listtime
burst - form small l files from super images (SRCpiece)suntrans
bwfilter - 1-D Fourier filtering.playpen
bye - Exit a task or packagelanguage
c4mpars - Edit the 4m MOSAIC centering parametersxphotred
cache - Cache parameter files, or print the current cache listlanguage
caf2r - convert degrees, arcminutes, and arcseconds to radiansslalib
calbasic - Set up basic information needed for calibrationtaucal
calc_bary - calculate the barycenter time correctionstimcor
calc_factors - add bright Earth & deep survey factors to BKFAC tableeintools
calcband - Calculate a model passband.synphot
calcomp - Plot metacode on a Calcomp pen plotterplot
calcphot - Calculate photometric quantities for spectra and passbands.synphot
calcrpsf - Calculates a radial point spread functioncaltools
calcspec - Calculate a model spectrum.synphot
caldj - convert a Gregorian calendar date to a modified Julian dateslalib
cale_fits2qp - convert fits to qpoe for Einstein dataxinstall
calfoc - Pipeline calibration code for FOC data.foc
calfos - Pipeline calibration for FOS.fos
calhrs - Pipeline calibration for HRS.hrs
calhsp - Perform pipeline calibration correction of HSP data files.hsp
calibrate - Apply extinction and flux calibrations to spectractioslit
calibrate - Apply extinction and flux calibrations to spectraechelle
calibrate - Apply extinction and flux calibrations to spectrakpnocoude
calibrate - Apply extinction and flux calibrations to spectrakpnoslit
calibrate - Apply extinction and flux calibrations to spectralongslit
calibrate - Apply extinction and flux calibrations to spectraonedspec
calibrate - Apply sensitivity correction to spectraiids
calibrate - Apply sensitivity correction to spectrairs
calibrate - Extinction and flux calibrate spectraspecred
calnica - Pipeline calibration for single NICMOS images.nicmos
calnicb - Pipeline calibration for NICMOS associations.nicmos
calpolar - Perform polarimetry processing of calibrated data.spec_polar
calr_fits2qp - convert fits to qpoe for Rosat dataxinstall
calr_qp2fits - convert qpoe to fits for Rosat dataxinstall
calrun - Set up information for each filetaucal
calstis - Process STIS images (imaging and spectrum) through thestis
caltools - Calibration data manipulation packageftools
calwfp - Run the WF/PC calibration code on an input image.wfpc
calwp2 - Routine calibration of HST Wide Field Planetary Camera-II images.wfpc
calyd - convert a Gregorian calendar date to a Julian calendar year, dayslalib
carrousel - Calibrate HRS carrousel position.z_calib
cat2exp - create exposure map from constant aspect tableeintools
cat_make - create constant aspect table from QPOE fileeintools
catalog - Select and print fields from ADC CD-ROM table catalogsadccdrom
catfits - Produce a catalog of FITS files on tape or on diskfitsio
cathodemap - Compute the granularity of the HRS photocathode.z_calib
catmatch - match objects in single catalog to form a matched catalogifocas
catparams - create or modify catalog non-interactivelyifocas
catsort - sort catalog by certain fieldsifocas
cc2s - convert Cartesian to spherical coordinates (s.p.)slalib
cc62s - convert a 6-vector from Cartesian to spherical coordinatesslalib
ccdgeometry - Discussion of CCD coordinate/geometry keywordsccdred
ccdgeometry - Discussion of CCD coordinate/geometry keywordsquad
ccdgeometry - Discussion of CCD coordinate/geometry keywordsquadred
ccdgeometry - Discussion of CCD coordinate/geometry keywordsxccdred
ccdgroups - Group CCD images into image listsccdred
ccdgroups - Group CCD images into image listsquad
ccdgroups - Group CCD images into image listsquadred
ccdgroups - Group CCD images into image listsxccdred
ccdinfo - print detpars, gain table, and temperaturesccdacq
ccdinstrument - Review and edit instrument translation filesccdred
ccdinstrument - Review and edit instrument translation filesquad
ccdinstrument - Review and edit instrument translation filesquadred
ccdinstrument - Review and edit instrument translation filesxccdred
ccdlist - List CCD processing informationccdred
ccdlist - List CCD processing informationquad
ccdlist - List CCD processing informationquadred
ccdlist - List CCD processing informationxccdred
ccdlist - List mosaic processing informationmscred
ccdlist - List mosaic processing informationmscred
ccdlist - List mosaic processing informationmultampccd
ccdlist - List mosaic processing informationmultampccd
ccdman - Reduction Manual for CCD Direct Imagingmanuals
ccdmask - Create a pixel mask from a CCD imagenmisc
ccdproc - Process CCD images (including quadformat data)quadred
ccdred - Generic CCD reductionsimred
ccdred - VII.I Using the Computers at CTIO (appendix)index
ccdtest - CCD test and demonstration packageccdred
ccdtest - CCD test and demonstration packagexccdred
ccdtime - Compute time, magnitude, and signal-to-noise for CCDsastutil
ccdtypes - Description of the CCD image typesccdred
ccdtypes - Description of the CCD image typesquad
ccdtypes - Description of the CCD image typesquadred
ccdtypes - Description of the CCD image typesxccdred
ccfind - Find catalog sources in an imageimcoords
ccmap - Compute image plate solutions using matched coordinate listsimcoords
ccsetwcs - Create an image celestial wcs from the ccmap plate solutionimcoords
ccstd - Transform to and from standard astrometric coordinatesimcoords
ccsystems - Describe the supported celestial coordinate systemsskywcs
cctoc - Character constant to charfmtio
cctran - Transform coordinate lists using the ccmap plate solutionimcoords
ccxymatch - Match celestial and pixel coordinate listsimcoords
cd - Change directorylanguage
cd2tf - convert an interval in days to hours, minutes, and secondsslalib
cellmap - block a qpoe file at detect cell size resolutiondetect
censor - Information about the censoring indicator in survival analysis.statistics
center - Compute accurate centers for a list of objectsapphot
center - Compute accurate centers for a list of objectsirred
centerflux - Compute the flux values for the center of a diode array.z_calib
centerpars - Edit the centering algorithm parametersdaophot
centerpars - Edit the centering parametersapphot
centerpars - Edit the centering parametersirred
centro - Find the centroid of the solar imagegongcor
cgausspars - Pset with parameters for constrained Gaussians function.fitting
cgiparse - Parse STRING_QUERY environment variable into task parametersobsutil
chart - Interactively chart 2-dimensional datamtools
chcalpar - Modify calibration keyword values.ctools
chdeposit - Deposit a character in a string with overflow protectionfmtio
chdir - Change directorylanguage
checkds - Check images for Date/Scan collisions.fts
checkwfpc - Perform consistency checks on a WF/PC reference file.wfpc
chfetch - Fetch a character from a stringfmtio
chgkeywrd - Change keywords in a header file.sobsolete
chip - Put information on CCD chip into a standard filescp
chiplot - plot a chi-square table (output of period)xtiming
chkconfig - Check the configuration file for grammar and syntax errorsphotcal
chkconfig - Check the configuration file for grammar and syntax errorsxphotcal
chnode - Change the node in the pixel path for a list of imagesnlocal
chpixfile - Change pixel file name in image headersctio
chpixtype - Change the pixel type of a list of imagesimutil
chrlwr - Convert a character to lower casefmtio
chrupr - Convert a character to upper casefmtio
chscan - Change the scan number of an image.fts
cktime - Checks that a time column is time orderedtime
cl - Execute commands from the standard inputlanguage
clampc - GONG+ Clamp correctiongongcor
clampr - Clamp calibration correctiongongcor
clbye - A cl followed by a bye (used to save file descriptors)language
clcmd - Send a command to the CL (restricted)clio
cldj - convert a Gregorian calendar date to a modified Julian dateslalib
clean - replace objects by skyifocas
cleanhd - Clean SAM specific things out of an image headersam
cleansis - Detect anomalous ASCA SIS pixel values and output the cleanedasca
cleanup - Remove dud pixels and 16 bit errorsscp
clear - Clear the terminal screenlanguage
clgfil - Get a file from a list opened with clpopn[isu]clio
clginterp - Get integer code for interpolator typextools
clglp[bcsilrdx] - Get the next value from a list-structured CL parameterclio
clglstr - Get the next value from a string list-structured CL parameterclio
clgsec - Get and decode an image sectionxtools
clgstr - Get the value of a CL string type parameterclio
clgwrd - Get the first word from a string valued CL parameterclio
clio - Command Language i/osys
clman - CL reference manualdoc
clpcls - Close a list opened with clpopn[isu]clio
clplen - Number of elements in a list opened with clpopn[isu]clio
clpopni - Open a sorted input filename templateclio
clpopns - Open a sorted filename template or namelistclio
clpopnu - Open an unsorted filename template or namelistclio
clprintf - Formatted print to a CL parameterfmtio
clpstr - Set the value of a string valued CL parameterclio
clscan - Scan a CL parameterfmtio
clyd - convert a Gregorian calendar date a Julian calendar year, dayslalib
cnvdate - Convert long integer time to date string (short format)etc
cnvtime - Convert long integer time to time string (long format)etc
coadd - Calculate average measurements in specified phase intervals.timeseries
coefdiag_file - description of mode coefficient diagram filesuntrans
coefs - Extract mtn reduced ceofficients from henear scansiids
coefs - Extract mtn reduced ceofficients from henear scansirs
cogetr - Efficent image column accessxtools
cogonphot - Create a 2m ONIS IR standard star observations file using cogsxphotred
coincor - Correct spectra for detector count ratesiids
col2img - Converts a collimator response dataset to an imagecaltools
colbias - Fit and subtract an average column biasbias
colnames - Specify star catalog column names (pset for 'skymap').stplot
colselect - Select column rangesctio
columns - Convert multicolumn file to separate fileslists
comap - Map for column access procedurextools
combine - Combine CCD imagesccdred
combine - Combine CCD imagesquad
combine - Combine CCD imagesquadred
combine - Combine CCD imagesxccdred
combine - Combine images using various algorithms & pixel rejection schemes.wfpc
combine - Combine mosaic exposuresmscred
combine - Combine mosaic exposuresmscred
combine - Combine mosaic exposuresmultampccd
combine - Combine mosaic exposuresmultampccd
commands - A discussion of the syntax of IRAF commandslanguage
comparesets - Compare spectra at different waveplate positions.spec_polar
compass - Draw north and east arrows.sdisplay
comppars - Pset with parameters for composite (bb + powerlaw) function.fitting
compression - Image compression packagectio
comps - make a series of comparison observationsccdacq
compspec - Create a spectrum from an algebraic expression.testdata
concatenate - Concatenate a list of filessystem
conpars - Edit the 2m ONIS centering parametersxphotred
console - Help page for using the SUN console windowsmanuals
constr_set - Constrain a parameter for all components in the dbaspec
contents - Contents of the Reduction Manualsmanuals
continpars - Edit continuum subtraction parametersrv
continuum - Fit and normalize the continuum of multispec spectractioslit
continuum - Fit and normalize the continuum of multispec spectrakpnocoude
continuum - Fit and normalize the continuum of multispec spectrakpnoslit
continuum - Fit the continuum in spectraargus
continuum - Fit the continuum in spectraechelle
continuum - Fit the continuum in spectrahydra
continuum - Fit the continuum in spectraiids
continuum - Fit the continuum in spectrairs
continuum - Fit the continuum in spectraonedspec
continuum - Fit the continuum in spectraspecred
contour - Make a contour plot of an imageplot
controlpars - Pset with algorithm control parameters.fitting
convert - Convert ASCII data base format to STSDAS table format.sobsolete
convolve - Convolve a list of 1 or 2-D images with a rectangular filterimfilter
coords - description of IRAF coordinates used in PROSxray
coords - Compute celestial coordinatesctio
copyftt - Copy a list of FITS tables to a local directory with correct extensionsgasp
copymask - Copy mask from one format into another.sobsolete
cosmicrays - Detect and replace cosmic raysquad
cosmicrays - Detect and replace cosmic raysxccdred
cosmicrays - Remove cosmic rays using flux ratio algorithmcrutil
counmap - Unmap for column access procedurextools
count - Count the number of lines, words, characters in a text filesystem
countfiles - Count how many files are in the input file template.imgtools
countrate - Evaluate the photometric count rate of the HST.synphot
counts_plot - Plot the observed and/or predicted counts distributions.xspectral
countspec - Calculate FOS countrate spectrum from flux spectrum.fos
coxhazard - Compute the correlation probability by Cox's proportionalstatistics
cpars - Edit the general centering parametersxphotred
cputime - Get the CPU time consumed by the processetc
cqfimquery - Query an image file and return the resultscatquery
cqfinfo[n] - Get catalog results field info by name or numbercatquery
cqfquery - Query a catalog file and return the resultscatquery
cqget - Read catalog / survey configuration file keywords directlycatquery
cqgnrecord - Get next catalog results recordcatquery
cqgqpar[n] - Get query parameter info by name or numbercatquery
cqhinfo[n] - Get catalog results header value by name or numbercatquery
cqimquery - Query an image survey and return the resultscatquery
cqistat[ist] - Get survey results integer, string, or text parametercatquery
cqkinfo[n] - Get survey results image parameter info by name or numbercatquery
cqlocate[n] - Locate a catalog / survey by name or numbercatquery
cqmap - Map the catalog / survey configuration filecatquery
cqnqpars - Get the number of query parameterscatquery
cqquery - Query a catalog and return the resultscatquery
cqrstat[ist] - Get catalog results integer, string, or text parametercatquery
cqsetcat[n] - Set the current catalog / survey by name or numbercatquery
cqsqpar[n] - Set query parameter value by name or numbercatquery
cqstat[ist] - Get an integer, string, or text catalog / survey parametercatquery
cqunmap - Unmap the configuration filecatquery
cqwinfo[n] - Get survey results wcs parameter info by name or numbercatquery
cr2af - convert radians to degrees, arcminutes, and arcsecondsslalib
cr2tf - convert radians to hours, minutes, and secondsslalib
crashes - I.8 Common Problems: Their Cause and Cure (irafintro)index
craverage - Detect CRs against average and avoid objectscrutil
crcif - Creates an empty Calibration Index Filecaltools
crcombine - Combine multiple exposures to eliminate cosmic rayscrutil
credit - Interactively edit cosmic rays using an image displaycrutil
crfix - Fix cosmic rays in images using cosmic ray maskscrutil
crgrow - Grow cosmic rays in cosmic ray maskscrutil
cribsheet - Cribsheet for the Program Interfacedoc
crmedian - Detect and replace cosmic rays with median filtercrutil
crnebula - Detect and replace cosmic rays in nebular datacrutil
crossdriz - Builds a set of cross-correlation images (shift + rotation).dither
crrej - Combine images to make a cosmic ray free image.wfpc
crtpict - Generate greyscale plots of IRAF imagesplot
crutil - Tasks for detecting and removing cosmic raysimred
cs2c - convert spherical to Cartesian coordinates (s.p.)slalib
cs2c6 - convert spherical position/velocity to Cartesian coordinatesslalib
csccd - Reduction Manual for CSCCD Datamanuals
ctf2d - convert hours, minutes, and seconds to daysslalib
ctf2r - convert hours, minutes, and seconds to radiansslalib
ctio - VII.I Using the Computers at CTIO (appendix)index
ctioslit - CTIO spectrophotometric reduction packageimred
ctocc - Char to character constantfmtio
ctoi - Character to integerfmtio
ctol - Character to longfmtio
ctools - General calibration tools.hst_calib
ctotok - Character to lexical tokenfmtio
cubespe - Extract spectra from SLDC using cursor on 2d imagendprogs
curfit - Fit data with Chebyshev, Legendre or spline curveutilities
curfit - IRAF curve fitting packagemath
cursors - Graphics and image display cursorslanguage
cv - Control image device, display "snapshot"iis
cvacpts - Accumulate points into a data setcurfit
cvcoeff - Get coefficientscurfit
cvepower - Convert errors to power series equivalentscurfit
cvfree - Free space allocated by cvinitcurfit
cvinit - Make ready to fit a curve; set up parameters of fitcurfit
cvl - Load image display (newer version of 'display')iis
cvpower - Convert coefficients to power series coefficientscurfit
cvrestore - Restore curve parameters and coefficientscurfit
cvsave - Save curve parameters and coefficientscurfit
cvset - Input coefficients derived external to the CURFIT packagecurfit
cvstati - Get integer parametercurfit
cvvector - Evaluate curve at an array of xcurfit
cvzero - Zero arrays for new fitcurfit
d4mpars - Edit the 4m MOSAIC data dependent parametersxphotred
daf2r - convert degrees, arcminutes, and arcseconds to radians (d.p)slalib
dafin - convert a sexagesimal character string to radians (d.p.)slalib
daoedit - Review/edit algorithm parameters interactivelydaophot
daofind - Find stars in an image using the DAO algorithmdaophot
daofind - Find stars in an image using the dao algorithmapphot
daotest - Run basic tests on the daophot package tasksdaophot
darkcombine - Combine and process dark count imagesccdred
darkcombine - Combine and process dark count imagesquad
darkcombine - Combine and process dark count imagesquadred
darkcombine - Combine and process dark count imagesxccdred
darkcombine - Combine and process mosaic dark count exposuresmscred
darkcombine - Combine and process mosaic dark count exposuresmscred
darkcombine - Combine and process mosaic dark count exposuresmultampccd
darkcombine - Combine and process mosaic dark count exposuresmultampccd
darks - make a series of dark observationsccdacq
darkstat - Compute statistics on dark count calibration spectra.z_calib
darksub - Scale and subtract a dark count imagegeneric
darksum - Produce a report on dark count calibration spectra.z_calib
darkv - Calculate dark signals of individual observations.hsp
darkx - Create a FOC dark count image.focphot
dat - compute difference between TAI and UTC in secondsslalib
dataio - Data format conversion package (RFITS, etc.)clpackage
datapars - Edit the data dependent parametersapphot
datapars - Edit the data dependent parametersirred
datapars - Edit the image data dependent parametersdaophot
datarep - convert binary number representations to host computer formatxdataio
dav2m - compute a rotation matrix from an axial vector (d.p)slalib
daydark - Update current dark image with hot pixels from a daily dark.stis
dbcreate - Task for interactively creating specfit database filesspfitpkg
dbear - compute the bearing of a point on a sphere w.r.t. another (d.p.)slalib
dbjin - convert a character string to a Besselian/Julian epochslalib
dbms - Database management package (not yet implemented)clpackage
dc62s - convert Cartesian position/velocity to spherical coordinates (d.p.)slalib
dcapinfo - print contents of detcapccdacq
dcc2s - convert Cartesian to spherical coordinates (d.p)slalib
dcmpf - convert linear fit coefficients to geometric parametersslalib
dcs2c - convert spherical to Cartesian coordinates (d.p)slalib
dd2tf - convert interval in days to hours, minutes, and seconds (d.p.)slalib
ddiff - Print differences between two directory trees.tools
de2h - convert hour angle and declination to azimuth and elevation (d.p.)slalib
deaccum - Unstack ACCUM mode data into separate readouts.fos
deadtime - Update the exposure of PHA file by deadtime based on GTIstime
deadtimev - Calibrate the deadtime (digital linearity).hsp
deadtimey - Compute FOS paired-pulse coefficients.y_calib
deadtimez - Compute HRS paired pulse coefficients.z_calib
deallocate - I.5 Tutorial #2 Reading and Writing Data to Tape (irafintro)index
deboor - C.DeBoor's spline packagemath
dec2base - Convert a base 10 (decimal) number to another base.tools
declarations - Parameter/variable declarationslanguage
defitize - Convert all FITS files in currect directory to imagesmtools
defpac - Test if a package is definedlanguage
defpar - Test if a parameter is definedlanguage
defringe - Correct a G750L or G750M spectrum for fringing.stis
deftask - Test if a task is definedlanguage
delaytime - Calculate light time difference from observer to solar systemtimeseries
dematch - Match a list of density values to exposure valuesdtoi
demoqdphot - The QDPHOT demonstration scriptmxtools
demos - Demonstration and test playbackslongslit
demos - Demonstrations and testsargus
demos - Demonstrations and testsctioslit
demos - Demonstrations and testsechelle
demos - Demonstrations and testshydra
demos - Demonstrations and testskpnocoude
demos - Demonstrations and testskpnoslit
demowfpc2color - The WFPC2COLOR demonstration scriptmxtools
deredden - Apply interstellar extinction correctionlongslit
deredden - Apply interstellar extinction correctiononedspec
deredden - Apply interstellar extinction correctionspecred
deredden - Apply interstellar extinction correctionsctioslit
deredden - Apply interstellar extinction correctionsechelle
deredden - Apply interstellar extinction correctionsiids
deredden - Apply interstellar extinction correctionsirs
deredden - Apply interstellar extinction correctionskpnocoude
deredden - Apply interstellar extinction correctionskpnoslit
deriv - Take the absolute derivative of an image.dither
describe - Display a description of the named task(s) or package(s).stsdas
destreak5 - First pass processing CL script for 10830 grams.vtel
destreak5 - First pass processing CL script for 10830 grams.vtelold
detect - detect objects in an imageifocas
detmkreg - make a region file in logical coords from detect tablesdetect
detrend - remove trend from images on a heliographic coordinate system (SRCpiece)suntrans
deuler - convert Euler angles to a rotation matrix (d.p.)slalib
devices - Print information on the locally available devicessystem
devstatus - Print the status of a device (mta, mtb, ...)system
dezoomx - Dezoom an image, doubling line length in one dimension.focphot
dfe2mkf - Insert output information of FAINTDFE into existing MKF fileasca
dfltin - convert a character string to a floating point number (d.p.)slalib
dh2e - convert azimuth and elevation to hour angle and declination (d.p.)slalib
diagcols - Pset for zone temperature & density column namesnebular
dicoplot - Make dicomed plots of carrington maps.vtel
dicoplot - Make dicomed plots of carrington maps.vtelold
digiphot - Digital stellar photometry package [up]noao
dimxv - apply a 3D reverse rotation to a 3-vector (d.p.)slalib
diodemap - Compute the diode response non-uniformities.z_calib
directory - List the files in a directorysystem
diropen - Open a directory as a text filefio
disconlab - Display image and overlay contours and coordinates.sdisplay
disk_image - disk image description (help file only-no task)suntrans
dispcor - Dispersion correct and resample spectraonedspec
dispcor - Dispersion correct spectraargus
dispcor - Dispersion correct spectractioslit
dispcor - Dispersion correct spectraechelle
dispcor - Dispersion correct spectrahydra
dispcor - Dispersion correct spectraiids
dispcor - Dispersion correct spectrairs
dispcor - Dispersion correct spectrakpnocoude
dispcor - Dispersion correct spectrakpnoslit
dispcor - Dispersion correct spectraspecred
dispfity - Compute FOS wavelength dispersion coefficients.y_calib
display - Load an image or image section into the displaytv
display - VII.I Using the Computers at CTIO (appendix)index
displaying - I.7 Tutorial #5 Displaying Images (irafintro)index
disptrans - Transform dispersion units and apply air correctiononedspec
dither - Dithered image combination.analysis
djcal - convert an MJD to a Gregorian calendar dateslalib
djcl - convert an MJD to a Gregorian year, month, and dayslalib
dm2av - convert a rotation matrix to an axial vector (d.p)slalib
dmat - solve a set of simultaneous equations (d.p.)slalib
dmoon - compute approximate geocentric position/velocity of moon (d.p.)slalib
dmprmf - Displays OGIP standard Response FITS filecaltools
dmxv - multiple a 3-vector by a rotation matrix (d.p.)slalib
do3fiber - Process KPNO coude three fiber spectrakpnocoude
dofitplot - Do fit and then counts_plotxspectral
donpars - Edit the 2m ONIS data dependent parametersxphotred
dopcor - Apply doppler correctionslongslit
dopcor - Apply doppler correctionsonedspec
dopcor - Doppler correct spectrakpnocoude
dopcor - Doppler correct spectrakpnoslit
dopoff - Calculate on-board Doppler compensation for specalign.hrs
doslit - Process KPNO coude slit spectrakpnocoude
doslit - Process slit spectrakpnoslit
dparam - Dump a pset as a series of task.param=value assignmentslanguage
dpars - Edit the general data dependent parametersxphotred
dpav - compute the bearing of a point on a sphere w.r.t. another (d.p.)slalib
dqenormx - Normalize a detective efficiency file to unity.focphot
dr2af - convert radians to degrees, arcminutes, and arcseconds (d.p)slalib
dr2tf - convert radians to hours, minutes, and seconds (d.p.)slalib
drange - normalize an angle to the range -pi <= angle <= pi (d.p.)slalib
dranrm - normalize an angle to the range 0 <= angle <= 2pi (d.p.)slalib
drep2cal - task to install spectral & spatial calibration filesxinstall
drift - GONG instrument drift scan tools (ct)grasp
driftred - Process driftscan images for use in COPIPEdrift
driftsum - Process a day of driftscan imagesdrift
drizzle - Perform linear image reconstruction using "drizzling".dither
ds2c6 - convert spherical position/velocity to Cartesian coordinates (d.p.)slalib
ds2tp - project spherical coordinates onto the tangent plane (d.p)slalib
dsep - compute the angle between two points on a sphere (d.p.)slalib
dsimg - Save the image display buffer to an image.sobsolete
dt - estimate the approximate difference between ET and UT in secondsslalib
dtf2d - convert hours, minutes, and seconds to days (d.p)slalib
dtf2r - convert hours, minutes, and seconds to radians (d.p.)slalib
dtoi - Density to Intensity reductions for photographic platesimred
dtp2s - convert tangent plane to spherical coordinates (d.p.)slalib
dtp2v - convert tangent plane coordinates to direction cosines (d.p.)slalib
dtps2c - compute the spherical coordinates of the tangent point (d.p.)slalib
dtpv2c - compute the direction cosines of the tangent point (d.p.)slalib
dtt - compute the difference between TT and UTC in secondsslalib
dunlearn - Resets all task parameters to default values.dither
dv2tp - convert direction cosines to tangent plane coordinates (d.p)slalib
dvn - normalize a 3-vector and compute the modulus (d.p.)slalib
e2h - convert hour angle and declination to azimuth and elevation (d.p.)slalib
earth - compute approximate heliocentric position/velocity of earthslalib
ecd2pros - copy/convert FITS files from Einstein CD-ROM archiveeincdrom
ecdel - Delete an entire class of FITS extensions from a FITS file.mstools
ecdinfo - get information about a specific Einstein dataseteincdrom
ecextract - Select all extensions of one selected 'type' from a FITS filemstools
echelle - Echelle spectral reductions (slit and FOE)imred
echplot - Generate and plot IGI scripts for extracted spectral orders.stis
echscript - Generate an IGI script for selected extracted spectral orders.stis
echspec - Reduction Manual for Echelle Datamanuals
ecidentify - Identify features in spectrum for dispersion solutionechelle
ecleq - convert from ecliptic to equatorial FK5 coordinatesslalib
ecmat - compute the equatorial FK5 to ecliptic coordinates rotation matrixslalib
ecor - compute rv of earth and time correction to sun in given directionslalib
ecreidentify - Automatically identify features in spectraechelle
edge - 2-D image edge massaging.playpen
edit - Edit a text filelanguage
editor - Help page for use of the VI editormanuals
efits2qp - task to convert Einstein FITS files to PROS QPOE formatxdataio
eg50 - convert equatorial FK4 to IAU 1958 galactic coordinatesslalib
eheader - Interactively edit an image header.headers
ehistory - Edit history file to re-execute commandslanguage
ehistory - VII.G Using the EHISTORY and EPARAM commands (appendix)index
eincdpar - eincdrom package parameter pseteincdrom
eincdrom - tasks to access data from Einstein CDROMsxdataio
eindatademo - demonstration of Einstein IPC unscreened dataeincdrom
eintools - tools for creating Einstein exposure and background mapsxspatial
el2ue - convert osculating orbital elements into universal formslalib
elapert - Create polygon files for use in APPHOT polygonal photometry.sobsolete
emacs - VII.I Using the Computers at CTIO (appendix)index
emmethod - Compute linear regression coeff for a normal distribution ofstatistics
emulator - VII.D Using a PC at CTIO (appendix)index
encounts - Compute encircled energy (counts) for star images.foccs
eng2tab - Extract various information from SHP, UDL, etc.ctools
engextr - Extract info. from WF/PC engineering data (.X0H and .X0D) files.wfpc
entab - Replace blanks with tabs and blanksutilities
envget - Get the string value of an environment variablelanguage
envget[bis] - Get a boolean, integer, or string valued environment variableetc
environment - I.3 A Quick View of IRAF (irafintro)index
eparam - Edit parameters of a tasklanguage
eparam - I.3 A Quick View of IRAF (irafintro)index
eparam - VII.G Using the EHISTORY and EPARAM commands (appendix)index
epb - convert an MJD to a Besselian epochslalib
epb2d - convert a Besselian epoch to an MJDslalib
epco - convert a Besselian/Julian epoch to match a given epochslalib
ephem - Ephemeris tables and velocity corrections (jp)grasp
epheminterp - Interpolate Ephermis for B0, L0, P_ANGLE & SEMIDIAM.ephem
ephgeo - Interpolate a Solar Ephemeris Table.ephem
ephmvc - Determine and apply ephemeris velocity correctionsgongcor
ephvel - Calculate Ephemeris Velocity Corrections.ephem
epix - Edit pixels in an imageproto
epj - convert an MJD to a Julian epochslalib
epj2d - convert a Julian epoch to an MJDslalib
epoch - Convert between different time formats.tools
eprintf - Formatted print to STDERRfmtio
eqecl - convert equatorial FK5 to ecliptic coordinatesslalib
eqeqx - compute the equation of the equinoxesslalib
eqgal - convert equatorial FK5 to IAU 1958 galactic coordinatesslalib
eqwidths - Compute equivalent widthsctio
eqxy - Get (x,y) from a table of (ra,dec) given the pltsol coeff.gasp
erase - Erase an image frameiis
erract - Take an error action for a previously posted erroretc
errcreate - Calculate the PROS error array(square of errors) from an imagexspatial
errmsg - Find the IRAF system error code that matches a patternnlocal
error - Post an error and take an error actionetc
error - Print error code and message and abortlanguage
errorpars - Pset with error-related parameters.fitting
errors - I.8 Common Problems: Their Cause and Cure (irafintro)index
etc - Miscellaneous system proceduressys
euler - convert Euler angles to a rotation matrix (s.p.)slalib
evalfit - Compute the standard indices by evaluating the fitphotcal
evalfit - Compute the standard indices by evaluating the fitxphotcal
evaluate - evaluate photometry and astrometry of objects in a catalogifocas
evalvg - Compute the earth-sun-target & sun-earth-sat angles from ephemeris dataxproto
evp - compute the barycentric/heliocentric velocity/position of earthslalib
exabyte - I.8 Common Problems: Their Cause and Cure (irafintro)index
exabyte - VII.I Using the Computers at CTIO (appendix)index
examples - Print online examples of how to use the named task(s).stsdas
exp_make - script to create exposure map from QPOE fileeintools
expand - Expand polynomial functions into imagesmodel
explain_detect - describes tasks and algorithms used in the detect packagedetect
explain_errors - description of PROS error computations for lowxray
explain_screen - description of PROS support for temporal screeningxray
explain_xdata - description of new RDF file formatsxray
export - Convert IRAF images to some other formatdataio
exposure - description of PROS exposure correction supportxray
express - Evaluate/validate all constraint expressions in a dbaspec
expsf - extract the PSF description from a catalogifocas
extdel - Delete single extensions from a FITS file.mstools
extensions - description of conventions for PROS file extensionsxray
extgst - Extract selected columns stars from a list of tables.gasp
extinct - Use BSWITCH for extinction correctioniids
extinct - Use BSWITCH for extinction correctionirs
extinction - Apply atmospheric extinction corrections to images (obsolete)longslit
extras - Information about the extra information in 3D imagesapextract
extrema - Find extrema in x and y data pointsxtools
exuse - Help page for using the Exabyte Drivesmanuals
f2dhisto - Make a 2-D histogram from 2 columns in a tablefimage
fabry - Notes on the Fabry-Perot reduction packagefabry
factor - Display prime factors of a number.fourier
fadapt - Convolve a FITS image with an adaptive top hat filterfimage
faint - Convert ASCA faint mode data to a bright mode formatasca
faintdfe - Calculate the dark frame error for SIS FAINT mode data ***asca
fakelc - Creates a fake light curve having a constant mean intensity.xte
falloc - Preallocate (uninitialized) storage for a filefio
fappend - Append a FITS extension onto another FITS filefutils
faradius - Compute average radius of autocorrelation of star images.foccs
farith - Perform arithmetic on 2 FITS imagesfimage
fboxcar - Convolve a FITS image with a rectangular boxcar filterfimage
fcalc - Calculates values for a column using an arithmetic expressionfutils
fcarith - Perform arithmetic on FITS image with a constantfimage
fcatdiff - Compares columns of a fits file and reports row differencesfutils
fceval - Evaluate coordinates using the FITSCOORDS solutionslongslit
fconvolve - Convolve two images.fourier
fcreate - Create a FITS table from ASCII input filesfutils
fcurve - Make a light curve histogram from a column in a tablefutils
fdevbf - Install a new binary device in the FIO device tablefio
fdevtx - Install a new text device in the FIO device tablefio
fdump - Dump contents of a FITS table to an ASCII filefutils
fesdb2rdf - Reads i/p QVP and EXP (optional) data files and writes angro
fevpbtoa - Converts Fits formatted Comptel EVP data to an ASCII file.gro
fextract - Copy a FITS extension from a file into a new filefutils
fextract - Extract regions around stars in a focus image.foccs
fflincorr - Correct an FOC image for flat-field saturation.focphot
fft - FFT an IRAF image.grtools
fft - compute fast fourier transform on table or qpoe dataxtiming
fft1d - One dimensional FFTctio
fftplot - plot a fft table (output of fft)xtiming
fgauss - Convolve a FITS image with an elliptical Gaussian functionfimage
fgauss - Fit a Gaussian to output from 'fsquares' to find focus.foccs
fgread - Read a MEF file with FOREIGN extensionsfitsutil
fgwrite - Create a MEF file with FOREIGN extensionsfitsutil
fhisto - Make a histogram of a column in a tablefutils
fibinfo - Get some information about particular fibreswyffos
file_compare - comparison of new/RDF formats to OLD formats in PROSxray
files - Expand a file template into a list of filessystem
files - I.6 Tutorial #3 Handling Images (irafintro)index
fill - Baade-Lucy background "filling" algorithm.playpen
fillin - Fill in a missing image using linear interpolationgongcor
filt_corr - filter correction for power seriesmerge
filt_map - perform image registration, temporal filtering and masking (SRCstream)suntrans
filter - description of filtering options in PROSxray
filter_file - description of filter file for filt_corr (help file only)merge
filter_file - description of running mean filter filesuntrans
filterpars - Pset for setting filter parameters used in the wiener task.restore
filterphot - Transform flux measurement to standard photometric system.timeseries
filtpars - Edit the filter function parametersrv
fim2lst - Convert a 2D image to a pixel list (inverse of f2dhisto)fimage
fimconcat - Take 2 images and place them side by side as single imagefimage
fimgbin - Rebin a FITS image using a rectangular bin sizefimage
fimgdmp - Dump contents of a FITS image to an ASCII filefimage
find - Locate a spectrum on a framesam
finder - Load the prototype finder plate solver packagenlocal
findex - Create an index file for a FITS table columnfutils
findfiles - Find files recusively through directoriesctio
findfits - Archive the images in a directory tree to a FITS tapenlocal
findgain - Estimate the gain and readnoise of a CCDobsutil
findpars - Edit the star detection parametersapphot
findpars - Edit the star detection parametersdaophot
findpks - Locate the pinhole mask peaks on a matrix mask frametaucal
findshutcorr - Measure the shutter correction for a CCD cameranlocal
findsky - Determine the sky levels in a cubefabry
findstars - algorithm to automatically find starsifocas
findthresh - Estimate a CCD's sky noise from the gain and readnoisenproto
finfo - Get directory information for a filefio
fit - Find best-fit model values using a simplex minimization.xspectral
fit1d - Fit a function to image lines or columnsimfit
fit2d - 2D, weighted, polynomial fitgongcor
fitband - Fit a passband model to data using Amoeba simplex method.synphot
fitcoords - Fit user coordinates to image coordinateslongslit
fitgrid - Fit a spectrum model to a grid of spectral data.synphot
fitize - Convert all images in current directory to FITS filesmtools
fitoffsety - Correct dispersion coeff. for wavelength offsets.fos
fitparams - Compute the parameters of the transformation equationsphotcal
fitparams - Compute the parameters of the transformation equationsxphotcal
fitpars - Pset for specifying the fit algorithm, convergence criteria, etc.aspec
fitprofs - Fit gaussian profilesonedspec
fitprofs - Fit gaussian profilesspecred
fitpsf - Model the stellar psf with an analytic functionapphot
fitrad - Fit a function to circular image subrastersctio
fitring - Perform least squares fit to ring datafabry
fits2bin - task to install spectral calibration files from fitsxinstall
fits2ephem - task to install scc_to_utc & jdleap calibration filesxinstall
fits2qp - convert from FITS TABLE format to PROS QPOE formatxdataio
fits2snr - task to install xdemo filesxinstall
fitscopy - Copy FITS files: disk <--> tape and disk <--> diskfitsio
fitsky - Compute sky values in a list of annular or circular regionsapphot
fitskypars - Edit the sky fitting algorithm parametersdaophot
fitskypars - Edit the sky fitting parametersapphot
fitslogr - Make a log of certain header parameters from a FITS tape.vtel
fitslogr - Make a log of certain header parameters from a FITS tape.vtelold
fitspec - Fit a spectrum model to data using Amoeba simplex method.synphot
fitsread - Read compressed FITS filecompression
fitswrite - Write compressed FITS filecompression
fitting - Curve fitting tools.analysis
fitxy - Compute four-parameter linear fit to X,Y vs V2,V3.focgeom
fitxy - fit a linear model to 2 sets of [x,y] coordinatesslalib
fixdiodes - Fix spectra affected by dead or noisy diodes.sobsolete
fixicm - Fix an image to be sent to the Celcosobsolete
fixnoisex - Create a fixed-pattern noise image.focphot
fixpix - Fix bad pixels by linear interpolation from nearby pixelsproto
fixpix - Fix pixels defined by a pixel masknmisc
fixsaoreg - Convert an SAOIMAGE region file to PROS physical coordsxspatial
fixtail - Fix last image lines or columnsctio
fk425 - convert equatorial FK4 to FK5 coordinatesslalib
fk45z - convert equatorial FK4 to FK5 coordinates excluding proper motionslalib
fk524 - convert equatorial FK5 to FK4 coordinatesslalib
fk52h - convert equatorial FK5 to ICRS coordinatesslalib
fk54z - convert equatorial FK5 to FK4 coordinates excluding proper motionslalib
fk5hz - Convert equatorial FK5 to ICRS coordinates (0 ICRS proper motions)slalib
fkeyprint - Display keyword(s) in FITS header(s)futils
fkeytab - Copy a FITS header keyword to a FITS table elementfutils
flagflat - Flag WF/PC flat field pixels which are abnormally high or loww_calib
flamingos - Reduction tasks for Flamingos-I datagemini
flamingosinfo - General help and information on reduction of Flamingos dataflamingos
flat1d - Make flat field by fitting a 1D func. to the lines or columnsgeneric
flatcombine - Combine and process flat field imagesccdred
flatcombine - Combine and process flat field imagesquad
flatcombine - Combine and process flat field imagesquadred
flatcombine - Combine and process flat field imagesxccdred
flatcombine - Combine and process mosaic flat field exposuresmscred
flatcombine - Combine and process mosaic flat field exposuresmscred
flatcombine - Combine and process mosaic flat field exposuresmultampccd
flatcombine - Combine and process mosaic flat field exposuresmultampccd
flatfield - Compute flat field response.y_calib
flatfields - Discussion of CCD flat field calibrationsccdred
flatfields - Discussion of CCD flat field calibrationsquad
flatfields - Discussion of CCD flat field calibrationsquadred
flatfields - Discussion of CCD flat field calibrationsxccdred
flatfit - Sum and normalize flat field spectraiids
flatfit - Sum and normalize flat field spectrairs
flats - make a series of flat observationsccdacq
flatten - Flatten images using a flat fieldgeneric
flatten - Flatten images using a flat fieldirred
flborder - Replace border by extrapolating from nearest pixel.foccs
flcol - List column information in a FITS table extensionfutils
flcorner - Replace corner of f/48 internal flat with external flat.foccs
fldplot - plot a fld table (output of fold)xtiming
flex - Calibrate HSP optical bench flexure as functionshsp
flist - List contents of a FITS table to an ASCII filefutils
flnorm - Normalize a flat field by dividing by average of middle region.foccs
flookup - Filter a FITS file from selection based on a lookup tablefutils
florentz - Convolve a FITS image with an elliptical Lorentzian functionfimage
flotin - convert a character string to a floating point numberslalib
flprcache - Flush the process cachelanguage
fltime - Filter an event list within given time intervals (GTIs)time
fltstrm - filter values in an input text streamifocas
flush - Flush any buffered output to a filefio
fluxcalib - Apply flux calibration to images (obsolete)longslit
fluxcols - Pset for line flux column namesnebular
flvmask - Apply a mask table to interpolate along vertical lines.foccs
fmaskfilt - Filter an event list based on an input mask imagefimage
fmedian - Quantize and box median filter a list of 1D or 2D imagesimfilter
fmerge - Merge rows from several FITS tables into one FITS tablefutils
fmode - Quantize and box modal filter a list of 1D or 2D imagesimfilter
fmodhead - Modify the header keywords in a FITS filefutils
fndlmb - Determine the figure of the limb of the solar imagegongcor
fnextn - Extract the extension field of a filenamefio
fnldir - Extract the logical directory field of a filenamefio
fnroot - Extract the root field of a filenamefio
fntcls - Close unbuffered listfio
fntclsb - Close buffered listfio
fntgfn - Get next filename from unbuffered listfio
fntgfnb - Get next filename from buffered listfio
fntlenb - Get number of filenames in a buffered listfio
fntopn - Open an unbuffered filename listfio
fntopnb - Expand template and open a buffered filename listfio
fntrewb - Rewind the listfio
foc - Tasks for calibrating FOC data.hst_calib
focas - Faint object classification and analysis packagenoao
focas - Load the focas packagenlocal
focusv - Determine electronic focus calibration.hsp
fold - fold time data on a period and compute statisticsxtiming
fopnbf - Open a binary file on a special devicefio
fopntx - Open a text file on a special devicefio
format - Format the standard input and pass it to the standard outputmtools
formatdepx - Create a format-dependent nonuniformity image.focphot
forward - Compute forward Fourier transform of an image.fourier
fos - Tasks for calibrating FOS data.hst_calib
fos1 - FOS1 data reductionspec1
fos2 - FOS2 data reductionspec1
fos2 - Quick-look FOS2 data reductionquickie
foswcorr - Correct calibrated wavelengths (BLUE) for systematic shifts.fos
fourier - Fourier analysis.analysis
fowner - Get the name of the owner of a filefio
fparse - Parse file specifications and leave results in parameters.tools
fpartab - Copy a parameter value to a FITS table elementfutils
fpathname - Get the full pathname of a filefio
fplot - Plot columns in a FITS file using QDP/PLT package ***futils
fprepare - Convert Flamingos data to MEF; attach VAR and DQ extensionsflamingos
fprintf - Formatted print to any filefmtio
freq - Calculate guess frequency given n,l,m.grtools
freq2pix - Determine pixel value for a frequency in GPS or LNU image.grtools
frmedian - Quantize and ring median filter a list of 1D or 2D imagesimfilter
frmode - Quantize and ring modal filter a list of 1D or 2D imagesimfilter
frompolar - Convert amplitude & phase to real & imaginary parts.fourier
frozen - I.8 Common Problems: Their Cause and Cure (irafintro)index
fsaoi - Translate an SAOImage region file to an input file for fselectfimage
fscan - Scan a filefmtio
fselect - Create a new table from selected rows of a tablefutils
fseti - Set an integer FIO parameterfio
fsort - Sort a FITS table in placefutils
fsquares - Compute sum-of-squares sharpness criterion.foccs
fstati - Get the value of an integer FIO parameterfio
fstatistic - Calculate mean, standard deviation, min, and max for a columnfutils
fstatl - Get the value of a long integer FIO parameterfio
fstats - Get the value of a string valued FIO parameterfio
fstruct - List a description of the structure of a FITS filefutils
ftabcopy - Copy specified columns of a FITS table to a new tablefutils
ftabkey - Copy a FITS table element to a FITS header keywordfutils
ftabpar - Copy a FITS table element to a parameter valuefutils
ftp - VII.I Using the Computers at CTIO (appendix)index
ftplot - View 4-way data and FTs.sobsolete
ftpplot - plot a ftp table (output of fft)xtiming
fts - Fourier Transform Spectrometer reductions, analysis, and dbnso
function - Generate functions as images, tables or lists.fitting
futils - General FITS data manipulations packageftools
fvec2img - Create an image from a column of vectorsfimage
fverify - Verify that a FITS file conforms to the FITS Standardfutils
fweight - Compute weights using smoothed flux data, for use with splice.ctools
fwplot - Plot calibrated flux versus wavelength.ctools
fxcopy - Copy FITS files or FITS extension to an output FITS filefitsutil
fxcor - Radial velocities via Fourier cross correlationrv
fxdelete - Delete FITS extensions in placefitsutil
fxdummyh - Create a dataless single FITS filefitsutil
fxheader - List one line of header description per FITS unitfitsutil
fxinsert - Insert FITS files or extensions into another MEF filefitsutil
fxplf - Converts a pixel list file into a BINTABLE extensionfitsutil
fxsplit - Split a multiple extension FITS file into single FITS filesfitsutil
gainfac - Calculate analog gain factors.hsp
gainmeasure - Measure gains in quadformat imagesquadred
galactic - Convert ra, dec to galactic coordinatesastutil
galeq - convert IAU 1958 galactic to equatorial FK5 coordinatesslalib
gallist - Make an artificial galaxies listartdata
galprofpars - Pset with parameters for galaxy profile function.fitting
galsup - convert IAU 1958 galactic to deVaucouleurs supergalactic coordinatesslalib
games - VII.I Using the Computers at CTIO (appendix)index
gapfill - Fill gaps in GONG time series.grtools
garg[bcsilrdx] - Get scan argumentfmtio
gargrad - Get scan argument in any numerical radixfmtio
gargstr - Get scan argument of type stringfmtio
gargtok - Get scan argument of type tokenfmtio
gargwrd - Get scan argument of type wordfmtio
gasp - Access the HST Guide Star Catalog on CD-ROM.analysis
gauss - Convolve a list of 1 or 2-D images with an elliptical Gaussianimfilter
gaussfit - Least squares and robust estimation program.contrib
gausspars - Pset with parameters for Gaussians function.fitting
gbias - Process and combine GMOS bias imagesgmos
gcombine - Combine a set of GEIS images into one imageimgtools
gcopy - Generic multi-group copy utility.imgtools
gctod - General character to doublefmtio
gctol - General character to long (any radix)fmtio
gdevices - List available imaging or other graphics devicesplot
ge50 - convert IAU 1958 galactic to equatorial FK4 coordinatesslalib
geis - Provide background information about GEIS format filesfitsio
gemarith - Generic arithmetic on MEF images or spectragemtools
gemcombine - Combine MEF filesgemtools
gemhedit - Add header keyword, value and commentgemtools
gemoffsetlist - List processing for offsets (normally not used by the user)gemtools
gemqa - Gemini data quality assessmentgemtools
gemseeing - Determine the image quality for imaging datagemtools
gemtools - Generic tools developed for Gemini observationsgemini
gemvsample - Verify sky sample (hidden task)gemtools
gencal - generates synthetic calibration image from polynomialvelcal
generic - Generic image reductions toolsimred
generic - Preprocess a generic source filesoftools
genvim - Generate velocity, intensity, and modulation imagesmodel
genwave - Interactively generate a wavelength set.synphot
geoc - convert geodetic to geocentric positionslalib
geom - A more robust fndlmb programgongcor
geomap - Compute geometric transforms using matched coordinate listsimmatch
geotran - Transform 1-D or 2-D images using various mappinng transformsimmatch
geoxytran - Transform coordinate lists using the geomap transformsimmatch
get_global - Extract the value of a parameter for all components in a dbaspec
getc - Get the next character from a filefio
getcal - calculates the wide-band and narrow-band correction imagesvelcal
getcal - Populate a pset with calibration parameter values.ctools
getdatatype - Convert type suffix character to TY_ type codextools
getimage - get an image from the CD-ROM all sky surveygasp
getline - Get the next line from a text filefio
getpds - Transfer pds files with TFTPnlocal
getpix - VII.I Using the Computers at CTIO (appendix)index
getsqib - Extract the squibby brightness image from a full disk scan.vtel
getsqib - Extract the squibby brightness image from a full disk scan.vtelold
getuid - Get the name of the runtime user of a programetc
gevt2rdf - Converts a German _events dataset to RDF _bas formatrosat
gextverify - Verify extension input (hidden task)gemtools
gfapsum - Combine GMOS IFU spectra over a spatial regiongmos
gfcube - Resample extracted IFU spectra onto an x-y-lambda datacubegmos
gfdisplay - Reconstruct, display and analyse extracted GMOS IFU spectragmos
gfextract - Extract GMOS IFU spectra with optional correction forgmos
gfit1d - Interactive 1-d linear curve fit to images, tables or lists.fitting
gflush - Flush any buffered graphics outputlanguage
gfquick - Quick reconstruction of GMOS IFU images of acquisitiongmos
gfreduce - Apply processing steps to GMOS IFU datagmos
gfresponse - Derive relative fiber throughputs for the GMOS IFUgmos
gftoxdim - Convert a GEIS file to one with xtra dimension plus a tablefitsio
gftransform - Wavelength calibrate GMOS IFU spectragmos
ggain - Correct gain and read-noise for GMOS images (hidden task)gmos
ghkdump - Display GIS housekeeping parameters of the GIS HK fileasca
giflat - Derive flat field for GMOS images (IMAGING mode only)gmos
gimpcor - Show magnitude of the calfos gimp correction.fos
gimverify - Verify input/output image names (hidden task)gemtools
gireduce - Reduce images from GMOS (overscan, trim, bias, dark, flat)gmos
gisrti - Compute Rise Time Invariant value in GIS PH mode science fileasca
gki2cad - Convert GKI metacode files into autoCAD DXF filesctio
gki2mng - Convert a GKI metacode file to MONGO inputmtools
gkidecode - Decode metacode on the standard outputplot
gkidir - Directory listing of metacode fileplot
gkiextract - Extract individual frames from metacode fileplot
gkimosaic - Condense metacode frames to fit on one pageplot
gltoc - General long to character (any radix)fmtio
gmos - Reduction tasks for GMOS datagemini
gmosaic - Mosaic the 3 GMOS CCDs into one imagegmos
gmosexamples - Print reduction examples to the screengmos
gmosinfo - Generic tasks and general information about GMOSgmos
gmosinfoifu - Reduction of IFU data from GMOSgmos
gmosinfoimag - Reduction of imaging data from GMOSgmos
gmosinfospec - Reduction of longslit and MOS data from GMOSgmos
gmst - convert from UT1 to GMSTslalib
gmsta - convert from UT1 to GMST while minimizing rounding errorsslalib
gnsskysub - Nod-and-Shuffle shift and sky-subtraction of GMOS spectragmos
gongcor - GONG instrument and atmosphere corrections (jp)grasp
gpflat - Flat field GONG+ intensity imagesgongcor
gprep - Transform shifts for one WFPC2 chip into parameters for mosaicing all four chips.dither
gprepare - Prepare raw GMOS data for reductionsgmos
gqaplot - ASCA GIS quick analysis ftool ***asca
gradient - Convolve a list of 1 or 2-D images with a gradient operatorimfilter
grafcheck - Check an instrument graph table for bad rows.synphot
graflist - List the components downstream from a given component.synphot
grafpath - Print keywords and component names for a path throughsynphot
grafplot - Plot the components downstream from a given component.sobsolete
grafplot - Plot the components downstream from a given component.synphot
graph - Graph one or more image sections or listsplot
gratings - Compute and print grating parametersastutil
gregister - Register 1-D or 2-D images using the geomap transformsimmatch
grflat - Flat field intensity imagesgongcor
grhistory - Write GRASP history into image header (ea)grasp
grid - Create a grid to take frame distortion into account.taucal
grid_file - description of grid and trimming limits filesuntrans
grid_plot - Plot the chisquared grid with contour lines.xspectral
gripes - Send suggestions, complaints, etc. to the systemsystem
grlist - Parse a group format image section.stplot
gro - Compton Gamma Ray Observatory specific packageftools
growthcurve - Correct magnitudes using the growth curve for themctio
grppha - Manipulates OGIP standard PHA FITS fileheasarc
grspec - Interactively plot several images from a group format file.stplot
grtools - GONG Image and Spectral Analysis tools (ea)grasp
gsacpts - Accumulate points into a data setgsurfit
gsappwave - Add approximate wavelength calibration to the headers ofgmos
gscalibrate - Apply flux calibration and extinction correction togmos
gscoeff - Get coefficientsgsurfit
gscopy - Copy one surface to anothergsurfit
gscrmask - Make mask file for gscrrej (hidden task)gmos
gscrrej - Clean spectroscopic data for cosmic ray hitsgmos
gscut - Cut GMOS MOS spectra into 2D piecesgmos
gsetsec - Update datasec header keyword (hidden task)gemtools
gsextract - Extract GMOS MOS or longslit spectra to 1Dgmos
gsflat - Derive flat field for GMOS spectra based on GCAL lamp exposuresgmos
gsfree - Free space allocated by gsinitgsurfit
gsinit - Make ready to fit a surface; set up parameters of fitgsurfit
gsreduce - Reduce spectra from GMOS (overscan, trim, bias, dark, mosaic,gmos
gsrestore - Restore surface parameters and coefficientsgsurfit
gssave - Save surface parameters and coefficientsgsurfit
gsskysub - Skysubtract GMOS spectra (longslit or MOS)gmos
gsstandard - Establish spectrophotometric calibration for GMOS spectragmos
gsstati - Get integer parametergsurfit
gssub - Subtract one surface from anothergsurfit
gstatistics - Compute and print image pixel statistics for all groups.imgtools
gstransform - Rectify and/or wavelength calibrate GMOS spectragmos
gstrcat - String concatenation returning length of output stringfmtio
gstrcpy - String copy returning length of output stringfmtio
gstrdetab - Remove tabs from a stringxtools
gstrentab - Put tabs in a string where possiblextools
gstrsettab - Set tab stops for gstrdetab, entab.xtools
gsurfit - IRAF general surface fitting packagemath
gsvector - Evaluate surface at an array of x and ygsurfit
gswavelength - Establish wavelength calibration for GMOS spectragmos
gszero - Zero arrays for new fitgsurfit
guesspar - Estimate freq., FWHM & amplitude of a mode given n,l,m.grtools
guide - Guide to using DIMSUM with the REDUCE taskdimsum
guide - Guide to using xdimsum with the xmosaic taskxdimsum
guide - Guide to using xdimsum with the xmosaic taskxirred
guide - Introductory guide to using the CCDRED packageccdred
guide - Introductory guide to using the CCDRED packagequad
guide - Introductory guide to using the CCDRED packagequadred
guide - Introductory guide to using the CCDRED packagexccdred
h2e - convert azimuth and elevation to hour angle and declination (s.p.)slalib
h2fk5 - Convert equatorial ICRS to FK5 coordinatesslalib
hafton - Generate half-tone plots of an imageplot
hangs - I.8 Common Problems: Their Cause and Cure (irafintro)index
hdbexamine - Examine a help databasesoftools
hdfit - Fit a curve to density, log exposure valuesdtoi
hdiff - Display the differences between two image headers.headers
hdshift - Align related HD curvesdtoi
hdtoi - Apply DTOI transformation to density imagedtoi
head - Print the first few lines of a text filesystem
head_remake - remake image headers for different instrument's data (SRCsupport)suntrans
heasarc - High Energy/Astro-D Mission data manipulation packageftools
helio - Compute heliocentric Julian datectio
helio_image - description of images on a heliographic coordinate system.suntrans
help - I.4 Tutorial #1 IRAF Structure (irafintro)index
help - I.6 Tutorial #3 Handling Images (irafintro)index
help - Print online documentationsystem
hfilter - Adaptive low-pass filter based on H-transform.restore
hfix - Fix image headers with a user specified commandproto
hfk5z - Convert equatorial ICRS to FK5 coordinates (0 ICRS proper motions)slalib
hgeom - Determine figure of the limb using Hankel geometry routinegongcor
hidetask - Make a task invisible to the userlanguage
histed - Help page for the history and ehistory commandsmanuals
histogram - Plot or list the histogram of a table column, image, or list.stplot
histogram_file - description of histogram files (help file only-no task)suntrans
history - Display commands previously executedlanguage
hkexpand - Expand a compressed format housekeeping (HK) data fileheasarc
hkfilter - generate a QPOE time filter from an input housekeeping filterxdataio
hkscale - Scales a FITS housekeeping data file into physical valuesheasarc
hkunexpand - Compress an expanded format houskeeping (HK) data fileheasarc
hltorgb - Transform brightness and hue to red, green, and blue.sdisplay
hriexpmap - Creates exposure map for given ROSAT HRI observational datasetrosat
hrs - Tasks for calibrating HRS data.hst_calib
hselect - Select a subset of images satisfying a boolean expressionimutil
hstephem - Convert ST orbit ephemeris file to an STSDAS table.ctools
hstpos - Plot the position of HST on a map of the worldplaypen
hsubtract - Baade-Lucy background subtraction algorithm.playpen
htranslate -fts
hxflux - Calculates the flux and luminosity for a ROSAT HRI source.xspectral
hydra - KPNO HYDRA (and NESSIE) reduction packageimred
i2gaussfit - Iterative 2-d Gaussian fit to noisy images (script).fitting
i2sun - Convert IRAF images to Sun rasterfilesvol
icfit - Interactive curve fitting packagextools
icntr - Create center coordinate filefabry
idcombine - Create calibration darks using IR dark group filesxirred
identify - Identify arc lines and determine a dispersion functionctioslit
identify - Identify arc lines and determine a dispersion functionkpnocoude
identify - Identify arc lines and determine a dispersion functionkpnoslit
identify - Identify featureslongslit
identify - Identify features in spectrum for dispersion solutionargus
identify - Identify features in spectrum for dispersion solutionhydra
identify - Identify features in spectrum for dispersion solutioniids
identify - Identify features in spectrum for dispersion solutionirs
identify - Identify features in spectrum for dispersion solutiononedspec
identify - Identify features in spectrum for dispersion solutionspecred
idmeans - Do statistics for IR dark imagesxirred
ids - IDS data reductionspec1
ids - IDS data reductionspec2
ids - Quick-look IDS data reductionquickie
ieee - IEEE signal processing routinesmath
ifcombine - Create calibration flats using IR flat group filesxirred
ifgroup - Group dark and linearity corrected IR flat imagesxirred
iflatdiv - Flat field dark and linearity corrected IR imagesxirred
ifmeans - Do statistics for dark and linearity corrected IR flat imagesxirred
igi - Interactive Graphics Interpreter.stplot
igi - Interactive Graphics Interpreter.tbplot
iids - KPNO IIDS spectral reductionsimred
iii - transforms phase velocity, modulation amplitude, and meanvelcal
iiivim - Transform 3 phase intensity images togongcor
iis - IIS image display control packagetv
ilincor - Linearity correct dark corrected IR imagesxirred
illumination - Determine illumination calibrationctioslit
illumination - Determine illumination calibrationkpnocoude
illumination - Determine illumination calibrationkpnoslit
illumination - Determine illumination calibrationlongslit
illumination - Determine illumination calibrationspecred
ils - Iterative Least Squares image restoration.playpen
im2gki - Send an image to a IRAF GIO graphics device.sdisplay
im3dtran - 3d image transpose (used for rotates as well)vol
im3dtran - Transpose a list of 3-D imagesimgeom
im3dtrans - change the subscript ordering in the ttrans output filessuntrans
images - General image processing packageclpackage
images - I.6 Tutorial #3 Handling Images (irafintro)index
imagfe - Register using common features of image data.registration
imagree - Change header keywords to agree with the image name.sobsolete
imalign - Align and register 2-D images using a reference pixel listimmatch
imcalc - Perform general arithmetic operations on images.imgtools
imcctran - Transform image header from one celestial wcs to anotherimcoords
imcentroid - Compute and print relative shifts for a list of 2-D imagesimmatch
imcntr - Locate the center of a stellar imageproto
imcnts - count photons (with bkgd subtraction) in regionsxspatial
imcombine - Combine images pixel-by-pixel using various algorithmsimmatch
imcompress - Compress IRAF image pixel filecompression
imcompress - Compress an IRAF image by pixel summationximages
imcontour - display a contour map of an image using wcsxplot
imcoords - Image coordinates packageimages
imcopy - Copy an imageimutil
imcreate - Create an imagectio
imcreate - Create an image from a binary file or a constant valueximages
imdetect - determine rough positions of sources in the fieldxproto
imdisp - display pixel values in regionsxspatial
imdisp_pos - Determine image location in image display.sdisplay
imdivide - Image division with zero checking and rescalingimutil
imdkern - Image display device (IMD) graphics kernelplot
imedit - Examine and edit pixels in imagestv
imedit - VII.H Using IMEDIT to Fix Pixels (appendix)index
imexamine - Examine images using image display, graphics, and texttv
imexamine - I.7 Tutorial #5 Displaying Images (irafintro)index
imexpr - Evaluate a general image expressionimutil
imexpr - Image Expressions in the CLdoc
imextensions - Make a list of image extensionsproto
imextract - Extract a list of image sections from an imagectio
imextreme - Locates the maximum and minimum pixels in an image.dither
imfill - Set fill value in image according to a mask.imgtools
imfilter - Image filtering packageimages
imfit - Image fitting packageimages
imfunction - Apply a single argument function to a list of imagesimutil
img2us - Converts from German Image file format to US RFITS formatrosat
imgeom - Image geometric transformation packageimages
imgets - Return the value of an image header parameter as a stringimutil
imgscale - Calibrate aperture plate scale (location phase II).hsp
imheader - Print an image headerimutil
imhistogram - Compute and plot or print an image histogramimutil
iminfo - Print an instrument-specific header for a list of GEIS imagesheaders
iminsert - Insert an image into another by either adding,imgtools
imio - Introduction to IRAF Image I/Odoc
imjoin - Join images along a given dimensionimutil
imjoin - N-dimensional image join along arbitrary axisvol
imkbadpix - Create new bad pixel mask from calibration flatsxirred
imkdarks - Create calibration darks from raw IR darksxirred
imkeyname - Rename an image using a name from a header keyword.sobsolete
imkflats - Create calibration flats from raw IR flatsxirred
imlintran - Linearly transform a list of 2-D imagesimgeom
immatch - Image matching and combining packageimages
immatch - Match one or two dimensional imagesctio
immean - Compute mean of an image and save value as task parameter.playpen
imnode - Remove node information from a IRAF image pixfile pathnameximages
implot - I.7 Tutorial #4 Implot Task (irafintro)index
implot - Plot lines and columns of images using cursorsplot
import - Convert some other format to an IRAF imagedataio
imprnt - Print image pixel values or image statisticsgongcor
improj - perform rectangular projections on an imagexspatial
improject - Project image along one axis decreasing theimgtools
imred - Image reductions package [up]noao
imrename - Rename one or more imagesimutil
imreplace - Replace a range of pixel values with a constantimutil
imreplace - Replace pixels in a range by a constantmisc
imreplicate - Expand an IRAF image by pixel replicationximages
imscale - Scale an image to a specified (windowed) meanproto
imslice - Slice images into images of lower dimensionimutil
imsmooth - smooth an imagexspatial
imspace - Determine disk space used by IRAF imagesctio
imspec - Convert an image to a synphot spectrum or vice versa.synphot
imstack - Stack images into a single image of higher dimensionimutil
imstatistics - Compute and print statistics for a list of imagesimutil
imsum - Compute the sum, average, or median of a set of imagesimutil
imtab - Copy an image to a table column.ttools
imtest - Image headers and pixel files testctio
imtile - Tile same sized 2D images into a 2D mosaicimutil
imtitle - Change the title of an image (noao.proto V2.9)obsolete
imtranspose - Transpose a list of 2-D imagesimgeom
imuncompress - Uncompress IRAF image pixel filecompression
imverify - Verify that an image was copied correctly.sobsolete
imxv - apply a 3D reverse rotation to a 3-vector (s.p.)slalib
incidence - Calibrate incidence angle.z_calib
info - list catalog header informationifocas
infostis - Print information about STIS FITS files.stis
inlfit - Interactive non-linear least squares fitting packagextools
install - System Installation Guidedoc
instrpars - edit instrument parametersccdacq
instrument - access instrumentccdacq
instruments - Instrument specific data filesccdred
instruments - Instrument specific data filesquad
instruments - Instrument specific data filesquadred
instruments - Instrument specific data filesxccdred
int_qual - intensity quality assurance parameter calculationqasun
interf - Compute interferometer numerator, denominator, brightnessmodel
interp - Interpolate for a value in a table of X,Y pairsproto
interp - Old 1D image interpolation routinesmath
intin - convert a character string into an integerslalib
intrep - Find coordinates at the cursor.gasp
intrinsicspecplot - Plot the emitted and observed spectrumxspectral
intro - A brief introduction to IRAFlanguage
inttag - Convert an events table of TIMETAG into an integratedstis
intvel - Interactive average velocity evaluationfabry
inverse - Compute inverse Fourier transform of an image.fourier
invertfit - Compute the standard indices by inverting the fitphotcal
invertfit - Compute the standard indices by inverting the fitxphotcal
invf - invert the linear model computed from 2 sets of [x,y] coordinatesslalib
invmetric - Translate RA & Dec to WF/PC pixel coordinates with geometricwfpc
ionic - Determine ionic abundance relative to H+nebular
iraf2bin - Convert IRAF images into binary filesctio
irafil - Create an IRAF image from a binary data fileproto
irafintro - Manual Introduction and IRAF Tutorialsmanuals
irafpacks - IRAF Package Requirementsdoc
irafplan - IRAF Project Plandoc
iralign - Align the image produced by irmosaicirred
iralign - Align the mosaiced image produced by irmosaicnproto
irdlfcor - Dark subtract, linearity correct, and flat field IR imagesxirred
irlincor - Correct IR imager frames for non-linearityctio
irlincor - Correct IR imager frames for non-linearityirred
irlincor - Correct frames for non-linearityared
irman - Infrared Reduction Manual (in progress)manuals
irmatch1d - Align and intensity match image produced by irmosaic (1D)nproto
irmatch1d - Align and intensity match the image produced by irmosaic (1D)irred
irmatch2d - Align and intensity match image produced by irmosaic (2D)nproto
irmatch2d - Align and intensity match the image produced by irmosaic (2D)irred
irmfringe - Remove fringe pattern, possibly interactively, by scalingmscred
irmfringe - Remove fringe pattern, possibly interactively, by scalingmscred
irmosaic - Mosaic an ordered list of images onto a gridirred
irmosaic - Mosaic an ordered list of images onto a gridnproto
irmpupil - Remove pupil image, possibly interactively, by scalingmscred
irmpupil - Remove pupil image, possibly interactively, by scalingmscred
ironphot - Create a 2m ONIS IR standard star observations filexphotred
ironsets - Group 2m ONIS IR standard star images by filterxphotred
irred - KPNO IR camera reductionsimred
irs - KPNO IRS spectral reductionsimred
isaac - Interactive Spectral Analysis And Computation.fts
iscoeff - get coefficients of surfacesurfit
iseval - evaluate the surface at a pointsurfit
isgroup - Group one night's IR standard star observationsxirred
isinit - initialize surface descriptorsurfit
isis - ISIS data reductionspec1
isis - ISIS data reductionspec2
isis - Quick-look ISIS data reduction (either arm or both)quickie
iskymeans - Compute skymeans for a set of IR observationsxirred
islaccum - accumulate surface at a given line numbersurfit
islfit - fit the surface at a given line numbersurfit
islist - List the IR standard star processing informationxirred
islrefit - refit the surface at a given line number, same columnssurfit
islsolve - solve the surface at a given line numbersurfit
islzero - zero the fit for a given line numbersurfit
ismosaic - Reduce a single IR standard star observationxirred
isoexam - Plot ellipses on the image display (interactive).isophote
isomap - Plot ellipses superposed over image contours.isophote
isopall - Plot summary of all results from isophotal analysis.isophote
isophote - Elliptical isophote image analysis.analysis
isoplot - Plot results of isophotal analysis.isophote
isoreg - create region mask by applying intensity levels to image dataxspatial
isred - Reduce a single night of IR standard star observationsxirred
isresolve - resolve surface, same linessurfit
isshifts - Compute shifts for a single IR standard star observationxirred
itarr - Read a tar file and extract contentssomtlocal
itart - Read a tar file and list contentssomtlocal
iterstat - Compute image statistics using iterative rejectionxdimsum
iterstat - Compute image statistics using iterative rejectionxirred
iterstat - Iteratively compute and print image statisticsnicmos
itob - Convert integer to booleanetc
itoc - Integer to characterfmtio
jimage - Create a jitter image from U2,U3 coordinates in a table.playpen
jobs - Display status of background jobslanguage
jobs - I.3 A Quick View of IRAF (irafintro)index
joinlines - Join text files line by lineproto
keep - Make recent set, task, etc. declarations permanentlanguage
keypar - Copy an image or table header keyword to an IRAF parameter.ttools
keytab - Copy an image or table header keyword to a table element.ttools
keywpars - Translate the image header keywords used in ASTUTIL packageastutil
keywpars - Translate the image header keywords used in RV packagerv
ki - Kernel interface (networking)sys
kill - Kill a background joblanguage
kmestimate - Compute the Kaplan-Meier estimator of a randomly censoredstatistics
kolmov - Kolmogorov-Smirnov test for goodness of fit.statistics
kpnocoude - KPNO coude reduction package (slit and 3 fiber)imred
kpnofocus - Determine the best focus from KPNO focus imagesnmisc
kpnoslit - KPNO low/moderate dispersion slits (Goldcam, RCspec, Whitecam)imred
ksplot - plot observed & model cdf's and their differencextiming
lambda - List wavlength and pixel valuesctio
lan4mphot - Create a 4m MOSAIC Landolt standard star observations filexphotred
lan4msets - Group 4m MOSAIC Landolt standard star images by filterxphotred
language - The command language itselfclpackage
laplace - Laplacian filter a list of 1 or 2-D imagesimfilter
lat_sin - interpolate registered image onto a different lat-long grid (SRCsupport)suntrans
latex - VII.I Using the Computers at CTIO (appendix)index
lbmap - makes a local background mapdetect
lcalib - List calibration file dataiids
lcalib - List calibration file datairs
lcalib - List calibration file datalongslit
lcalib - List calibration file dataonedspec
lcase - Convert a file to lower caseutilities
lcode - Report statistics on SPP or Fortran programsnlocal
ldetect - 'canned' local detect taskdetect
ldumpf - List the permanent files on a Cyber DUMPF tapemtlocal
lexnum - Lexically analyze a string to determine if it is a numberfmtio
lgaperloc - Calibrate location of a large aperture (location phase III).hsp
lgrlist - Expand a list of images and group numbersplaypen
line_sel - Build a db of lines from a line listaspec
linebias - Fit and subtract an average line biasbias
lineclean - Replace deviant pixels in image linesimfit
linefind - Find spectral lines for wavelength calibration.y_calib
linelists - Description of the spectral line list library inonedspec
linenum - Prepend an integer to each line of a filenlocal
link - Help page for linking between computers at CTIOmanuals
linmatch - Match the linear intensity scales of 1-D or 2-D imagesimmatch
linpol - Calculate polarization frames and Stoke's parametersnproto
lintran - Linearly transform a coordinate listapphot
lintran - Perform linear transformation of a listlists
list_col - list collator for qa outputqasun
list_file - description of ts_merge input list (help file only-no task)merge
listarea - Print an area of an image.imgtools
listpixels - Convert an image section into a list of pixelsimutil
listprimes - Display first N prime numbers.fourier
lists - List processing packageclpackage
llsq - Lawson's & Hanson's linear least squares packagemath
lm_file - description of l-m pair file for extractsuntrans
lmap - Compute the photocathode mapping functionz_calib
lmatchsrc - match sources between and within different detect cell sizesdetect
lmbcor - Correct the figure of the limb of the solar imagegongcor
lmbsta - Calculate statistics for an elliptic data windowgongcor
lnudiagram - Produce an L-Nu diagram from power spectra.grtools
load - I.3 A Quick View of IRAF (irafintro)index
load - I.4 Tutorial #1 IRAF Structure (irafintro)index
logging - Discussion of CL logginglanguage
login - I.2 Login and logout (irafintro)index
login - VII.I Using the Computers at CTIO (appendix)index
logout - I.2 Login and logout (irafintro)index
logout - Log out of the CLlanguage
logout - VII.I Using the Computers at CTIO (appendix)index
logtex - Convert running log into a LaTeX filespec1
logtex - Convert running log into a LaTeX filespec2
longplot - Make a long, accurately scaled plotnlocal
longslit - Longslit Packagetwodspec
loop_blot - Runs blot for a given list of input and output images.dither
loop_driz - Runs drizzle for a list of input, output, and mask images.dither
lowpars - Pset for setting the low-pass filter parameters used in therestore
lparam - I.3 A Quick View of IRAF (irafintro)index
lparam - List the parameters of a tasklanguage
lpeaks - determine the rough source positions from a snrmapdetect
lpopen - Open the line printer as a fileetc
lprint - Print a file on the line printer devicesystem
lroff - Lroff (line-roff) text formattersoftools
ltcplot - plot a ltc table (output of ltcurv)xtiming
ltcurv - compute count rates of binned source and bkgdxtiming
ltoc - Long to characterfmtio
lucy - Deconvolve an image using Leon Lucy's algorithm.restore
lutreplace - Replace (short integer) pixel values from a lookup tablenlocal
m2av - convert a rotation matrix to an axial vector (s.p.)slalib
mag - Calculate magnetogramvelcal
magavg - Average output from MAGBAND for a single objectctio
magband - Compute the average magnitude for a list of bandpassesctio
magnify - Magnify a list of 1-D or 2-D imagesimgeom
magshiftfix - Mosaicing program using sub-pixel replication and maskingdimsum
mail - Help page for sending mail to the Statesmanuals
mail - VII.I Using the Computers at CTIO (appendix)index
main - The IRAF Mainetc
makehelium - Cl script for processing destreaked 10830 grams(second pass).vtel
makehelium - Cl script for processing destreaked 10830 grams(second pass).vtelold
makeimages - Cl script for processing magnetograms into projected mapsvtel
makeimages - Cl script for processing magnetograms into projected mapsvtelold
makemask - Make an object mask for a single imagexdimsum
makemask - Make an object mask for a single imagexirred
maketime - Calculate time intervals (GTIs) from housekeeping (HK) datatime
makevig - generate a vignetting mask file from calibration dataxspatial
makewcs - Write the WCS on the image header based on the plate sol.gasp
manuals - CTIO manualsctio
map - convert a post IAU 1976 mean to geocentric apparent placeslalib
mappa - precompute the set of mean to geocentric apparent place parametersslalib
mapqk - convert a post IAU 1976 mean to geocentric apparent placeslalib
mapqkz - convert a post IAU 1976 mean to geocentric apparent placeslalib
marfrmf - Multiplies an ancillary response file by a redist matrixcaltools
markdq - Mark DQ flags on a displayed image.nicmos
marx2qpoe - convert MARX EVENT FITS to QPOE filexproto
mask_head - Attach mask names to image headers; invert mask if requesteddither
maskalign - Take JLC-style input, derive alignment solution (superceded)ucsclris
maskdereg - Deregister master object mask to individual object masksxdimsum
maskdereg - Deregister master object mask to individual object masksxirred
maskdereg - Deregister master object mask to many masks for individual framesdimsum
maskdisk - mask image on a heliographic coordinate system with (SRCpiece)suntrans
maskfix - Fix bad pixel in images using a bad pixel maskxdimsum
maskfix - Fix bad pixel in images using a bad pixel maskxirred
maskstat - Compute mask statistics using iterative rejectionxdimsum
maskstat - Compute mask statistics using iterative rejectionxirred
match - Print all lines in a file that match a patternsystem
mathfcns - Mathematical routineslanguage
mathpha - Performs mathematical operations on PHA filesheasarc
matphot - CCD stellar photometric reduction using a MATPHOT PSF file.mxtools
matrix - How to make slides and photos with the matrix cameranlocal
mboxfind - Find box and star positions; putput in JLC form (superceded)ucsclris
mchmag - change magnitude zero points in matched catalogifocas
median - Median box filter a list of 1D or 2D imagesimfilter
mem - Deconvolve an image by the Maximum Entrophy Method (MEM).restore
memio - Memory i/o (dynamic memory allocation)sys
merge - Merge daily grams into a Carrington map.vtel
merge - Merge daily grams into a Carrington map.vtelold
mergecar - Merge and bin spectra from different carrousel positions.z_calib
metric - Translate WF/PC pixel coordinates to RA & Dec with geometricwfpc
mextract - extract a single catalog from a matched catalogifocas
mfit - Anitia's a-coefficient fitting routine.grtools
mgtime - Merge 2 or more time interval (GTI) filestime
midut - Compute UT at midpoint of observationctio
minfo - list matched catalog header informationifocas
minmax - Compute the minimum and maximum pixel values in an imageimutil
missions - list of missions and instruments support by PROSxray
mjoin - Join lines in text files by matching themctio
mk(n)obsfile - Prepare an oservations file from apphot/daophot outputphotcal
mk(n)obsfile - Prepare an oservations file from apphot/daophot outputxphotcal
mk2dspec - Make/add artificial 2D spectra using 1D spectra templatesartdata
mka2d - Create or modify an A-to-D correction reference file for WF/PC.w_calib
mkapfile - Prepare aperture corrections file from apphot/daophot outputphotcal
mkapfile - Prepare aperture corrections file from apphot/daophot outputxphotcal
mkcaldb - Create a Calibration Databasecaltools
mkcalinit - Create a caldbinit filecaltools
mkcatalog - Type in a standard star catalog or observations filephotcal
mkcatalog - Type in a standard star catalog or observations filexphotcal
mkconfig - Prepare a configuration filephotcal
mkconfig - Prepare a configuration filexphotcal
mkcube - Combine 2D images into a cubefabry
mkdark - Create a dark by combining images to get rid of cosmic rays.wfpc
mkdir - Create a new directorysystem
mkdtime - Calculates the deadtime fractions for the GISasca
mkechelle - Make artificial 1D and 2D echelle spectraartdata
mkerr - Make an error file for an input framesam
mkfringecor - Make fringe correction images from sky imagesccdred
mkfringecor - Make fringe correction images from sky imagesquad
mkfringecor - Make fringe correction images from sky imagesquadred
mkfringecor - Make fringe correction images from sky imagesxccdred
mkfringeflat - Matching fringes in STIS fringe flat to those in science data.stis
mkfunc - Create analytic form test data (image).sobsolete
mkgauss - Generate a 2-D image having an object of Gaussian type.imgtools
mkheader - Append/replace header parametersartdata
mkhistogram - List or plot the histogram of a data stream (noao.proto V2.9)obsolete
mkhkscr - generate a housekeeping (TSI) filterxdataio
mkillumcor - Make flat field illumination correction imagesccdred
mkillumcor - Make flat field illumination correction imagesquad
mkillumcor - Make flat field illumination correction imagesquadred
mkillumcor - Make flat field illumination correction imagesxccdred
mkillumflat - Make illumination corrected flat fieldsccdred
mkillumflat - Make illumination corrected flat fieldsquad
mkillumflat - Make illumination corrected flat fieldsquadred
mkillumflat - Make illumination corrected flat fieldsxccdred
mkimsets - Prepare an image set file for input to (mk)(n)obsfilephotcal
mkimsets - Prepare an image set file for input to (mk)(n)obsfilexphotcal
mklorentz - Make a smooth Lorentzian spectrum.grtools
mklut - Generate a lookup table for image display.sdisplay
mkmanpage - Make a manual pagesoftools
mkmask - Create the initial master object maskxdimsum
mkmask - Create the initial master object maskxirred
mkmnu - Make a smooth M-Nu spectrum.grtools
mkms - Create multispec from 1D spectra including associated bandsnproto
mkmsc - Make multiextension mosaic format from flat formatsmscred
mkmsc - Make multiextension mosaic format from flat formatsmscred
mkmultispec - Combine wavelength and data with the MULTISPEC MWCS.ctools
mknoise - Make/add noise and cosmic rays to 1D/2D imagesartdata
mkobjects - Make/add artificial stars and galaxies to 2D imagesartdata
mkpattern - Make/add patterns to imagesartdata
mkphotcors - Prepare the photometric corrections filesphotcal
mkphotcors - Prepare the photometric corrections filesxphotcal
mkphottb - Create a synthetic photometry lookup table for WF/PC.w_calib
mkpkg - Make or update an object library or packagesoftools
mkqsrc - Adds extra fields for quality screening to ROSAT source filerosat
mkscript - Make a command scriptsystem
mksens - Create a sensitivity filespec1
mksens - Create a sensitivity filespec2
mkshift - Make a script to shift images to common positionsfabry
mkskycor - Make sky illumination correction imagesccdred
mkskycor - Make sky illumination correction imagesquad
mkskycor - Make sky illumination correction imagesquadred
mkskycor - Make sky illumination correction imagesxccdred
mkspec - Make an artificial power spectrum [and time series].grtools
mkspec - Generate an artificial spectrumiids
mkspec - Generate an artificial spectrumirs
mkspec - Generate an artificial spectrum (obsolete)onedspec
mktags - Tag all procedure declarations in a set of filessoftools
mktemp - Make a temporary (unique) file namelanguage
mktemp - Make a unique temporary filenamefio
mkthru - Create a throughput table for installation in CDBSsynphot
mkttydata - Build cache for termcap/graphcap device entriessoftools
mkvmw - Make a window function image for a times series data set.grtools
mkwave - Make a time series of a sampled sine wave.grtools
mkweight - Make a simple weighting file for use in task specalign.ctools
mod_qual - modulation quality assurance parameter calculationqasun
modalid - Print the space craft modal configurationasca
modecoef_file - description of mode coefficient file (help file only-no task)suntrans
modediag - make separate real and imaginary mode coefficient files (SRCsupport)suntrans
model - Solar and Instrument modelling programs (jp)grasp
modelpars - Pset for setting model parameters used in the wiener task.restore
models_spectral - for information about spectral modelsxspectral
modeone - Restore and display mode I target acquisition images.sobsolete
mongo - VII.I Using the Computers at CTIO (appendix)index
monitor - Reduce particle monitor data obtained from HSP.hsp
monochrome - Select monochrome enhancementiis
moon - compute approximate geocentric position/velocity of moonslalib
mores - make a series of observations with current parametersccdacq
mosaic_display - Display many images in a single image display buffer.sdisplay
mosdisplay - Display a mosaic of MultiAccum image readouts.nicmos
mosproc - Prepare images for quick look mosaicingirred
mostools - Package for GMOS mask preparationgmos
moveheader - Combine the header and pixels from two images,imgtools
movie - Display successive planes from a 3d SLDCndprogs
mpeakfind - Find peaks in a power spectrum (user supplied guessing)grtools
mperfits - convert from MPE/MIDAS FITS IMAGE to IRAF image format w/ WCSxdataio
mrotlogr - Log some header parameters from a FITS rotation map tape.vtel
mrotlogr - Log some header parameters from a FITS rotation map tape.vtelold
msarith - Image arithmetic with NICMOS and STIS filesmstools
msbadpix - Detects bad pixels in STIS and NICMOS images.ctools
msbadpix - Detects bad pixels in STIS and NICMOS images.nicmos
mscan - Read all sector scans on a tape and put them into images.vtel
mscan - Read all sector scans on a tape and put them into images.vtelold
mscblkavg - Block average mosaic exposures with header keyword updatingmscred
mscblkavg - Block average mosaic exposures with header keyword updatingmscred
mscblkavg - Block average mosaic exposures with header keyword updatingmultampccd
mscblkavg - Block average mosaic exposures with header keyword updatingmultampccd
msccmatch - Match coordinates from list by adjusting WCSmscred
msccmatch - Match coordinates from list by adjusting WCSmscred
msccmd - Execute general command with image extension expansionmscred
msccmd - Execute general command with image extension expansionmscred
msccmd - Execute general command with image extension expansionmultampccd
msccmd - Execute general command with image extension expansionmultampccd
mscctran - Celestial coordinate transformation using plate solutionmscred
mscctran - Celestial coordinate transformation using plate solutionmscred
mscdisplay - Display mosaic exposures in single framesmscred
mscdisplay - Display mosaic exposures in single framesmscred
mscdisplay - Display mosaic exposures in single framesmultampccd
mscdisplay - Display mosaic exposures in single framesmultampccd
mscexamine - Examine mosaic exposures displayed as single framesmscred
mscexamine - Examine mosaic exposures displayed as single framesmscred
mscexamine - Examine mosaic exposures displayed as single framesmultampccd
mscexamine - Examine mosaic exposures displayed as single framesmultampccd
mscfinder - Package to do astrometry on mosaic datamscred
mscfinder - Package to do astrometry on mosaic datamscred
mscfindgain - Calculate the gain and readout noise of a mosaic of CCDmscred
mscfindgain - Calculate the gain and readout noise of a mosaic of CCDmscred
mscgetcatalog - Get coordinates from a Web server covering mosaic exposuresmscred
mscgetcatalog - Get coordinates from a Web server covering mosaic exposuresmscred
mscguide - Introductory guide to using the MSCRED packagemscred
mscguide - Introductory guide to using the MSCRED packagemscred
mscguide - Introductory guide to using the MSCRED packagemultampccd
mscguide - Introductory guide to using the MSCRED packagemultampccd
mscimage - Reconstruct single images from a mosaic exposuresmscred
mscimage - Reconstruct single images from a mosaic exposuresmscred
mscimatch - Match intensity scales in reconstructed mosaic imagesmscred
mscimatch - Match intensity scales in reconstructed mosaic imagesmscred
mscjoin - Join separate images into MEF filesmscred
mscjoin - Join separate images into MEF filesmscred
mscmedian - Median filter mosaic exposuresmscred
mscmedian - Median filter mosaic exposuresmscred
mscombine - Combine NICMOS or STIS files using gcombinemstools
mscopy - Copy image sets of a multi-extension FITS file.mstools
mscotfflat - Built on-the-fly flat field calibrationsmscred
mscotfflat - Built on-the-fly flat field calibrationsmscred
mscotfflat - Built on-the-fly flat field calibrationsmultampccd
mscotfflat - Built on-the-fly flat field calibrationsmultampccd
mscpixarea - Compute and apply pixel area correction using WCSmscred
mscpixarea - Compute and apply pixel area correction using WCSmscred
mscpupil - Fit and remove pupil ghost from mosaic imagesmscred
mscpupil - Fit and remove pupil ghost from mosaic imagesmscred
mscred - Mosaic reduction package (development version = xmscred)xdwred
mscsetwcs - Reset WCS using astrometry database and/or RA/DEC keywordsmscred
mscsetwcs - Reset WCS using astrometry database and/or RA/DEC keywordsmscred
mscskysub - Fit a sky surface and subtract all but the meanmscred
mscskysub - Fit a sky surface and subtract all but the meanmscred
mscsplit - Split MEF files into separate imagesmscred
mscsplit - Split MEF files into separate imagesmscred
mscstack - Combine multiple reconstructed mosaic imagesmscred
mscstack - Combine multiple reconstructed mosaic imagesmscred
mscstat - Image statistics on mosaic image extensionsmscred
mscstat - Image statistics on mosaic image extensionsmscred
mscstat - Image statistics on mosaic image extensionsmultampccd
mscstat - Image statistics on mosaic image extensionsmultampccd
msctvmark - Mark coordinates from file on previous MSCDISPLAYmscred
msctvmark - Mark coordinates from file on previous MSCDISPLAYmscred
mscwcs - Set and adjust mosaic WCSmscred
mscwcs - Set and adjust mosaic WCSmscred
msczero - Display, measure coordinates, set WCS zeropoint offsetsmscred
msczero - Display, measure coordinates, set WCS zeropoint offsetsmscred
msdel - This script removes one (1) entire FITS imset from a FITS file.mstools
mshift - Quick solution of mask translationucsclris
msigeti - Fetch an integer parameteriminterp
msigetr - Fetch a real parameteriminterp
msisqgrl - Calculate the integral inside a rectangleiminterp
msitype - Decode string into interpolant type and parametersiminterp
msivector - Evaluate interpolant at an array of x and yiminterp
msjoin - Joins files containing single IMSETs into one filemstools
mskexpr - Create masks using an expression and reference imagesproto
mskregions - Create or modify masks using regions listsproto
msreadnoise - Measures readout noise in STIS and NICMOS images.ctools
msreadnoise - Measures readout noise in STIS and NICMOS images.nicmos
msresp1d - Create 1D response spectra from flat field and sky spectraargus
msresp1d - Create 1D response spectra from flat field and sky spectrahydra
msresp1d - Create 1D response spectra from flat field and sky spectraspecred
msresp1d - Create fiber response spectra from flat field and sky spectrakpnocoude
mssort - Sort a FITS file to get all extensions of like version numbermstools
mssplit - Splits NICMOS or STIS IMSETs out into separate filesmstools
msstatistics - "Extended" gstatistics for OIF, GEIS, NICMOS and STIS filesmstools
msstreakflat - Processing of Earth streaked images for WFPC and NICMOS.ctools
msstreakflat - Processing of Earth streaked images for WFPC and NICMOS.nicmos
mstat - compute matching statistics from a matched catalogifocas
mstools - General-purpose tasks that handle NICMOS IMSETs.nicmos
mstools - Tasks to handle STIS/NICMOS IMSETs.imgtools
mtexamine - Examine the structure of a magnetic tapedataio
mtfcal - compute mtf function and error for merge from k-r filesmerge
mtlocal - Magtape i/o for special NOAO format tapes [up]noao
mvrefer - Move reference files between systemssobsolete
mxdemo - A simple peak detector written in C using the MX & CVOS APIsmxtools
mxv - multiply a 3-vector by a rotation matrix (s.p.)slalib
mysplot - Version of SPLOT with line identifying featuresmtools
n2gaussfit - 2-d Gaussian fit to images.fitting
names - Generate a list of image names from a stringiids
names - Generate a list of image names from a stringirs
names - Generate a list of image names from a stringonedspec
nbcalc - calculates narrow-band correction imagevelcal
ndark - Build NICMOS DARKFILE calibration reference file.nicmos
ndisplay - Display a science image with DQ flags superimposed.nicmos
ndprep - Make neutral density filter calibration imageonedspec
ndprogs - nD and spectral line data cube manipulation package [down]rgo
ndrift - Process a set of noon driftsdrift
ndtrans - Transpose the axes of an nD arrayndprogs
ndwfsget - Extract FITS cutout images from the NDWFS surveyxastcat
nebular - Tasks for analyzing nebular emission linesanalysis
netstatus - Print the status of the local networksystem
network_stat - network window statisticsqasun
networking - Provide background information about IRAF networkingsobsolete
newcont - Draw contours of two-dimensional data.stplot
newgeom - Geometrically correct an image.foc
newgeom - Geometrically correct an image.focgeom
newimexamine - IMEXAMINE with new FWHM measurementsnmisc
newredshift - Change the redshift of spectratools
newres - new resolution classifierifocas
news - Announcements of general interestdoc
news - Page through the system news filesystem
nfit1d - Interactive 1-d non-linear curve fit to images, tables or lists.fitting
ngaussfit - Interactive 1-d multiple Gaussian fit to images, tables or lists.fitting
nicmos - Tasks for calibrating NICMOS data.hst_calib
nicpipe - Process images through various stages of CALNICA.nicmos
nifastsky - Derive sky image for NIRI, median or min/max filteringniri
niflat - Derive flat field and bad pixel mask for NIRI imagesniri
nireduce - Reduce images from NIRI (dark or sky subtraction, flat)niri
niri - Reduction tasks for NIRI datagemini
niriexamples - Print examples of reduction scripts to screenniri
niriinfo - General help and information for the NIRI packageniri
nisky - Derive sky image for NIRI, includes masking of objectsniri
nlerrors - Compute the fits statistics and errors in the parametersnlfit
nleval - Evaluate the curve at a given pointnlfit
nlevel - Documentation on the N-level atom approximationnebular
nlfit - Fit the functionnlfit
nlfit - IRAF Levenberg-Marquardt non-linear least squares packagemath
nlfree - Free memory allocated by nlinitnlfit
nlincorr - Build NICMOS NLINFILE calibration reference file.nicmos
nlinit - Initialize the fitting routinesnlfit
nlpget - Get the values of the fitted parametersnlfit
nlstat - Get the value of an NLFIT parameternlfit
nlvector - Evaluate the curve at an array of pointsnlfit
noao - The NOAO optical astronomy packagesclpackage
nobjects - list the number of objects in categories from a catalogifocas
nobsolete - Obsolete tasks to be phased out in a future release [up]noao
noise - Solve for noise model for a ccd chipscp
noisemodel - Determine noise model parameters from CCD frames.wfpc
noisepars - Pset for setting noise parameters used in the wiener task.restore
normalize - Enter normalization factors into cube image headerfabry
normalize - Normalize imagesgeneric
normclip - Normalize WF/PC flat fields among chips.w_calib
normflat - Create a flat field by normalizing and replacing low valuesgeneric
normspflat - Normalize STIS CCD fringe flat.stis
north - Print the position angles of images.ctools
note - Note the long integer position in a file for a later seekfio
nprepare - Prepare NIRI data for reductionsniri
nproto - Prototype (temporary, contributed) tasks [up]noao
nsappwave - Add approximate wavelength calibration to the headersniri
nscan - Get number of arguments successfully converted in last scanfmtio
nscombine - Combine NIRI spectraniri
nscut - Cut spectrum out of image frameniri
nsextract - Extract 1D and 2D NIRI spectraniri
nsflat - Derive flat field for NIRI spectra based on GCAL lamp exposuresniri
nslots - Number of time slots between two epochs.grtools
nsppkern - Plot metacode on a NSPP (NCAR) plotter deviceplot
nsreduce - Reduce spectra from NIRI (dark, sky, flat, trim)niri
nssdist - Establish S-distortion for NIRI spectraniri
nsstack - Group NIRI data taken at the same offset positionniri
nstar - Fit the psf to predefined groups of starsdaophot
nstransform - Rectify longslit NIRI spectraniri
nswavelength - Establish wavelength calibration for NIRI spectraniri
ntcontour - Plot contours of N_e- or T_e-sensitive line ratiosnebular
ntplot - Construct N_e vs. T_e plot for observed diagnostic ratiosnebular
nut - compute the nutation matrix for a given dateslalib
nutc - compute the nutation components for a given dateslalib
nwlimits -fts
nws - Get the current National Weather Service forecastnlocal
oap - convert from observed to apparent placeslalib
oapqk - convert from observed to apparent placeslalib
obackground - View and plot statistics of reference framesoscir
objcalib - Photometrically calibrate an objective prism image.focprism
objimages - extract object images to individual subimagesifocas
objmasks - Detect objects in images and make masksnproto
obs - look up an entry in a list of groundbased observing stationsslalib
observatory - Examine and define observatory parameters [up]noao
observe - Make an observationccdacq
obsfile - Prepare an observations file from a text filephotcal
obsfile - Prepare an observations file from a text filexphotcal
obsmode - A short explanation of the observation mode keywordssynphot
obspars - edit observing parametersccdacq
obsum - Produce brief, time-ordered summary of groups in data.hrs
obsutil - Observing utilities (planning or evaluation) [up]noao
ocrreject - Generate a STIS CCD image (images and spectra) free ofstis
odeadtimez - Compute the HRS paired-pulse coefficients.z_calib
offsets - Builds cross-correlation image (shift only).dither
ofixpix - Fix bad pixels using text file (proto V2.10.4)obsolete
ohead - Print header information for OSCIR imagesoscir
oimcombine - IMCOMBINE from V2.11-V2.11.3obsolete
olddither - Older version (1.2) of dithersobsolete
onedspec - One dimensional spectral red & analysis package [up]noao
onedstds - Description of the spectral calibration library in theonedspec
onerror - Post a procedure to be executed if error recovery occursetc
onexit - Post a procedure to be executed upon process shutdownetc
open - Open or create a text or binary filefio
opstrm - operate on an input text streamifocas
orderphase - Order time series observations by fractional phases.timeseries
orfits - Convert a FITS image into an IRAF image (dataio V2.10.4)obsolete
orient - Reorient image to N up and E left or undo re-orientationxdimsum
orient - Reorient image to N up and E left or undo re-orientationxirred
orient - Reorient image to have N up and E left, or undo re-orientationdimsum
orphan - List images whose pixel files have been deletednlocal
osb - Bit and byte primitivessys
oscir - Reduction tasks for OSCIR datagemini
oscirinfo - General help and information for the OSCIR packageoscir
oscmd - Send a command to the host operating systemetc
osfn - Return the host system equivalent of an IRAF filenamelanguage
otr_burst - spherical harmonic transform then burst files (SRCstream)suntrans
otrans - spherical harmonic transform the interpolated images (SRCpiece)suntrans
ovac2air - Convert wavelengths from vacuum to air.stis
overflowx - Correct an image for 8-bit overflow.focutility
overlap - Overlap two images by a certain amount of lines or columns.sdisplay
overscan - Simulate the effect of overscanning in an image.testdata
oview - Quick view of select frames in OSCIR imageoscir
owfits - Convert an IRAF image into a FITS image (dataio V2.10.4)obsolete
p2geo - Evaluate polynomial fit file and make a GEO image for 'newgeom'.focgeom
pa - compute the parallactic angle from the hour angle and declinationslalib
package - CCD image reduction packageccdred
package - CCD image reduction packagequad
package - CCD image reduction packagexccdred
package - Define a new package, or print the current package nameslanguage
package - Discussion and overview of package including sections on:onedspec
package - I.4 Tutorial #1 IRAF Structure (irafintro)index
package - Package parameters and general description of packageapextract
package - Package parameters and overviewquadred
packages - I.3 A Quick View of IRAF (irafintro)index
pairmass - Plot airmass vs time for a given coordinateobsutil
pairmass - Plot the airmass as a function of zenith distancenlocal
panic - I.8 Common Problems: Their Cause and Cure (irafintro)index
paperprod - Tasks for generating paper products.hst_calib
parameter - I.8 Common Problems: Their Cause and Cure (irafintro)index
parameters - Discussion of parameter attributeslanguage
parg[bcsilrdx] - Pass an argument to a printffmtio
pargstr - Pass a string type argument to a printffmtio
parkey - Put an IRAF parameter into an image or table header keyword.ttools
partab - Transfer an IRAF parameter to a table element.ttools
parthitv - Remove particle event.hsp
parthity - Find particle hits and compute dark rate.y_calib
parthitz - Locate particle events and compute dark rate.z_calib
paste - Paste files side-by-side with formatting optionsnlocal
pathnames - Expand a file template into a list of OS pathnamessystem
patmatch - General pattern matchingfmtio
pav - compute the bearing of a point on a sphere w.r.t. anotherslalib
pavg - Plot the average of the lines of an image or image sectionnlocal
pca - Principal components analysismtools
pcalc - Do arithmetic on a list of apphot/daophot tables databasesptools
pcalc - Do arithmetic operations on a list of apphot databasesapphot
pcalc - Do arithmetic operations on a list of daophot databasesdaophot
pcarf - Generates a ROSAT PSPC ARF for an input PHA filerosat
pcd - apply pincushion/barrel distortion to tangent plane coordinatesslalib
pcexpmap - Creates exposure map for ROSAT PSPC observationrosat
pcol - Plot a column of an imageplot
pcols - Plot the average of a range of image columnsplot
pcombine - Combine flux calibrated datasets.spec_polar
pcomputer - Help page for users of CTIO pc terminalsmanuals
pconcat - Concatenate a list of apphot/daophot databasesptools
pconcat - Concatenate a list of daophot databasesdaophot
pconvert - Convert a text database to a tables databaseapphot
pconvert - Convert from an apphot/daophot text to tables databaseptools
pcparpha - Generates a background PHA spectrum for ROSAT PSPCrosat
pda2h - compute the hour angle corresponding to a given azimuthslalib
pdm - Find periods in light curves by Phase Dispersion Minimizationastutil
pdq2h - compute the hour angle corresponding to a given parallactic angleslalib
pdr - Preliminary Design Review; software engineeringdoc
pdump - Print selected columns of a list of daophot/apphot databasesptools
pdump - Print selected fields from a list of apphot databasesapphot
pdump - Print selected fields from a list of daophot databasesdaophot
peakfind - Fit peaks in a power spectrum (automatic initial guessing).grtools
peaks - Find peaks in x and y data pointsxtools
pedsky - Subtract pedestal and sky from NICMOS images.nicmos
pedsub - Subtract pedestal from NICMOS images.nicmos
perdgrm - Adds a sine curve and/or pulse-profile to a light curve.xte
period - determine the period using epoch foldingxtiming
pertel - update osculating orbital elements by applying perturbationsslalib
pertue - update universal elements by applying perturbationsslalib
pexamine - Interactively examine and edit a daophot databasedaophot
pexamine - Interactively examine and edit an apphot databaseapphot
pexamine - Interactively examine and edit an apphot/daophot databaseptools
ph4mphot - Do aperture photometry on combined 4m mosaic imagesxphotred
pha_center - Plot histogram of PHA results for all diodes.z_calib
pha_sig2rms - Plot histogram of PHA signal-to-noise ratio for all diodes.z_calib
pha_summary - Produce report on results of PHA observations.z_calib
pha_text - Print text summary of PHA results.z_calib
phav - Calibrate discriminator threshold setting.hsp
phay - Pulse height analysis.y_calib
phaz - Perform a Pulse Height Distribution analysis (PHA).z_calib
phelp - Paged HELP: collects and pages the output of HELPsystem
phfiltpars - Edit the catalog file filtering parametersxphotred
phimfind - Select catalog images and / or create catalog object listsxphotred
phimsets - Group standard star or program images by filterxphotred
phistogram - Plot or print the histogram of an image or listplot
phlist - List the photometric processing informationxphotred
phlshifts - Compute the relative shifts of images by group using coordinatesxphotred
phmark - Mark standard stars on displayed imagesxphotred
phobsfile - Prepare a photometric observations filexphotred
phonphot - Do aperture photometry on combined 2m ONIS imagesxphotred
phot - Compute sky values and initial magnitudes for a list of starsdaophot
phot - Measure magnitudes for a list of starsapphot
photcal - Photometric Calibration Packagedigiphot
photcheck - Utility for monitoring photometric stability of a data setdimsum
photdiff - Calculate photometric variability using photcheck output datadimsum
photman - Photometry Manualmanuals
phphot - Do general aperture photometry on imagesxphotred
phwshifts - Compute the relative shifts of images by group using wcs infoxphotred
pickfile - Get the file name picked from the input file template.imgtools
pimtext - Put text directly into images using a pixel font.vtel
pimtext - Put text directly into images using a pixel font.vtelold
pipeline - GONG pipeline processing programs (ea)grasp
pipeline - ING instrument full reduction [up]rgo
pixcoord - Compute pixel coordinates of stars in an image.wfpc
pixedit - Screen editor for image pixelsimgtools
pixfix - Resurrect a header for an orphaned pixel filenlocal
pixheader - Read internal headers from pixel filesnlocal
pixlocate - Print positions of all points inside (or outside) aimgtools
pixselect - List pixel values within a certain rangectio
pixupdate - Update the internal pixel headers with the header pathnamesnlocal
pkanalyse - Analyse PEAKFIND output tables.grtools
planel - compute the approximate heliocentric position/velocity of a planetslalib
planet - compute the approximate heliocentric position/velocity of a planetslalib
plante - compute approximate topocentric apparent position of a planetslalib
plband - Plot a set of passbands.synphot
plbias - Correct linear polarization for bias in Q and Uspec_polar
plcreate - create a pixel list from a regionximages
plm_trim - generate trimming limits for spherical harmonic transform (SRCstream)suntrans
plotting - I.7 Tutorial #4 Implot Task (irafintro)index
plr2rec - transforms vector from polar (velocity,modulation) intovelcal
plratio - Plot the ratio of observed to synthetic spectral orsynphot
plspec - Plot spectral and photometric data.synphot
pltrans - Plot photometric transformation diagrams (e.g., color-colorsynphot
pltsol - Calculate plate solution from table of positions.gasp
plucy - Multiple channel photometric image restoration.contrib
pm - apply the correction for proper motion to a starslalib
poffsets - Find pixel offsets using cross-correlation.ctools
polbin - Rebin Stokes and polarization spectra.spec_polar
polcalc - Calculate polarization from Stokes IQUV spectra.spec_polar
poleffv - Calculate polarization efficiency.hsp
polmo - correct site longitude and latitude for polar motionslalib
polnorm - Normalize Stokes QUV spectra by Stokes I.spec_polar
polpav - Calibrate position angle offset.hsp
polplot - Stacked plot of flux and polarization spectra.spec_polar
polverify - Verify polarimetry calibrations.hsp
polyepoch - Fit polynomials to coefficients as functions of the epoch.hsp
polyeval - Evaluate calibration corrections.hsp
polyfit - Fit a polynomial to a specified quantity.hsp
polyfit - Fit polynomial to list of X,Y datautilities
polymark - Create polygon lists for polyphotapphot
polyphot - Measure magnitudes inside a list of polygonal regionsapphot
ponpars - Edit the 2m ONIS aperture photometry parametersxphotred
populate - Populate a db with a new componentaspec
posvel - Calculate position and velocity vector of the spacecraft.hsp
powercor - Apply power law correction to mountain reduced spectraiids
powerpars - Pset with parameters for powerlaw function.fitting
powerspec - Compute the power spectrum of an image.fourier
pp_dads - Paper products generationpaperprod
ppars - Edit the general photometry parametersxphotred
pprofile - Plot or print radial profile or encircled energy.ctools
prcache - Show process cache, or lock a process into the cachelanguage
prebn - compute the FK4 matrix of precession between two epochsslalib
prec - compute the FK5 matrix of precession between two epochsslalib
preces - precess coordinates in either the FK4 or FK5 systemsslalib
precess - Precess a list of astronomical coordinatesastutil
precl - compute the longterm matrix of precession between two epochsslalib
precor - Cosmic-ray processing.dither
precss - precess coordinates in either the FK4 or FK5 systemsslalib
prekeep - Save the most recent previewed spectrumsam
prenumber - Renumber a list of apphot/daophot databasesptools
prenumber - Renumber stars in a daophot databasedaophot
prenumber - Renumber stars in an apphot databaseapphot
prenut - compute the FK5 matrix of precession and nutationslalib
prepspec - Prepare a spectrum for subsequent de-fringing procedures.stis
prering - Set up first guess ring parameters.taucal
preview - Preview spectra with extraction and roughsam
prf - information on the Point Response Function (or psf)xray
prf - Point Response Function (or psf) informationxspatial
prfit - Print contents of fit tables created by fitting task.fitting
print - Print a line on the standard outputlanguage
printf - Formatted print to STDOUTfmtio
printf - Formatted print to the standard outputlanguage
printing - VII.I Using the Computers at CTIO (appendix)index
printlog - Logfile task (hidden task)gemtools
problems - I.8 Common Problems: Their Cause and Cure (irafintro)index
problems - Submit an STSDAS software problem report to STScI.stsdas
proc - Combine find, sky, profile, whole and extractsam
process - A task generated by BATCHREDiids
process - A task generated by BATCHREDirs
profile - Fit optimal extraction profilesam
protect - Protect a file from deletionfio
protect - Protect a file from deletionsystem
proto - Prototype or interim tasksclpackage
prow - Plot a line (row) of an imageplot
prows - Plot the average of a range of image linesplot
pscor - Correct Power Spectrum for 2pt difference filter.grtools
pselect - Select records from an apphot databaseapphot
pseudocolor - Select pseudocolor enhancementiis
psf - Compute the point spread functiondaophot
psfextr - Extract a subsection of an image to be put in the PSF library.w_calib
psfg2d - Create a MATPHOT PSF file with a 2-d Gaussian PSF.mxtools
psfmatch - Match the point-spread functions of 1-D or 2-D imagesimmatch
psfmeasure - Measure PSF sizes from stellar imagesnmisc
psfobs - Simulate a CCD stellar observation using a MATPHOT PSF file.mxtools
psfpars - Pset for setting psf parameters used in the wiener task.restore
psfprep - Convert a PSF image into the MATPHOT PSF format.mxtools
psfstar - Add a star to an image using a MATPHOT PSF file.mxtools
psikern - IRAF GIO Kernel to produce PostScript output.stplot
psort - Sort an apphot databaseapphot
pspc_fitting - for more information on ROSAT/PSPC spectral fittingxspectral
pspc_hrcolor - compute an image which reflects the xray color of a PSPC observationxplot
pstack - Plot a stack of pixel values from a MultiAccum image.nicmos
pstats - Plot a stack of MultiAccum image statistics.nicmos
pstselect - Select candidate psf stars based on proximitydaophot
ptox - Convert a power/phase image to a complex image.grtools
pttest - Run basic tests on the ptoolsx package tasksptools
put_global - Set the value of a parameter for all components in the dbaspec
putcal - Place parameter values from a calibration pset into data filesctools
putcc - Put only printable characters to a filefio
putline - Put a line to to a text filefio
putlog - Put a message to the logfilelanguage
putsqib - Merge a squibby brightness image into a full disk image.vtel
putsqib - Merge a squibby brightness image into a full disk image.vtelold
pv2el - convert J2000 position and velocity to osculating elementsslalib
pv2ue - convert instantaneous position and velocity to universal element setslalib
pvector - Plot an arbitrary vector in a 2D imageplot
pvobs - compute the geocentric position / velocity of an observing stationslalib
pvol - Project volume image (generates 'rotating' volume images)vol
pweight - Compute weights using phottab, for use with splice.ctools
pwindow - Calculate window function power spectrum.grtools
pxcoord - List pixel coordinates of guide stars.gasp
pxy - apply a linear model to a set of expected and measured [x,y]slalib
qasun - GONG image quality assessment tasks (ww)grasp
qbox - An older script version of xbox (superceded)ucsclris
qcgong - GONG image quality control tasks (da)grasp
qcplot - 1 to 4 row and/or column plots of imagesqcgong
qdarkcombine - Combine and process dark count images using quadprocquadred
qdcmd - Show WFPC2COLOR results as a color-magnitude diagrammxtools
qdisplay - Display the 4 separate mosaic quadrant imagesnlocal
qdwfpc2 - QDPHOT analysis of 2 HST WFPC2 imagesmxtools
qfastsky - Derive sky image for QUIRC, median or min/max filteringquirc
qflat - Derive flat field and bad pixel mask for QUIRCquirc
qflatcombine - Combine and process flat field images using quadprocquadred
qhdisplay - Display the 4 separate mosaic quadrant images (harcon)nlocal
qmosaic - Quick mosaic of the four WFPC or WFPC2 frames into one image.wfpc
qp2fits - convert from PROS QPOE format to BINTABLE FITS formatxdataio
qpaddaux - add additional BINTABLEs to existing QPOE filexdataio
qpappend - append a list of input QPOEs to produce a single QPOE filexdataio
qpcalc - Modify/Create event attributes with calculatorxproto
qpcopy - copy a qpoe file to another qpoe fileximages
qpcreate - Convert an ASCII event-list to PROS/QPOE formatxproto
qpgapmap - calculate the de-gapped HRI coordinates (detx,dety)xdataio
qphedit - edit header parameters in a qpoe or image fileximages
qphot - Measure quick magnitudes for a list of starsapphot
qplintran - apply a linear transformation to a QPOE file (like IMLINTRAN)ximages
qplist - list individual photon records in regions and aux. recordsximages
qpoe - description of the QPOE data file and user interfacexray
qpphase - Generate a QPOE file, adding a new element attribute - phasextiming
qprotate - apply a rotation angle to a QPOE fileximages
qpshift - apply a linear shift to a QPOE fileximages
qpsim - event simulation taskxspatial
qsky - Derive sky image for QUIRC, includes flagging of objectsquirc
qsort - General quick sort for any data structureetc
quad - Demultiplex a raw mosaic into a single tiled output imagenlocal
quad - quad CCD processing packageared
quadjoin - Rejoin single amplifer images produced by quadsplitquadred
quadred - CCD reductions for QUAD amplifier dataimred
quadscale - Scale sections by gain factorsquadred
quadsections - Produce image section list for sections of quadformat imagesquadred
quadsplit - Split quadformat data into individual single amplifer imagesquadred
quality - Generate HRS diode quality image.z_calib
queue - Show a queue's status (printer by default)nlocal
quickfit - Fit an ellipse to the solar limb.vtel
quickfit - Fit an ellipse to the solar limb.vtelold
quickhelp - Quick Introduction to the IRAF systemmanuals
quickie - Quick data reduction [up]rgo
quirc - Reduction tasks for Hokupa'a/QUIRC datagemini
quircinfo - General help and information for the QUIRC packagequirc
quzcif - Interrogates Caldb for location of a datasetcaltools
qzerocombine - Combine and process zero level images using quadprocquadred
r2df - Convert a CTIO 2-d frutti image into an IRAF imagemtlocal
r49fits - A fits reader for obsolete versions of iraf.tobsolete
radix - Encode a number in the specified radixlanguage
radlist - List an azimuthally averaged radial profilenlocal
radplt - PLot the radial profile of an object (noao.proto V2.9)obsolete
ramps - make a series of ramp observationsccdacq
random - Generate an image of random numbersmodel
range - normalize an angle to the range -pi <= angle <= pi (s.p.)slalib
ranges - Expand a range specification into a listnlocal
ranges - Parse a list of ranges "1,3,5-7,.."xtools
ranorm - normalize an angle to the range 0 <= angle <= 2pi (s.p.)slalib
rappendx - Append reseau entries from one file to another.focgeom
rarc2pros - convert ROSAT archive files to PROS format(root_ext.fits)xdataio
rarc2pros_c - convert ROSAT archive files to PROS format(root_EXT.FITS)xdataio
rashead - Show rasterfile header information.sobsolete
rastoim - Convert rasterfile to IRAF image.sobsolete
ratiox - Divide two or more images prior to relative DE corrections.focphot
rbinary - Create an image from a binary file.imgtools
rbkmap_make - script to create rotated background map from QPOE fileeintools
rbnpha - Compresses a PHA datasetheasarc
rbnrmf - Physically compresses a RMF filecaltools
rbnrpsf - Rebins a radial point spread functioncaltools
rbs - Quick-look RBS data reductionquickie
rc - Interactively label a plot with text strings.stplot
rcamera - Convert a CAMERA image into an IRAF imagemtlocal
rcardimage - Convert a cardimage file into a text filedataio
rcc - compute the difference between TDB and TT in secondsslalib
rccd - Convert an IFA CCD image into an IRAF imagenlocal
rccd4th - Convert a CCD FORTH image into an IRAF imagesomtlocal
rcombine - Average or sum rapid-readout data with propagation of errors.ctools
rcp - VII.I Using the Computers at CTIO (appendix)index
rd2xy - Translate RA/Dec to the pixel coordinate.imgtools
rdifferx - Plot histogram of differences between entries in separate files.focgeom
rdirectoryx - Print directory of all entries in a reseau file.focgeom
rdplan - compute approximate topocentric apparent position of a planetslalib
rdprint - Print difference between two reseau entries.focgeom
rdssa - Convert the PDB SVDF.DAT file into an STSDAS table.ctools
rdumpf - Convert IPPS rasters from a DUMPF tape to IRAF imagesmtlocal
read - I.5 Tutorial #2 Reading and Writing Data to Tape (irafintro)index
read - Read a binary block of data from a filefio
read5 - Read Grammy type 5 disk files into an IRAF image.fts
read6 - Read Grammy type 6 disk files into an IRAF image.fts
reading - I.8 Common Problems: Their Cause and Cure (irafintro)index
readvt - Read a full disk tape and produce an IRAF image.vtel
readvt - Read a full disk tape and produce an IRAF image.vtelold
rearcfts - Read entire FTS archive tapes.fts
reblock - Copy a binary file, optionally reblockingdataio
rec2plr - transforms from rectangular coordinates into polarvelcal
redcorr - Correct line flux for interstellar reddeningnebular
redefine - Redefine a tasklanguage
redshift - Tasks for determining redshifts and dispersions.contrib
reduce - Driver script for firstpass, interactive shift measurements, maskpassdimsum
reduce - Parameter description of main reduction taskdimsum
refco - compute the refraction coefficientsslalib
refcoq - compute the refraction coefficients (fast version)slalib
refdata - Pset to specify common synphot parameters.synphot
references - Find all help database references for a given topicsystem
reflresamp - Resample or reflect an image or vector usingregistration
reflux - Apply new absolute sensitivity corrections to HRS spectra.hrs
reformat - change image on heliographic coordinate system between unfoldedsuntrans
refro - compute the atmospheric refraction for optical and radio wavelengthsslalib
refspectra - Assign reference spectra to object spectraiids
refspectra - Assign reference spectra to object spectrairs
refspectra - Assign reference spectra to observationsctioslit
refspectra - Assign reference spectra to observationskpnocoude
refspectra - Assign reference spectra to observationskpnoslit
refspectra - Assign wavelength reference spectra to other spectraargus
refspectra - Assign wavelength reference spectra to other spectraechelle
refspectra - Assign wavelength reference spectra to other spectrahydra
refspectra - Assign wavelength reference spectra to other spectraonedspec
refspectra - Assign wavelength reference spectra to other spectraspecred
refv - apply the refraction correction to a Cartesian 3-vectorslalib
refz - apply the refraction correction to a zenith distanceslalib
regions - description of PROS region masksxray
regions - Produce guide star region files (as STSDAS tables).gasp
registar - (intentionally misspelled), combines shiftfix & magshiftfixdimsum
reidentify - Automatically identify features in spectraargus
reidentify - Automatically identify features in spectrahydra
reidentify - Automatically identify features in spectraiids
reidentify - Automatically identify features in spectrairs
reidentify - Automatically identify features in spectraonedspec
reidentify - Automatically reidentify features in spectraspecred
reidentify - Reidentify arc lines and determine new dispersion functionsctioslit
reidentify - Reidentify arc lines and determine new dispersion functionskpnocoude
reidentify - Reidentify arc lines and determine new dispersion functionskpnoslit
reidentify - Reidentify featureslongslit
release_xray - release notes for this buildxray
relsen - Calculate relative sensitivity (including instrumentalhsp
remap - Remap the input image using bicubic interpolationgongcor
remap - register disk image onto a latitude-longitude grid (SRCpiece)suntrans
rename - Change the name of a filefio
rename - Rename a filesystem
reopen - Reopen a file on another file descriptorfio
resample - Resample calibrated fluxes to a linear wavelength scale.ctools
resavg - Average reseau entries.focgeom
reset - Reset the value of an environment variablelanguage
resfind - Automatically find reseau marks.focgeom
resize - Update the IRAF stty terminal size manuallynlocal
resolution - resolution classifierifocas
respar - User specified resampling parameters pset.registration
response - Determine response calibrationctioslit
response - Determine response calibrationkpnocoude
response - Determine response calibrationkpnoslit
response - Determine response calibrationlongslit
response - Determine response calibrationspecred
restore - Deconvolve or filter 1- or 2-dimensional images.analysis
revalfitx - Evaluate, at certain points, fit produced by 'rfitx'.focgeom
revisions - Revisions to installed softwaredoc
rewind - I.5 Tutorial #2 Reading and Writing Data to Tape (irafintro)index
rewind - Rewind a device (magtape)system
rextrap - Extrapolate a reseau grid by one row or column on all sides.focgeom
rfindx - Locate reseau marks in an image.focgeom
rfits - Convert FITS image data into a list of IRAF imagesdataio
rfits - I.5 Tutorial #2 Reading and Writing Data to Tape (irafintro)index
rfits - VII.I Using the Computers at CTIO (appendix)index
rfits2pros - convert ROSAT PI data tapes to PROS format(root00n)xdataio
rfitx - Calculate fit of distorted coordinates to reference coordinates.focgeom
rfixx - Fix holes in reseau file entries.focgeom
rftsarc - Read sections of FTS archive tapes.fts
rgb - Select true color mode (red, green, and blue frames)iis
rgbdisplay - Display an RGB imagecolor
rgbdither - Create an 8-bit RGB dithered imagecolor
rgbsun - Create a Sun 24-bit RGB rasterfilecolor
rgbto8 - Create an 8-bit RGB image with special color mapcolor
rgenx - Generate a reseau file or entry.focgeom
rh_fits2pros - task to install HRI RDF sample dataxinstall
rheaders - Register using FITS coordinate parameters.registration
ridsfile - Convert IDSFILES from a DUMPF tape to IRAF imagesmtlocal
ridsmtn - Convert mountain format IDS/IRS data to IRAF imagesmtlocal
ridsout - Convert a text file in IDSOUT format to IRAF imagesmtlocal
ringavg - Compute pixel averages in concentric rings about given centerproto
ringpars - Compute ring parameters for a series of imagesfabry
rinterx - Perform simple interpolation between reseau grids.focgeom
ripple - Compute the HRS ripple function coefficients.z_calib
rlogin - VII.I Using the Computers at CTIO (appendix)index
rmap - Map a full disk image into a 180 by 180 flat image.vtel
rmap - Map a full disk image into a 180 by 180 flat image.vtelold
rmarkerx - Interactively modify the positions in a reseau table.focgeom
rmbin - Find/delete binary files in subdirectoriessoftools
rmedian - Ring median filter a list of 1D or 2D imagesimfilter
rmfiles - Find/delete files in subdirectoriessoftools
rmfringe - Remove fringe patternmscred
rmfringe - Remove fringe patternmscred
rmode - Ring modal filter a list of 1D or 2D imagesimfilter
rosat - ROSAT mission specific packageftools
rosat_files - description of ROSAT data files which can be inputxray
rosprf - generate images that model ROSAT PRF (PSF)xspatial
rotate - Rotate and shift a list of 2-D imagesimgeom
rotcor - Rotation correct a m-nu diagram.grtools
rotfind - Finds rotation angle from a set of cross-correlation images.dither
rp_fits2pros - task to install PSPC RDF sample dataxinstall
rpds - Convert a PDS image into an IRAF imagemtlocal
rplotx - Plot magnified vector differences between reseau grids.focgeom
rprintx - Print out reseau mark coordinates.focgeom
rpsfqdp - Converts OGIP format radial profile file to ASCII QDPcaltools
rrcopy - Convert IPPS rasters from an RCOPY tape to IRAF imagesmtlocal
rremovex - Fill in reseau marks with cosmetic data.focphot
rretmmt - Convert an MMT Reticon image into an IRAF imagesomtlocal
rrotat - Rotate an imagemodel
rsdpunix - Create RSDP format UNI file for FOC.focutility
rskysub - Sky subtract images using running mean or medianproto
rsp2rmf - Converts SF format response matrices to OGIP FITS formatcaltools
rspectext - Convert ascii text spectra to image spectraonedspec
rstat - Print statistics about one or two reseau entries.focgeom
rsubset - Extract or print a subset of a reseau grid.focgeom
rtextimage - Convert text files to IRAF imagesdataio
rtodbx - Put reseau data in a form suitable for geometry tasks infocgeom
rtransformx - Perform linear transformations on reseau coordinates.focgeom
runmean - make running mean images for detrending, filtering allowed (SRCpiece)suntrans
rv - Radial velocity analysis package [up]noao
rvcorrect - Compute radial velocity correctionsastutil
rvcorrect - Compute radial velocity correctionsrv
rverot - compute the earth rotation velocity component in a given directionslalib
rvgalc - compute the dynamical LSR velocity component in a given directionslalib
rvidlines - Measure radial velocities from spectral linesrv
rvlg - compute the solar velocity component in a given directionslalib
rvlsrd - compute the peculiar solar velocity component in a given directionslalib
rvlsrk - compute the standard solar velocity component in a given directionslalib
rvreidlines - Reidentify spectral lines and measure radial velocitiesrv
rvxcor - Compute radial velocities via cross correlationctio
s2tp - project spherical coordinates onto the tangent plane (s.p.)slalib
s4mpars - Edit the 4m MOSAIC sky fitting parametersxphotred
saexpd - Reads science array vectors and outputs generic FITS files.xte
saextrct - Creates lightcurve and/or spectrum from science array vectors.xte
sam - Package for extraction of spectra from 2d frames [up]rgo
sampcum - Accumulate a MultiAccum image from a set of sample differences.nicmos
sampdiff - Compute first differences of samples in a MultiAccum image.nicmos
sampinfo - Print sample information for a MultiAccum image.nicmos
samplepars - Pset with data sampling parameters.fitting
saodump - Make image and colormap files from SAOimage displaysobsolete
saolpr - Print an image from an SAOImage display.playpen
sapertures - Set or change aperture header informationargus
sapertures - Set or change aperture header informationechelle
sapertures - Set or change aperture header informationhydra
sapertures - Set or change aperture header informationkpnocoude
sapertures - Set or change aperture header informationonedspec
sapertures - Set or change aperture header informationspecred
sarith - Spectrum arithmetickpnocoude
sarith - Spectrum arithmetickpnoslit
sarith - Spectrum arithmeticlongslit
sarith - Spectrum arithmeticonedspec
satlink - Help page for use of the Satellite Link to the USmanuals
sbands - Bandpass spectrophotometry of spectraonedspec
sc2dref - Add to the file header all required keywords necessary tostis
scanc - Get the next character from a scanfmtio
scatterv - Calculate scattered light contribution.hsp
scc_to_utc - convert from ROSAT spacecraft clock time to UTCtimcor
schmittbin - Compute regression coefficients by Schmitt's method.statistics
sclean - Sigma-CLEAN deconvolution of 2-d images.restore
scombine - Combine spectractioslit
scombine - Combine spectraechelle
scombine - Combine spectrakpnocoude
scombine - Combine spectrakpnoslit
scombine - Combine spectraspecred
scombine - Combine spectra having different wavelength rangesargus
scombine - Combine spectra having different wavelength rangeshydra
scombine - Combine spectra having different wavelength rangesiids
scombine - Combine spectra having different wavelength rangesirs
scombine - Combine spectra having different wavelength rangesonedspec
scoords - Set spectral coordinates as a pixel array (1D spectra only)onedspec
scopy - Copy spectra including aperture selection and format changesctioslit
scopy - Copy spectra including aperture selection and format changeskpnocoude
scopy - Copy spectra including aperture selection and format changeskpnoslit
scopy - Select and copy apertures in different spectral formatsargus
scopy - Select and copy apertures in different spectral formatsechelle
scopy - Select and copy apertures in different spectral formatshydra
scopy - Select and copy apertures in different spectral formatsiids
scopy - Select and copy apertures in different spectral formatsirs
scopy - Select and copy apertures in different spectral formatsonedspec
scopy - Select and copy apertures in different spectral formatsspecred
scopy - Sum and extract spectra from long slit to 1D formatlongslit
scp - Simple CCD processing package [up]rgo
sdqflags - Print sum of data quality flags.stis
sdtst - calculates the standard deviation of an image using a templatevelcal
seam - Smooth the boundaries between mosaicked WF/PC frames.wfpc
sec2time - Convert time offset to absolute timetime
sections - Expand an image template on the standard outputimutil
seek - Set the file offset of the next char to be read or writtenfio
seepsf - Compute an image from the point spread functiondaophot
seexpd - Reads science events data and outputs generic FITS files.xte
seextrct - Creates lightcurve and/or spectrum from science events data.xte
select - select objects by identifier from a catalogifocas
select_list - make list from windowqasun
selftest - Self test program to check DTOI transformationdtoi
sensfunc - Compute instrumental sensitivity from standard starsspecred
sensfunc - Create sensitivity functionctioslit
sensfunc - Create sensitivity functionechelle
sensfunc - Create sensitivity functioniids
sensfunc - Create sensitivity functionirs
sensfunc - Create sensitivity functionkpnocoude
sensfunc - Create sensitivity functionkpnoslit
sensfunc - Create sensitivity functionlongslit
sensfunc - Create sensitivity functiononedspec
sep - compute the angle between two points on a sphere (s.p.)slalib
service - Service a query from a background joblanguage
set - Set an environment variablelanguage
setairmass - Compute effective airmass and middle UT for an exposureargus
setairmass - Compute effective airmass and middle UT for an exposureastutil
setairmass - Compute effective airmass and middle UT for an exposurectioslit
setairmass - Compute effective airmass and middle UT for an exposureechelle
setairmass - Compute effective airmass and middle UT for an exposurehydra
setairmass - Compute effective airmass and middle UT for an exposureiids
setairmass - Compute effective airmass and middle UT for an exposureirs
setairmass - Compute effective airmass and middle UT for an exposurekpnocoude
setairmass - Compute effective airmass and middle UT for an exposurekpnoslit
setairmass - Compute effective airmass and middle UT for an exposurelongslit
setairmass - Compute effective airmass and middle UT for an exposureonedspec
setairmass - Compute effective airmass and middle UT for an exposurespecred
setcat - create or modify catalog interactivelyifocas
setinstrument - Set instrument parametersccdred
setinstrument - Set instrument parametersmscred
setinstrument - Set instrument parametersmscred
setinstrument - Set instrument parametersmultampccd
setinstrument - Set instrument parametersmultampccd
setinstrument - Set instrument parametersquad
setinstrument - Set instrument parametersquadred
setinstrument - Set instrument parametersxccdred
setjd - Compute and set Julian dates in imagesargus
setjd - Compute and set Julian dates in imagesastutil
setjd - Compute and set Julian dates in imagesctioslit
setjd - Compute and set Julian dates in imagesechelle
setjd - Compute and set Julian dates in imageshydra
setjd - Compute and set Julian dates in imagesiids
setjd - Compute and set Julian dates in imagesirs
setjd - Compute and set Julian dates in imageskpnocoude
setjd - Compute and set Julian dates in imageskpnoslit
setjd - Compute and set Julian dates in imageslongslit
setjd - Compute and set Julian dates in imagesonedspec
setjd - Compute and set Julian dates in imagesspecred
setmwcs - Edit the MWCS of an image (for data not produced by GONG).grtools
setpsf - set the PSF description in a catalog from a text fileifocas
setsize - Determine the size of a TS or PS dataset.grtools
setup - Setup the SPEC1 package for a particular instrumentspec1
setup - Setup the SPEC2 package for a particular instrumentspec2
sf2pha - Converts SF format PHA file to OGIP FITS formatheasarc
sfit - Fit spectra and output fit, ratio, or differenceonedspec
sfit - Fit spectra and output fit, ratio, or differencespecred
sflatcombine - Combine and process mosaic sky flat field exposuresmscred
sflatcombine - Combine and process mosaic sky flat field exposuresmscred
sflatcombine - Combine and process mosaic sky flat field exposuresmultampccd
sflatcombine - Combine and process mosaic sky flat field exposuresmultampccd
sflip - Flip data and/or dispersion coordinates in spectraargus
sflip - Flip data and/or dispersion coordinates in spectractioslit
sflip - Flip data and/or dispersion coordinates in spectraechelle
sflip - Flip data and/or dispersion coordinates in spectrahydra
sflip - Flip data and/or dispersion coordinates in spectraiids
sflip - Flip data and/or dispersion coordinates in spectrairs
sflip - Flip data and/or dispersion coordinates in spectrakpnocoude
sflip - Flip data and/or dispersion coordinates in spectrakpnoslit
sflip - Flip data and/or dispersion coordinates in spectralongslit
sflip - Flip data and/or dispersion coordinates in spectraspecred
sflip - Flip data ano/or dispersion coordinates in spectraonedspec
sflux - Combine flux data and fit a continuum, to use with fweight.ctools
sgidecode - Decode an SGI format metacode fileplot
sgikern - Simple graphics interface (SGI) graphics kernelplot
sgraph - Graph one or more image sections or lists.stplot
sgraph - Graph one or more image sections or lists.tbplot
sgscind - Search the guide star catalog index.gasp
sharp - Measure the sharpness of star images of WFPC1/2w_calib
shift - Shift an image by a specified number of pixels.fourier
shiftfind - Finds X,Y shifts in a cross-corelation image.dither
shiftfix - Basic image mosaicing routine; no sub-pixel replicationdimsum
shiftlines - Shift the lines of a list of N-D imagesimgeom
shiftlist - Make a rough list of shifts by pointing at imagesnlocal
shiftset - Combine two DIMSUM-produced mosaics with proper exposure weightingdimsum
show - Show an environment variablelanguage
show_models - Display the current model parameters.xspectral
showcap - Show and decode graphcap entriesplot
showfiles - Print a list of filenames used in a synphot expressionsynphot
showme - Show locations of sky bands and spectra on 2d imagesam
showspiral - Build and display spiral-search map.hrs
shutcor - Shutter correction from images of varying exposure timesobsutil
siaper - Plot the science instrument apertures of HST.stplot
side1_offset - Task to convert side 1 carrousel positions to side 2 positions.z_calib
sigmanorm - Renormalize mosaic image to uniform pixel-to-pixel rmsxdimsum
sigmanorm - Renormalize mosaic image to uniform pixel-to-pixel rmsxirred
sigmanorm - Utility for renormalizing mosaic to uniform pixel-to-pixel rmsdimsum
simbackgd - Two-dimensional HST background simulatorsimulators
simimg - Two-dimensional HST imaging instrument simulatorsimulators
simnoise - Two-dimensional HST noise simulatorsimulators
simspec - Two-dimensional HST spectral instrument simulatorsimulators
singlefit - Compare fixed-parameter model with data.xspectral
sinterp - Interpolate a table of x,y pairs to create a spectrumiids
sinterp - Interpolate a table of x,y pairs to create a spectrumirs
sinterp - Interpolate a table of x,y pairs to create a spectrumonedspec
sisclean - Plot frequency histogram of an SIS image file and apply anasca
sishist - Frequency histogram of an image created from an SIS event fileasca
sispi - Fills PI column of ASCA SIS event files.asca
sisrmg - Generate SIS instrument response matrixasca
skclose - Close the sky coordinate descriptorskywcs
skcopy - Copy a sky coordinate descriptorskywcs
skdecim - Open a sky coordinate descriptor using an image descriptorskywcs
skdecwcs - Open a sky coordinate descriptor usning an image or system nameskywcs
skdecwstr - Open a sky coordinate descriptor using a system nameskywcs
skenwcs - Encode a system name using a sky coordinate descriptorskywcs
skequatorial - Apply pm and transform between equatorial coordinate systemsskywcs
skiiprint - Print a sky coordinate descriptor summaryskywcs
skiiwrite - Write a sky coordinate descriptor summaryskywcs
skip - select fields in a text stream skipping some fieldsifocas
sklltran - Apply pm and transform between coordinates systemsskywcs
sksaveim - Update image header using sky coordinate descriptorskywcs
skset[ids] - Set a sky coordinate descriptor parameter valueskywcs
skstat[ids] - Get a sky coordinate descriptor parameter valueskywcs
skultran - Transform between coordinate systemsskywcs
sky - Sky processing by "crrej-like" algorithm.dither
sky - evaluate the sky for objects in a catalogifocas
sky2xy - Transform from sky to pixel coordinates using WCS keywordsheasarc
skyctran - Transform coordinates from one celestial wcs to anotherimcoords
skymap - Compute geometric transforms using the image celestial wcsimmatch
skypix - precess and convert between astronimical coordinate systemsxspatial
skytweak - Sky subtract 1D spectra after tweaking sky spectraonedspec
skytweak - Sky subtract 1D spectra after tweaking sky spectraspecred
skywcs - Celestial coordinates transformation packagextools
skyxymatch - Generate matched pixel lists using the image celestial wcsimmatch
slalib - Starlink positional astronomy librarymath
sleep - Hibernate for a specified timelanguage
slist - List spectrum header parametersonedspec
slist - List spectrum headerskpnocoude
slist - List spectrum headerskpnoslit
slist1d - List spectral header elementsiids
slist1d - List spectral header elementsirs
slitanglex - Measure the angle of long slit spectrum to AXIS1.focgeom
slitless - Extract a spectrum from a direct/GRISM image paircontrib
slitpic - Generate IRAF image of aperture slit masknproto
slot_fix - put time series slot no's, UT time & date into image headers (SRCstream)suntrans
smap - Compute the photocathode mapping function (i.e., thez_calib
smaperloc - Calibrate location of a small aperture (location phase III).hsp
smat - solve a set of simultaneous equations (s.p.)slalib
snrmap - determine the signal-to-noise of a given imagedetect
sol_ephem - compute p, camera and derotation angles for image headers (SRCstream)suntrans
solrot - Apply solar rotation and red shift velocity correctionsgongcor
sonpars - Edit the 2m ONIS sky fitting parametersxphotred
soproto - Prototype (temporary, contributed) taskssteward
spars - Edit the general sky fitting parametersxphotred
spcombine - Intercative combine taskctio
spearman - Compute the generalized Spearman's rho correlation.statistics
spec_polar - Tasks for reducing and analyzing FOS polarimetry observations.fos
specalign - Combine spectra such as FP-SPLIT Observations.ctools
specfit - Fitting spectra with non-linear chi-square minimizationspfitpkg
specflat - Create a mean residual flat field for spectra.scp
specfocus - Determine spectral focus and alignment variationsnlocal
specfocus - Determine spectral focus and alignment variationsnmisc
specfocus - Determine spectral focus and alignment variationsobsutil
specpars - Spectrograph instrument parameters for sptimeobsutil
specpars - spectrograph instrument parametersspectime
specplot - Scale, stack, and plot multiple spectraspecred
specplot - Stack and plot multiple spectraargus
specplot - Stack and plot multiple spectractioslit
specplot - Stack and plot multiple spectraechelle
specplot - Stack and plot multiple spectrahydra
specplot - Stack and plot multiple spectraiids
specplot - Stack and plot multiple spectrairs
specplot - Stack and plot multiple spectrakpnocoude
specplot - Stack and plot multiple spectrakpnoslit
specplot - Stack and plot multiple spectralongslit
specplot - Stack and plot multiple spectraonedspec
specred - Generic slit and fiber spectral reduction packageimred
specshift - Shift spectral dispersion coordinate systemsargus
specshift - Shift spectral dispersion coordinate systemsctioslit
specshift - Shift spectral dispersion coordinate systemsechelle
specshift - Shift spectral dispersion coordinate systemshydra
specshift - Shift spectral dispersion coordinate systemsiids
specshift - Shift spectral dispersion coordinate systemsirs
specshift - Shift spectral dispersion coordinate systemskpnocoude
specshift - Shift spectral dispersion coordinate systemskpnoslit
specshift - Shift spectral dispersion coordinate systemslongslit
specshift - Shift spectral dispersion coordinate systemsonedspec
specshift - Shift spectral dispersion coordinate systemsspecred
spectool - Spectrum display and analysis toolspt
spectra - Select and extract spectra from ADC CD-ROM catalogsadccdrom
specwcs - Discussion and description of the spectral image formatsonedspec
spfitpkg - Tasks for fitting spectra with non-linear chi-squarecontrib
sphinv - Spherical harmonic inverse transformmodel
sphlos - Convert from spherical to line of sight coordinatesmodel
sphspc - Generate a random spherical harmonic spectrummodel
spiopars - Pset for specifying columnor file names of input spectrum fieldsaspec
splist - List a 1D spectrum to an intensity vs. wavelength textfilenlocal
split - Split a large file into smaller segmentsutilities
splits - split merged catalog objects in an imageifocas
splot - Plot and analyze spectractioslit
splot - Plot and analyze spectrakpnocoude
splot - Plot and analyze spectrakpnoslit
splot - Preliminary spectral plot/analysisargus
splot - Preliminary spectral plot/analysisechelle
splot - Preliminary spectral plot/analysishydra
splot - Preliminary spectral plot/analysisiids
splot - Preliminary spectral plot/analysisirs
splot - Preliminary spectral plot/analysislongslit
splot - Preliminary spectral plot/analysisonedspec
splot - Preliminary spectral plot/analysisspecred
spotlist - Generate a list of calibration spot valuesdtoi
spp - SPP reference manualdoc
sprintf - Formatted print to a string bufferfmtio
spterrors - Error calculation parametersspt
spticfit - Curve fitting parametersspt
sptlabels - Labeling parametersspt
sptlines - Line parametersspt
sptmodel - Line profile fitting parametersspt
sptsigclip - Sigma clipping parametersspt
sptstack - Stacking parametersspt
sqaplot - ASCA SIS quick analysis ftool ***asca
src2pha - Creates a PHA file from specified extensions in an RDF src filerosat
src_cnts - calculate number of counts due to sources in QPOE fileeintools
srcinten - compute the count rate of a given source regionxspatial
sregister - Register 1-D or 2-D images using the image celestial wcsimmatch
sscan - Scan a string bufferfmtio
st2rpsf - Reads STWFITS file and writes an OGIP RPSF filecaltools
stack - Stack images to form a new image with one more dimension.imgtools
standard - Identify standard stars to be used in sensitivity calcctioslit
standard - Identify standard stars to be used in sensitivity calcechelle
standard - Identify standard stars to be used in sensitivity calciids
standard - Identify standard stars to be used in sensitivity calcirs
standard - Identify standard stars to be used in sensitivity calckpnocoude
standard - Identify standard stars to be used in sensitivity calckpnoslit
standard - Identify standard stars to be used in sensitivity calclongslit
standard - Identify standard stars to be used in sensitivity calconedspec
standard - Tabuluate standard star counts and fluxesspecred
standards - IRAF programming standardsdoc
starfind - Automatically detect stellar objects in a list of imagesimcoords
starfocus - Determine direct focus variations from stellar imagesnmisc
starfocus - Determine direct focus variations from stellar imagesobsutil
starlist - Make an artificial star listartdata
statistics - Statistical analysis software.analysis
statspec - Compute statistical error from object and sky spectractio
statstrm - compute statistics from an input text streamifocas
stcal - Stores one or more calibration files in the Caldbcaltools
stdgraph - Plot metacode on the standard graphics deviceplot
stdphot - Create a generic standard star observations filexphotred
stdplot - Plot metacode on the standard plotter deviceplot
stdsets - Group generic standard star images by filterxphotred
step - Take an image and divide the data between different groups.sobsolete
stepdisp - tv images of a list of 3-plane imagesqcgong
stfhistory - Add history records to an STSDAS image header.headers
stfov - Plot HST science instrument apertures over an image.stplot
stgindx - Copy the catalog index to an STSDAS table.gasp
stis - Tasks for calibrating STIS data.hst_calib
stphot - Photometry Manual for PHOTRED (in progress)manuals
stplot - General plotting utilities.graphics
strcat - String concatentationfmtio
strcpy - String copyfmtio
strdic - Look a string up in a dictionaryfmtio
streakflat - Generate WF/PC flat field from streak exposures of the Earth.w_calib
strentab - Simplified entabxtools
streq - Compare strings for equalityfmtio
strfits - Convert FITS files to tables or to GEIS filesfitsio
strge - Is string A greater than or equal to string Bfmtio
strgt - Is string A greater than string Bfmtio
stridx - First occurrence of a character in a stringfmtio
strings - String manipulation routineslanguage
strldx - Last occurrence of a character in a stringfmtio
strle - Is string A less than or equal to string Bfmtio
strlen - Length of a stringfmtio
strlt - Is string A less than string Bfmtio
strlwr - Convert string to lower casefmtio
strmatch - Search a string for a patternfmtio
strncmp - Compare the first N characters of two stringsfmtio
strne - Is string A not equal to string Bfmtio
stropen - Open a character string as a filefio
strsearch - Fast string search, no metacharactersfmtio
strt - Straighten a curved spectrumsam
strtbl - Print a list of strings in a tablefmtio
structure - I.4 Tutorial #1 IRAF Structure (irafintro)index
strupr - Convert a string to upper casefmtio
stty - Set/show terminal characteristicslanguage
stw2pha - Converts stw PHA file to OGIP FITS formatcaltools
stwfits - Convert tables and/or GEIS files to FITS filesfitsio
subet - remove the E-terms from a pre IAU 1976 catalog positionslalib
subsets - Description of CCD subsetsccdred
subsets - Description of CCD subsetsquad
subsets - Description of CCD subsetsquadred
subsets - Description of CCD subsetsxccdred
subsets - Substract pairs in strings of spectraiids
subsets - Substract pairs in strings of spectrairs
subsky - Subtract background flux from target+background flux.timeseries
substar - Subtract the fitted stars from the original imagedaophot
sums - Generate sums of object and sky spectra by apertureiids
sums - Generate sums of object and sky spectra by apertureirs
sun2vax - Convert GEIS images from Sun to Vax binary formatconvfile
sunmail - Help page for the UNIX/SUN mailermanuals
sunpipe - template script for automated processingsuntrans
sunsetup - Setup a remote node to use a local sun for image displaynlocal
suntoiraf - Convert Sun rasters into IRAF imagesproto
suntrans - Spherical Harmonic Transform tasks (ww)grasp
supgal - convert deVaucouleurs supergalactic to IAU 1958 galactic coordinatesslalib
surface - Make a surface plot of an imageplot
surfit - Fit a surface, z=f(x,y), to a set of x, y, z pointsutilities
surfit - IRAF image surface fitting packagemath
surfphot - Galaxy isophotal analysis packagenoao
surfview - Make a 3-D vector list of an image for use with viewwldnlocal
survival - Provide background & overview of survival analysis.statistics
svd - compute the SVD factorization of a matrixslalib
svdcov - compute the covariance matrix from the SVD factorizationslalib
svdsol - solve a set of simultaneous equations using SVD factorizationslalib
syndico - Make dicomed print of daily grams 18 cm across.vtel
syndico - Make dicomed print of daily grams 18 cm across.vtelold
synftach - Generate synthetic response of Fourier Tachmodel
synphot - Tasks for synthetic photometry and modelling instrument response.hst_calib
sys_mtime - Mark the time (for timing programs)etc
sys_ptime - Print the elapsed time since last marketc
syserr - Post a system error and take an error actionetc
system - VII.I Using the Computers at CTIO (appendix)index
tabfilter - Generate time filters based on engineering valuesxproto
tabim - Copy a table column to an image.ttools
tabkey - Copy a table element to an image or table header keyword.ttools
table - Format a list of words into a tablelists
tabpar - Transfer a table element to an IRAF parameter.ttools
tabplot - Graph one or more table filesxplot
tacarrousel - Perform target acquisition carrousel calibration.z_calib
tacount - Calculate observed count rate for target acquisition.hrs
tadiodepos - Find a target acquistion image on the main diode array.z_calib
taextract - Copy an array entry to a column of scalars in another table.ttools
taflat - Calculate target acquisition aperture flat field.hsp
tail - Print the last few lines of a filesystem
tainsert - Copy a column of scalars to an array entry in another table.ttools
tamode - Analyze a target acquisition field map.z_calib
tape - I.8 Common Problems: Their Cause and Cure (irafintro)index
taperedge - Apply a cosine bell or linear taper to image edges.fourier
tarestore - Restore mode I target acquisition images.sobsolete
targets - Find target coordinates based on guide stars.gasp
task - Define a new tasklanguage
tasks - I.3 A Quick View of IRAF (irafintro)index
tastis - Analyze STIS target acquisition images.stis
taucal - TAURUS Fabry-Perot phase calibration package [down]rgo
tbcalc - Do arithmetic on a list of apphot/daophot tables databasesptools
tbconcat - Concatenate a list of apphot/daophot tables databasesptools
tbdump - Print selected columns of a list of tables databasesptools
tbrenumber - Renumber a list of apphot/daophot tables databasesptools
tcalc - Perform arithmetic operations on table columns.ttools
tchcol - Change column name, print format, or units.ttools
tcheck - Check STSDAS table element values.ttools
tchsize - Change allocated sizes of various sections of a table.ttools
tchtype - Change table type (e.g. from column to row ordered).sobsolete
tconvert - Convert table format between Vax and Sun binary formatconvfile
tcopy - Tape to tape copy routine.vtel
tcopy - Tape to tape copy routine.vtelold
tcreate - Create a STSDAS table from an ASCII descriptor table.ttools
tdiffer - Form a table which is the difference of two tables.ttools
tdump - Dump the contents of a table to an ASCII file.ttools
tee - Tee the standard output into a filesystem
telluric - Remove telluric features from 1D spectraonedspec
telnet - VII.I Using the Computers at CTIO (appendix)index
temden - Determine electron temperature or density from diagnostic rationebular
templates - I.3 A Quick View of IRAF (irafintro)index
templates - I.6 Tutorial #3 Handling Images (irafintro)index
testfunc - Generate analytic form test data (ASCII).sobsolete
testimx - Generate FOC test data images with RSDP-like headers.focutility
tests - make a series of test observationsccdacq
tevalfit - Evaluate a surface fit on positions in an ASCII file.focgeom
tex - VII.I Using the Computers at CTIO (appendix)index
texpand - Expand tables according to a set of rules.ttools
text2mask - Convert text description to pixel masknmisc
text2mask - Convert text description to pixel maskproto
tgausspars - Pset with parameters for two-dim Gaussian function.fitting
thedit - Edit or print table header keywords.ttools
thistogram - Make a histogram of a column in a table.ttools
thselect - Select tables satisfying an expression; print keywords.ttools
tiimage - Insert images into rows of a 3-D table.ttools
timcor - calculate ROSAT timing corrections ( SC/UT/BARYCENTER)xtiming
time - Print the current timelanguage
time - Timing specific packageftools
time2sec - Convert absolute time to a time offsettime
timeconv - Convert from satellite to barycentric (use with caution on SUN)asca
timeser_file - description of time series files (help file only-no task)suntrans
timplot - strip plot of table format dataxtiming
timprint - display timing table dataxtiming
timsort - create a time-sorted qpoe file for timing analysisxtiming
tinfo - Display table size information.ttools
tintegrate - Numerically integrate one column with respect to another.ttools
titable - Insert 2-D tables into rows of a 3-D table.ttools
tjoin - Perform a relational join of two tables.ttools
tlcol - List column information for a table.ttools
tlinear - Use linear regression to fit one or two table columns.ttools
tmask - Do fit to peak positions to find frame distortion.taucal
tmatch - Find closest match between rows in two tablesttools
tmerge - Either merge or append tables.ttools
tokens - Break a file up into a stream of tokenslists
tomultispec - Create an OIF MULTISPEC file for data from FITS BINTABLEs.ctools
topolar - Convert real & imaginary parts to amplitude & phase.fourier
totmag - evaluate the "total" magnitudes for split objectsifocas
tp2s - convert tangent plane to spherical coordinates (s.p.)slalib
tp2v - convert tangent plane coordinates to direction cosines (s.p.)slalib
tprecess - Precess images, tables, or lists of coordinates.tools
tprint - Print tables--both headers and data.ttools
tproduct - Form the Cartesian product of two tables.ttools
tproject - Create new table from selected columns in a table.ttools
tps2c - compute the spherical coordinates of the tangent point (s.p.)slalib
tpv2c - compute the direction cosines of the tangent point (s.p.)slalib
tquery - Create a new table from selected rows and columns in a table.ttools
trace - Map out the distortion of a curved spectumsam
transform - Transform longslit images to user coordinateslongslit
translit - Replace or delete specified characters in a fileutilities
transm - Calculate the transmission of fibres in a framewyffos
trebin - Resample a table to uniform spacing.ttools
trename - Rename table filestobsolete
trendr - Fit and remove a 2nd order polynomial from the solar diskgongcor
trendt - Fit a 2nd order polynomial to the solar diskgongcor
ts_make - time transpose the mode coefficients from small l files (SRCstream)suntrans
ts_mean - make the means of the registered images into an alternate l=0suntrans
ts_merge - merge time series from several sites into one time streammerge
ts_stat - histogram, mean and standard dev. of time series mode coefsqasun
tsclean - Clean time series of deviant pixels.grtools
tscopy - Copy row/column subsets of tables using selectors.ttools
tselect - Create a new table from selected rows of a table.ttools
tsextract - Extract a portion of a time series.grtools
tsleep - Delay process executionetc
tstat - Get mean, standard deviation, min, and max for a column.ttools
ttranspose - Transpose or flip a table.ttools
tty - Device independent terminal controlsys
tunits - Convert table column from one set of units to anotherttools
tvimcontour - Load an image & overlay a contour map into the display windowxplot
tvlabel - Display an image with WCS cursor readback in hh:mm:ss, dd:mm:ssxplot
tvmark - Mark objects on the image displaytv
tvproj - Display an image with x and y projectionsxplot
twobbpars - Pset with parameters for two-black-body function.fitting
twodpolyfit - Two dimensional polynomial fit of temperature and epoch.hsp
twodspec - Two dimensional spectral red & analysis package [up]noao
twosampt - Determine if two sets of data are from the same population.statistics
txcalc - Do arithmetic on a list of apphot/daophot text databasesptools
txconcat - Concatenate a list of apphot/daophot text databasesptools
txdump - Print selected columns of a list of apphot/daophot text databasesptools
txdump - Select fields from the center task output text fileirred
txrenumber - Renumber a list of apphot/daophot text databasesptools
txtbin - Convert an IRAF text file to a binary filedataio
type - Type a text file on the standard outputsystem
ucase - Convert a file to upper caseutilities
uchcoord - Update plate scale, shift, and rotation of WFPC2 images.wfpc
uchscale - Update plate scales of WFPC2 (and WFPC) images.wfpc
ucor - transforms three- or six-phase intensity images intovelcal
udcif - Adds a calibration file to a CIFcaltools
ue2el - convert universal elements into heliocentric osculating elementsslalib
ue2pv - compute heliocentric position and velocity from universal formslalib
ues - Quick-look UES data reductionquickie
uniqfile - Give a file a unique name prior to archiving.tools
uniqid - Create a unique character string identifier.tools
uniqname - Create a unique file name for archiving.tools
uniqtab - Give all the files in an STSDAS table unique names.tools
unique - Delete redundant elements from a listlists
unlearn - I.3 A Quick View of IRAF (irafintro)index
unlearn - Restore the default parameters for a task or packagelanguage
unload - I.3 A Quick View of IRAF (irafintro)index
unpcd - remove pincushion/barrel distortion from distorted coordinatesslalib
unprotect - Remove delete protection from a filesystem
unsplit - remove split objects and reset object flags in a catalogifocas
unstep - Consolidate several groups in an image into one group.sobsolete
unwrap - Remove effects of data wraparound on continuum scans.vtel
unwrap - Remove effects of data wraparound on continuum scans.vtelold
unwrap - Remove the 'wrap' from data that has exceeded the internalfos
update - Update a task's parameters (flush to disk)language
upimgrdf - convert a list of IRAF image files to RDF compatible formatxdataio
upqpoerdf - convert a list of QPOE files to RDF compatible formatxdataio
upreffile - Update calibration reference files names in image headersheaders
urand - Uniform random number generatoretc
urand - Uniform random number generatorutilities
userpars - Pset with parameters for user-defined function.fitting
using_detect - describes the tasks available in the detect packagedetect
using_spectral - for more information about the spectral packagexspectral
using_timcor - description of ROSAT timing correction taskstimcor
using_xplot - guide to plotting tasks available to display Xray dataxplot
utc - ROSAT spacecraft clock to universal time data point descriptiontimcor
utilities - Miscellaneous utilities packageclpackage
utntrp - Expand UT time.ephem
v2tp - convert direction cosines to tangent plane coordinates (s.p.)slalib
vac2air - Convert wavelength scales from vacuum to air.ctools
vartst - non-parametric statistical tests for source variabilityxtiming
vax2sun - Convert GEIS images from Vax to Sun binary formatconvfile
vcor - transforms three-phase intensity images into phase velocity,velcal
vdv - convert the scale production of two 3-vectors (s.p.)slalib
vecfea - Register using common features of vector data.registration
vel_qual - velocity quality assurance parameter calculationqasun
velcal - GONG Instrument Calibration tasks (rt)grasp
velfit - Determine correction from ephemeris to calibrated velocitiesephem
velocity - Generate velocity maps from a cubefabry
velvect - Plot representation of a velocity fieldplot
vfit - Determine correction from ephemeris to calibrated velocitiesephem
vi - VII.I Using the Computers at CTIO (appendix)index
vigcompute - Compute the HRS vignetting function.z_calib
vigdata - apply vignetting correction to image dataxspatial
vigfit - Smooth HRS vignetting function.z_calib
vigmodel - apply vignetting effect to an image modelxspatial
vla - Spectral image reduction for VLA data.contrib
vlascor - calibrates oscillation phase velocity with laser phasevelcal
vmi - transforms three-phase intensity images into phase velocity,velcal
vmi2pmi - converts velocity, modulation, intensity intovelcal
vn - normalize a 3-vector and compute the modulus (s.p.)slalib
vtblink - Blink daily grams on the IIS to check for registration.vtel
vtblink - Blink daily grams on the IIS to check for registration.vtelold
vtel - NSO Solar vacuum telescope image reductionsimred
vtel - Vacuum telescope reductionsnso
vtelold - Vacuum telescope reductions for old magnetographnso
vtexamine - Examine a vacuum telescope tape, print headers and profile.vtel
vtexamine - Examine a vacuum telescope tape, print headers and profile.vtelold
vuespec - Interactive task for fitting model components to spectraaspec
wait - Wait for all background jobs to completelanguage
warmpix - Flag an/or correct hot pixels in WFPC2 images.wfpc
warmup - Calculate dark signal as a function of warmup time.hsp
wavecal - Update science header with MSM offset value from wavecal.stis
waveoff - Determine offset between calibrated wavelength and WAVE spectra.hrs
waveoffset - Compute wavelength offset between two spectra.fos
wcardimage - Convert text files to cardimage filesdataio
wconvolve - Convolve power spectrum with window function.grtools
wcsbug - Logical/physical coordinate conversion incorrectxray
wcscoords - use WCS to convert between IRAF coordinate systems (logical,physical)xspatial
wcscopy - Copy the wcs from one image to anotherimmatch
wcsctran - Transform coordinates from one iraf image wcs to anotherimcoords
wcsedit - Edit an image wcs parameterimcoords
wcsfix - Fix a non-standard WCSxastcat
wcslab - Overlay a displayed image with a world coordinate gridtv
wcsmap - Compute geometric transforms using the image wcsimmatch
wcsqpedit - Modify the WCS parameters in a QPOE file.xproto
wcsxymatch - Generate matched pixel lists using the image wcsimmatch
wdecon - Deconvolve window from power spectrum using FFT.grtools
wdisplay - Display the current GOES weather picturesnlocal
weather - How to access weather pictures and forecastsnlocal
weights - insert weights in image or time series filesmerge
wfits - Convert a list of IRAF images into FITS image datadataio
wfits - I.5 Tutorial #2 Reading and Writing Data to Tape (irafintro)index
wfits - VII.I Using the Computers at CTIO (appendix)index
wfixup - Interpolate over bad columns in a WF/PC frame.wfpc
wfpc - Tasks for calibrating WFPC and WFPC-2 data.hst_calib
wfpc2color - Transform QDWFPC2 instrumental magnitudes to standard colorsmxtools
whole - Fix header information to extract the whole slitsam
widstape - Convert ONEDSPEC spectra to IDSOUT text formatmtlocal
width - Esimate power spectrum line width mode frequency and l.grtools
wiener - Deconvolve a 2-dimensional image using a noniterativerestore
windecon - Deconvolve window from power spectrum using brute force.grtools
window - Adjust the contrast and dc offset of the current frameiis
window_stat - window statistics for individual site daysqasun
wlmcalc - calculates spurious modulation (i.e. wide-band) correction imagevelcal
wlmcor - corrects oscillation image for spurious (i.e. wide-band) effectsvelcal
wmef - Create MEF file from data, variance and DQ imagesgemtools
wmosaic - Mosaic the four WF/PC frames into one image.wfpc
woffsets - Find the wavelength offsets using cross-correlation.z_calib
words - Break a file up into a stream of wordslists
wphot - Measure magnitudes for a list of stars with weightingapphot
wregister - Register 1-D or 2-D images using the image wcsimmatch
write - I.5 Tutorial #2 Reading and Writing Data to Tape (irafintro)index
write - Write a binary block of data to a filefio
writevt - Write an IRAF image to tape in vacuum telescope format.vtel
writevt - Write an IRAF image to tape in vacuum telescope format.vtelold
writing - I.8 Common Problems: Their Cause and Cure (irafintro)index
wshift - Find wavelength offset from the spectral line template.z_calib
wspectext - Convert 1D image spectra to ascii text spectraonedspec
wstatistics - Compute & print WF/PC image pixel statistics.wfpc
wtextimage - Convert an IRAF image to a text filedataio
wyf_red - CCD process and extract spectra from a wyffos framewyffos
wyffos - WYFFOS data reduction [up]rgo
wyfgeom - Define the order of fibres and direction of dispersionwyffos
x1d - Extract a collection of 1-D spectra from a calibrated 2-Dstis
x2d - Perform 2-D rectification of calibrated STIS images.stis
xapphot - Experimental aperture photometry packagexdwred
xapropos - List all tasks related to a given subjectxray
xastcat - Experimental catalog access packagexdwred
xbox - Quick solution of mask alignment (using boxes)ucsclris
xc - Compile and/or link a programsoftools
xcmap - Calculate a mapping function using crosscorrelationgongcor
xdataio - Tasks to convert data to/from FITS formatxray
xdimsum - Experimental dimsum packagexdwred
xdimtogf - Convert a GEIS file with xtra dimension plus a table to GEISfitsio
xdisplay - Load an Xray image into the display windowxplot
xdshifts - Compute shifts using image display and centroiding techniquesxdimsum
xdshifts - Compute shifts using image display and centroiding techniquesxirred
xexamine - Examine a Qpoe using the image display and WCS coordinatesxplot
xexamine_r - Examine a Qpoe using the image display and WCS coordinatesxproto
xfirstpass - Driver script for first pass processing stepsdimsum
xfirstpass - Driver script for first pass processing stepsxdimsum
xfirstpass - Driver script for first pass processing stepsxirred
xfshifts - Compute shifts using star finding and centroiding techniquesxdimsum
xfshifts - Compute shifts using star finding and centroiding techniquesxirred
xhadd - add an X-ray history record to an image or qpoeximages
xhda - Build input list for EPHVEL.ephem
ximages - Additions to IRAF images packagexray
ximtool - Invoke SAOIMAGE for use with IRAF/XDISPLAYxplot
xirred - Experimental Deep Wide IR reduction packagexdwred
xlist - Utility for generating file lists used by subloc and slmdimsum
xmaskpass - Driver script for mask pass processing stepsxdimsum
xmaskpass - Driver script for mask pass processing stepsxirred
xmaskpass - Driver script for second pass processing steps (with masking)dimsum
xmosaic - Driver sript for first pass and mask pass processing stepsxdimsum
xmosaic - Driver sript for first pass and mask pass processing stepsxirred
xmshifts - Compute shifts using star finding and list matching techniquesxdimsum
xmshifts - Compute shifts using star finding and list matching techniquesxirred
xnregistar - Mosaic the images using sub-pixel replication and maskingxdimsum
xnregistar - Mosaic the images using sub-pixel replication and maskingxirred
xnzap - Remove cosmis rays from images using average filteringxirred
xnzap - Remove cosmis rays from images using averaging filterxdimsum
xobsolete - Tasks that will soon be removed from the systemxray
xphotcal - Experimental photometric calibration packagexdwred
xphotred - Experimental Deep Wide photometric calibration packagexdwred
xplot - Plotting routines for XRAY dataxray
xproto - Crude tasks, currently under developmentxray
xregister - Register 1-D or 2-D images using x-correlation techniquesimmatch
xregister - Register 1-D pr 2-D images using x-correlation techniquesnmisc
xrfits - read a fits file into IRAF IMAGE (imh) or TABLE (tab) formatxdataio
xrshifts - Compute shifts using x-correlation techniquesxdimsum
xrshifts - Compute shifts using x-correlation techniquesxirred
xrv - GUI Version of the RV Packageguiapps
xrvf - Examine the RVF to determine FSR and gap.taucal
xslm - Sky subtract images using a local minmax combined sky, w/ or w/o maskingdimsum
xslm - Sky subtract images using running meanxdimsum
xslm - Sky subtract images using running meanxirred
xspatial - X-ray spatial analysis packagexray
xspec_interface - for information on how to convert PROS spectral dataxspectral
xspectral - X-ray spectral analysis packagexray
xt_csum - Sum of image columns using column access procedurextools
xt_csumb - Buffered sum of image columns using column access procedurextools
xt_lsum - Sum of image linesxtools
xt_lsumb - Buffered sum of image lines for moving sumsxtools
xtalkcor - Apply crosstalk correctionsmscred
xtalkcor - Apply crosstalk correctionsmscred
xtcoeff - Compute crosstalk coefficientsmscred
xtcoeff - Compute crosstalk coefficientsmscred
xte - X-ray timing explorer packageftools
xtiming - X-ray timing analysis packagexray
xtop - Convert a complex image to Power/Phase.grtools
xwhen - Post an exception handleretc
xy2rd - Translate a 2-D image pixel coordinate to right ascensionimgtools
xy2sky - Transform from pixel to sky coordinates using WCS keywordsheasarc
xy2xy - apply a computed linear model to a set of [x,y]slalib
xyacc - Build an SPP language parsersoftools
xyeq - Get (ra,dec) from a table of (x,y) given the pltsol coeff.gasp
xyxymatch - Match pixel coordinate listsimmatch
xyztable - Interpolate table values, writing results to a table.imgtools
xyztoim - Interpolate table values, writing results to an image.imgtools
xzap - Remove cosmic rays from images using median filteringxdimsum
xzap - Remove cosmic rays from images using median filteringxirred
ybase - Compute Y-base for aperture centers.y_calib
yddintplot - Interactively examine dead diode locations.fos
yfind - Find Y-deflections of HRS spectral orders.z_calib
yfit - Compute Y-deflection calibration coefficients.z_calib
ymkmu - Place wavelength information into headers.fos
ypeakup - Analyse ACQ/PEAK observations.fos
yratio - Take ratios between ACCUM observation bins.fos
zd - convert hour angle and declination to zenith distanceslalib
zerocombine - Combine and process mosaic zero level exposuresmscred
zerocombine - Combine and process mosaic zero level exposuresmscred
zerocombine - Combine and process mosaic zero level exposuresmultampccd
zerocombine - Combine and process mosaic zero level exposuresmultampccd
zerocombine - Combine and process zero level imagesccdred
zerocombine - Combine and process zero level imagesquad
zerocombine - Combine and process zero level imagesquadred
zerocombine - Combine and process zero level imagesxccdred
zeropt - Enter the zero point constants into a cube headerfabry
zeros - make a series of zero observationsccdacq
zflatfield - Determine a flat field.z_calib
zones - Determine electron temps & densities in 3-zone nebulanebular
zoom - Zoom in on the image (change magnification)iis
zwavecal - Create new wavelength dispersion based on WAVE spectra.hrs




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