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Last Post

Problem with graphicsStarted by:darbelaez, 11/23/2017 10:24PM
Hi,

I recently upgraded my system to ubuntu
16.04 64-bit and installed iraf. The
problem is that when I make a plot, the
graphic is completely illegible, it does
not show the usual green window and the
black background, but a gray background.
I tried...

1306

By: fitz

11/27/2017 05:39PM

Xgterm can't start up ds9 and cl comm...Started by:anthonyvun, 10/27/2017 03:14AM
Mac Sierra
Installed iraf in home, ds9 in
Applications
At xgterm, entered "ds9 &" - it
says : bash: ds9: command not found
and when entered cl - it says: task `cl'
has no param file. Fatal
startup error. CL dies.

Anyone have any idea?

7402

By: anthonyvun

10/31/2017 02:17AM

Fringing problem and b_niter paramete...Started by:uros, 08/29/2017 05:45AM
Hi,

I am working with low S/N spectra.
Because of this I am trying to minimise
influence of the fringing. Did exist
some specific way how to deal with my
flat fields to remove effect of the
fringing on my data?
At this moment for flat fielding I am
...

1155

By: uros

08/29/2017 05:45AM

problem with REIDENTIFY - no features...Started by:ovince, 06/23/2017 02:49PM
Hi All,

I am learning spectral reduction,
calibration etc., so I started with
tutorial described in ccd2.ps and
spectra.ps. All went fine but now I have
problem to reidentify features in 1D
spectrum using a reference one. This is
the actual output m...

1546

By: ovince

07/13/2017 08:26AM

Unresolved point sources with gallistStarted by:rachanab, 07/07/2017 11:26AM
I am making fake sources for my
completeness simulations and I am using
gallist + mkobjects to do this. I can
get a distribution for my sources using
parameters like x and y coordinates,
magnitudes, profile types, half-flux
radii, axial ratios, position...

1125

By: rachanab

07/07/2017 11:26AM

installing MIKE-mtools package on ubuntuStarted by:fitz, 06/16/2017 03:28PM
[color=red][Moderator's Note: Forwarded
from story submission][/color]

Hi,
I am trying to install the iraf mtools
package (designed by Jack Baldwin for
the reduction of Magellan MIKE spectra)
on a Dell laptop running ubuntu 14.04.
I followed Phil ...

1219

By: fitz

06/16/2017 03:28PM

composite spectrumStarted by:uros, 06/07/2017 08:13AM
Hi :)

first sorry if this question already has
been asked, I try to find did someone
ask this before but without success.

I am trying to create composite 1D
galaxy spectrum from 4 single 1D spectra
(different galaxies).
I know how to shift all sp...

1230

By: fitz

06/08/2017 01:53PM

Problem DarkcombineStarted by:Lianne, 11/24/2008 09:27PM
Hello,

I'm trying to combine a set of 15
darks. I have written them to a text
file called dark.list. I get this error
when I used the darkcombine command.

ccdred> darkcombine @dark.list
)arning: Cannot open image (Dark001.imh
)arning: Cannot op...

9085

By: robsteele49

05/13/2017 05:03AM

Setting the image center in msctpeakStarted by:paco, 05/11/2017 08:51PM
Hello,

I am using msctpeak for tweaking the WCS
on various images---some from mosaic
detectors, others from single-chips.
msctpeak is really convenient because of
its nice interactive features (vs using
ccfind and ccmap, for instance).

My problem...

913

By: paco

05/11/2017 08:51PM

problem with interactive fitparamStarted by:fitz, 04/05/2017 04:10PM
[color=red][Moderator's Note: forwarded
from story submission][/color]

When I try to delete a point in fitting
photometry interactively in fitparams, I
put the cursor over the point and hit
the "d" key. The cursor jumps to another
star and deletes i...

1341

By: Gaba_p

05/11/2017 05:35PM

RMS value seem strange in telluricStarted by:fitz, 07/29/2016 03:33PM
[color=red][Moderator's Note: Posted
from submitted story on behalf of
user.][/color]

I am analyzing high-resolution
near-infrared spectra retrived with our
original spectrograph WINERED installed
on a 1.3-m telescope at Kyoto Sangyo
University.

...

1462

By: valdes

04/25/2017 10:22PM

Wavelength units on NIR spectraStarted by:massey, 04/10/2017 09:58PM
I have some NIR spectra taken with FIRE
on Magellan that I reduced with their
IDL pipeline. When I splot the spectra,
they look fine, and the units on the X
axis are Angstroms--all well and good!
But, when I wspect the spectra to a text
file, the uni-...

1140

By: valdes

04/25/2017 10:14PM

weighting scheme in the daophot psf taskStarted by:juge, 04/13/2017 09:41AM
Hi guys,

I use the psf task in daophot package to
build semi-emperical PSFs
(Gaussians+residuals) for my images. One
thing that puzzles me is that when the
gain parameter is arbitrarily adjusted,
output of the psf task does not change
at all. If the...

1398

By: valdes

04/25/2017 10:04PM

IRAF spectra errorStarted by:uros, 03/12/2017 11:11PM
Hi,

please can someone help me to understand
how IRAF calculate errors of my
extracted spectrum.

After I finish with spectra extraction
in IRAF at the end I will get wavelength
and flux calibrated spectra. This
spectra is fits file where I have 4 ...

1789

By: fitz

03/13/2017 03:38AM

FITPARAMSStarted by:rdzudzar, 02/13/2017 07:51AM
Hi,

I'm new to iraf and have problem for
which i have no idea what is wrong. I
made configuration file, observational
file and standard star catalog file. I'm
getting :

"#UNMATCHED OBJECTS
ERROR: segmentation violation"

I check 10 times name...

1064

By: rdzudzar

02/14/2017 11:36AM

fconvolveStarted by:rachanab, 02/10/2017 01:36PM
Hi,

I am trying to convolve my image with a
psf and I am struggling with the
following two things:

1) It takes a really long time to time
to get the output file (~20mins).
2) My input fits file has 0 values
outside the field of view, but once
thi...

884

By: fitz

02/10/2017 04:04PM

imfort under 64-bitStarted by:massey, 02/06/2017 01:13PM
Hi, Mike et al.---

For several years my collaborator has
been reducing our Magellan MagE data
using Jack Baldwin's old "mtools" IRAF
package which relies heavily on imfort.
My collaborator has been running this on
an ancient 32-bit laptop, and obvio...

1839

By: massey

02/07/2017 02:49PM

SAOImage DS9 version 7.5 is now avail...Started by:joye, 12/29/2016 05:54PM
SAOImage DS9 version 7.5 is now
available for download at
http://ds9.si.edu/site/Download.html

New features

New Preference file support- allows
multiple preference files base on
version number
Improved CIAO regions file
compatibility
Improved FI...

1333

By: joye

12/29/2016 05:54PM

zerocombine problemStarted by:edmeades, 10/24/2007 05:29PM
I have a user who is trying to use
zerocombine, but it doesn't seem to want
to open the images.

When she or I run the zerocombine task,
this is what we get:
zerocombine
List of zero level images to combine:
ccd0009c1.fits,ccd0008c1.fits
ERROR: No ima...

22542

By: jbkikwaya

12/07/2016 10:29PM

Hedit colon separated coordinatesStarted by:dmag, 12/02/2016 05:22PM
I am trying to update the header of my
fits file with coordinates and time of
the observation and i want them in the
'hh:mm:ss' format. I use the hedit
command as follows

hedit test.fits RA '10:17:58' add+

but iraf convert it into a decimal
format...

825

By: fitz

12/06/2016 09:00AM

how to interpolate a spectrum from an...Started by:paulartcoelho, 10/24/2016 06:08PM
I've been using sinterp and rspectext to
convert a spectrum in ascii format into
a fits one for more time that i care to
remember. Lately, several times I wanted
the output FITS file to have a
log-linear instead of linear wavelength
dispersion. As far a...

1292

By: fitz

11/14/2016 05:54PM

Format of the "id" files from the ide...Started by:Mike Potter, 11/10/2016 04:12PM
In the "id" file that is output by the
identify task (ex: kpnoslit.identify)
there is a table that has the pixel and
wavelength values entered by the user
during line identification. There is
another wavelength value shown as well,
which I'm assuming i...

740

By: fitz

11/10/2016 04:58PM

Splot deb lending with Gaussians - Ou...Started by:cew24, 10/03/2016 07:57PM
Deblending spectral line with SPLOT and
the "d" command, followed by using the
"f" to read in a linelist.txt file and a
"g" for the fitting

The fits are done, the center, cont.,
flux, eqw. core, gfwhm are output to
splot.log file when on exits the d...

1334

By: valdes

10/12/2016 04:57PM

segmentation violation in fitparamsStarted by:massey, 08/22/2016 07:14PM
I'm using fitparams,using 2.16.1 EXPORT
on a Mac and I'm getting a segmentation
violation. Here are my parameters:
observat= standobs List of
observations files
catalogs= nlandolt List of
standard catalog files
config = ...

1345

By: massey

08/22/2016 08:18PM

ERROR: MWCS: dimension mismatch (mw_o...Started by:ongole.geeth, 07/18/2016 11:08AM
Im trying to use the task : splot under
specred in imred in IRAF Revision 2.16.1
on IUE data downloaded from MAST archive
of STScI.When I try to open those
spectrums with splot it gives me a error
saying

specred> splot lwr06483mxlo_vo.fits
ERROR: ...

1506

By: fitz

07/22/2016 05:40PM

wspectext to linear wavelengthsStarted by:fitz, 07/09/2016 03:09AM
.[color=red][Moderator's Note: Forwarded
from submitted story on behalf of
user.][/color]

I have many (1400) spectra with
logarithmic binning in wavelength, how
do I make a text file
with wavelengths in Angstroms rather
than log(Angstroms)?

thank...

821

By: fitz

07/09/2016 03:28AM

mscred.mscarith problem reportStarted by:Guest, 03/01/2006 09:20PM
Hello,

There's a typo in mscred.mscarith.cl
which prevents msarith from
running in pyraf.

line# 25 in msarith.cl should be changed
from

int nop1, nop2, nresults, next1,
next2, nexts, n

to

int nop1, nop2, nresult, next1,
next2, nexts, n

The e...

4637

By: fitz

07/09/2016 03:07AM

Overscan regionsStarted by:rrbernardi, 06/27/2016 12:33AM
I am working with a image
(1:1026,1:4645) which uses two vertical
regions ([1:27,1:4616] and
[1180:1206,1:4616]) and one horizontal
region [27:1152,4617:4645] as overscan.
Can I include two overscan regions
(vertical) in BIASSEC parameter? What is
the c...

746

By: rrbernardi

06/27/2016 12:33AM

FOCAS package installStarted by:atorres, 06/15/2016 04:38PM
Hi,

I use IRAF V2.16 to analyse images and
have not been able to find where can I
download FOCAS package for download.
From other posts I have figured out that
it might be completely unavailable
(since it seems to have been replace by
other program...

1611

By: atorres

06/24/2016 01:26PM

Ellipse: Mag_lerr and Mag_uerrStarted by:michgradstudent, 06/23/2016 01:45PM
Doe anyone know what the values MAG_LERR
and MAG_UERR in the ellipse output file
represent?
They seem rather small, so I thought
maybe that they represent the fraction
of MAG which the upper and lower limits
are.
e.g. MAG = 21.1 MAG_LERR = 0.0108 ...

697

By: michgradstudent

06/23/2016 01:45PM

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