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Using SynphotStarted by:cosmologist, 06/12/2011 08:34PM
I am trying to use synphot to open the
1993 Kurucz model images ( available
here:
ftp://ftp.stsci.edu/cdbs/grid/k93models/
)

The instructions are here:

Synphot tasks now permit the use of
spectra selected from one of many
columns in a single STSDAS t...

1821

By: cosmologist

06/12/2011 08:34PM

imcoords.ccsetwcsStarted by:ja_zzz, 02/07/2008 02:00PM
Hi!

I'm trying to use ccsetwcs like I've
always done but I get a "segmentation
violation" message.

I'm running the patched version of IRAF
2.14 on a MacBook (Intel) OSX 10.5
(Leopard), but I've tried it also on a
Linux machine running 2.14 and 2.13
be...

1827

By: fitz

02/07/2008 02:00PM

imcomb in script helpStarted by:jcadien1, 01/31/2011 08:13PM
Friends,
For s few years I have been reducing
some images using bash scripts calling
an IRAF task. During this time I have no
upgraded iraf, nor my OS, Kubuntu linux,
2.6.24-19. Two days ago one of the
procedures stopped working.
What I do here is in a...

1828

By: jcadien1

01/31/2011 08:13PM

imcombine arithmetic exceptionStarted by:jkwerk, 04/30/2008 10:09PM
Hello,

I'm using IRAF version 2.12.2, for
reference. I recently switched to an
intel mac, and have been having
difficulty with imcombine on data with
which imcombine used to work well. I
have tried changing virtually every
parameter within imcombi...

1830

By: fitz

04/30/2008 10:09PM

moveheaderStarted by:dbrenner, 09/15/2008 08:53PM
I have a fits file with the necessary
header information in fits[0] and the
image in fits[1].

I tried moveheader test.fits
test.fits[1] new.fits[0, overwrite] but
without luck.

thanks
ftp://ftp.amnh.org/pub/people/nzimmerman/downloads/Proj1640/test.fits

1834

By: dbrenner

09/15/2008 08:53PM

help to convert WFPC2 fits files to b...Started by:cruisecontrol, 06/13/2008 11:13PM
Hi,

I am having some trouble in viewing
WFPC2 files on ds9; so, in the target
dataset, I have files like
u2nj0105t_c0f.fits, u2nj0105t_c1f.fits,
u2nj0105t_d0f.fits, u2nj0105t_pdq.fits,
etc. How do I convert them to a mosaic
image of the target that I...

1834

By: fitz

06/13/2008 11:13PM

mknobsfile error in V2.16.1Started by:cngeow, 05/09/2017 07:57AM
Hi, I have trouble with mknobsfile in
IRAF with the following version:

NOAO/IRAF PC-IRAF Revision 2.16.1 EXPORT
Mon Oct 14 21:40:13 MST 2013

Below is the input for mknobsfile

PACKAGE = photcal
TASK = mknobsfile
photfile= stdobs.mag...

1835

By: cngeow

05/08/2018 03:07AM

imstat algorithm: sigma clippingStarted by:KevinVolk, 12/19/2014 06:37PM
I routinely use imstat to get statistics
on images. One of the more useful
aspects of imstat is the ability to do
the sigma clipping and remove deviant
pixels. I use it a lot to look at
detector characterization data and get
the mean/standard deviatio...

1835

By: fitz

12/19/2014 06:47PM

Systematically growing daophot magnit...Started by:lmt, 10/27/2009 08:02PM
In daophot photometry of crowded fields,
during the iteration to remove neighbors
that blend PSF stars that cycles
psf-> nstar-> substar-> psf,
where the photometry input file to psf
is the substar output file with
unsubtracted PSF stars, nstar...

1836

By: lmt

10/27/2009 08:02PM

igi problemStarted by:emanunez85, 04/08/2011 09:35PM
Hi
I have just installed the IRAF
2.15.a1 installed the external packages
like tables and stsdas. I have Mac Book
Pro 13" OS X, version 10.6.7 with Intel
Core i5 processor.
Everything seems running properly
except for 'igi' task. I tried to run
i...

1837

By: emanunez85

04/08/2011 09:35PM

Does longslit still exist in v2.14?Started by:Rizer, 04/21/2008 06:33AM
Hi all, I was trying to do the tutorial
using longslit, but whenever I tried to
execute it I got a "task 'longslit' not
found".

I would like to ask if such task still
exist in v2.14?

1837

By: fitz

04/21/2008 06:33AM

New to IRAF, getting APALL to work th...Started by:dm, 03/06/2009 09:50PM
Hi Folks, let me begin by apologizing
for my naievety. This is my first go at
using IRAF, and my objective is to
reduce spectra and deduce radial
velocities. However, I am having
problems getting apall to run as it
should. I am using IRAF in cygwin (...

1844

By: dm

03/06/2009 09:50PM

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...

1845

By: massey

02/07/2017 02:49PM

error bars on spectraStarted by:ebru, 05/23/2008 12:19PM
can we indicate error bars on the
spectra, if so how

1845

By: valdes

05/23/2008 12:19PM

Constant value substitution for pixelsStarted by:sa14722, 12/11/2014 07:21PM
I'm new to iraf so please pardon me if
this is perhaps a silly question.

So I have an image which has a diagonal
region of bad pixels. I have created a
text file which contains a list of the x
and y positions of all these bad pixels.
I am trying to r...

1849

By: sa14722

12/12/2014 03:12PM

Keck LRIS data reduction - 2006Started by:ash, 02/25/2010 11:00PM
Hi all, I am just getting my hands on
some (red) LRIS data and am working on
resolving the problem with bias from the
double amplifiers on the CCD. As the
system was upgraded recently, the
current support page doesn't seem to
apply to my data, taken in...

1850

By: ash

02/25/2010 11:00PM

phot format code typoStarted by:Jason Quinn, 05/26/2008 10:53PM
I noticed that
[b:f6eaf74468]phot[/b:f6eaf74468] (and
[b:f6eaf74468]daofind[/b:f6eaf74468])
frequently give the wrong date format in
the magnitude (and coordinate) file
headers where the year format only has 3
y's:

[code:1:f6eaf74468]#K DATE = 20...

1850

By: valdes

05/26/2008 10:53PM

Unwanted prompt for list-directed par...Started by:JanRap, 06/01/2010 10:01AM
Hi

I am suddenly getting prompts for my
list-directed structs. Does this have
anything to do with the tasks being in a
package? Below is the relevant code:

[code:1:32d189bccf]# The main task for
the pipeline, from which
# other tasks are called

proc...

1851

By: fitz

06/01/2010 10:01AM

when does ccxymatch fail?Started by:aoxsic, 09/02/2008 08:03PM
Dear IRAF staff,

I have some images with WCS in the
headers. I also have a list of RA DEC
coordinates of stars that could be used
for photometry. I want to run some IRAF
task, I guess ccxymatch, in order to
transform the RA DEC to pixel
coordinates. Th...

1856

By: valdes

09/02/2008 08:03PM

Matching gain for different chips in ...Started by:paco, 06/26/2009 09:12PM
I'm processing data from a mosaic camera
(IMACS on Magellan I) where the gain is
significantly different from one chip to
another. Ultimately I am trying to make
a single image by putting the pieces
together and stacking a set of several
dithered expos...

1857

By: paco

06/26/2009 09:12PM

deblending by splotStarted by:owen, 03/25/2008 04:31AM
Dear Mike, and anyone else,

I use SPLOT to measure blended emission
lines in 1-D spectrum. But I faced with
this case. After typing d key, I am
asked "fit positions (fixed, single,
all, quit)?" and "fit Gaussian widths
(fixed, single, all, quit)?". I d...

1859

By: fitz

03/25/2008 04:31AM

Error: task cosmicrays not foundStarted by:unixil_astro, 12/17/2014 02:54AM
hi, i have a problem in running
cosmicrays task, when i run "spa
cosmicrays", it says task "cosmicrays"
not found, and under ccdred i can't find
cosmicrays indeed.

should i run something like make latest
or things like that to fix the problem,
or i ...

1860

By: unixil_astro

12/17/2014 03:02AM

doing CCDPROC on fit format imageStarted by:sochuwing, 10/20/2008 10:20AM
Hi,
I am going to use [i:c689ee30ed]NOAO
CCDPROC[/i:c689ee30ed] task to process
sets of frames in .fit format. The task
worked fine for
[i:c689ee30ed]zerocombine[/i:c689ee30ed]
and a combined Zero.fit was created.
However, when I went to the next step
[...

1860

By: sochuwing

10/20/2008 10:20AM

Changing size of images in Started by:suma99, 08/24/2015 05:52PM
Hello!

I am trying to change the size of the
simulated image through the "gallist"
and "mkobjects" functions in the
"artdata" package. The image always come
out to be 512 x 512 in size, but I would
like the images to be bigger or smaller
sometimes. T...

1861

By: suma99

08/24/2015 06:03PM

Keck LRIS data reduction - 2006 (2)Started by:ash, 06/21/2010 08:17PM
Hi all again, I wrote a few months back
regarding some (red) Keck LRIS data that
I was reducing and some issues with the
dual amplifier and the routine WMKOLRIS.
In the time since I've been able to
figure out those issues and have
progressed through to...

1863

By: ash

06/21/2010 08:17PM

problems with msctpeak in mscredStarted by:rcarrera, 07/17/2008 12:01PM
Dear all

I have a problem with msctpeak. I have
used this task in some images and it
runs without problems. However, in
another few images (all the images were
taken in the same run) it fails to
center any star in the image with keys
k, l, or j. At fir...

1866

By: rcarrera

07/17/2008 12:01PM

gscalibrateStarted by:andrea, 09/16/2009 11:08PM
hi,

i am trying to flux calibrate my
spectra. i have a perfectly normal
looking sens.fits. however, when i use
gscalibrate the continuum of the output
looks very different than expected, it
is way to bright in the blue. when i
divide by hand my spectr...

1867

By: fitz

09/16/2009 11:08PM

guiapps demo taskStarted by:Jason Quinn, 01/31/2008 07:54AM
By default a clean install of the
guiapps package looks for a file called
demo$puzzle.gui when the file it is
looking for is called demo$demo.gui

Jason

1867

By: fitz

01/31/2008 07:54AM

Issues with *registerStarted by:brentdutra, 10/27/2010 09:14PM
I'm working on a small project on HCG
objects using data from SDSS. Right now
I'm simply looking for tidal distortions
based solely on human eye observations,
although I will need to do photometry
later. Long story short, most of my
objects have hundred...

1868

By: brentdutra

10/27/2010 09:14PM

how to divide images?Started by:milena, 05/11/2011 09:34PM
hey,

Normally I use the scombine task to sum
spectra which are already onedimensional
(.ms.fits).
Which task can I use to divide two
dispersion corrected spectra? I want
IRAF to take the wavelength scale into
account like it does in scombine where I
s...

1873

By: milena

05/11/2011 09:34PM

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