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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

Cross talk issues with WIYN MINIMO.Started by:tsaab, 06/14/2011 09:13PM
I was following the standard reduction
process for photometric data when I
found that my sciences frame had a lot
cross talk. I was wondering if there
exist any cross talk correction files
for WIYN MINIMO?

2084

By: fitz

06/14/2011 09:13PM

Aargh! problem with geomap etc- I jus...Started by:drr0b, 06/15/2011 08:58PM
Hi,

I'm trying to use geomap to translate
one image onto another, in order to get
difference images.

However, every time I try it, I get
gibberish out, and it it hangs (I can
cntrl-z out of iraf, but iraf freezes).
I even tried it with a simple coordi...

1906

By: fitz

06/15/2011 08:58PM

The 'flux' parameter in 'transform' taskStarted by:Kimmo, 06/21/2011 09:39AM
Hi

I am using the 'transform' procedure to
correct the wavelength-curvature of
longslit spectra.
The procedure has the parameter 'flux',
which is used to control the
conservation of flux per pixel.

Our measurements are so that we are
measuring scat...

1248

By: valdes

06/21/2011 09:39AM

any task to subtract a star othan tha...Started by:china_108, 06/23/2011 09:54AM
I've got a psf generated by tiny
tim(http://tinytim.stsci.edu/cgi-bin/tinytimweb.cgi).
It is in fits format. Now I am trying to
subtract an unwanted star using this
psf. Other than the task substar, is
there anything else I can use? I don't
want to use ...

1424

By: valdes

06/23/2011 09:54AM

mscsplit issue with ACS files?Started by:ReiCow, 06/24/2011 10:01PM
Hello,

I am trying to mscsplit an ACS file, and
I am getting an odd result. It correctly
makes 7 files, however files 4-7 are
mirrors of 1-3.. all are chip 2 (instead
of chip 1 for one set, chip 2 for the
other). Is there something special I
need to do...

1557

By: valdes

06/24/2011 10:01PM

The data files into tables to be plot...Started by:cosmologist, 06/25/2011 03:17AM
Hi,

Is there a way to view the .fits files
as a table with 2 columns (wavelength
and flux) for the reduced data, so that
it can easily be plotted with other
plotting programs?

Thanks!

1763

By: fitz

06/25/2011 03:17AM

Annotating plots using gcurStarted by:weistrop, 06/27/2011 07:13PM
I'm trying to label plots generated by
sgraph, in particular the vertical axis.
Using =gcur I've been trying to set the
up and path parameters in txset so that
the vertical axis label reads from low
to high with the letters 'lying on
their backs', as ...

1790

By: fitz

06/27/2011 07:13PM

msctpeak and ds9 and OSXStarted by:long, 06/29/2011 12:26AM
I am having a problem with msctpeak (in
Iraf 2.14) and ds9 processing MiniMo
data from WYIN when I try to run this
from my Mac laptop (SnowLeopard).
MiniMo as you may recall produces file
with 4 extensions.

What happens when msctpeak starts is
that th...

1218

By: long

06/29/2011 12:26AM

better than rspectext - no constant stepStarted by:rp, 06/29/2011 09:50AM
Hello everyone.

I have to pass from ascii (flux,
wavelenght) to fits for worknig in iraf
with this spectrum.

I am using rspectext.

The point is the step (difference
between one wavelenght and the next one)
is not fixed through the whole spectrum
we h...

1424

By: rp

06/29/2011 09:50AM

Two spectrophotometric standardsStarted by:jsm, 06/29/2011 04:49PM
Hello,

I would like to flux calibrate a
spectrum using the data of two
spectrophotometric standard stars (one
red and one blue).

I was able to create two flux files, one
for each star, using the task
"standard". I could obtain the
sensitivity function...

2955

By: valdes

06/29/2011 04:49PM

digiphot photcal fitparams segmentati...Started by:jthorstensen, 07/08/2011 06:34PM
Hi (Mike, probably),

I have a newly installed IRAF 2.15.1a.
I'm trying to run fitparams, and getting
a segmentation violation. In the
discussion with marblestation dated
April 18, it looked as if you'd found a
bug that produced this behavior, but
the...

1917

By: fitz

07/08/2011 06:34PM

is it possible to adjust the intensit...Started by:china_108, 07/10/2011 03:58PM
I generated a psf using the psf task and
I need to adjust its intensity to apply
it to an over-exposed star. Is it
possible to do it in iraf?

1323

By: valdes

07/10/2011 03:58PM

How to install tfinder?Started by:ping, 07/11/2011 03:28PM
Hello,

I have CCD images from CTIO Yalo-1m
telescope. They only have telescope
pointing but no astrometry solution for
the image itself. Can tfinder make the
astrometry solution for the images? If
so, where do I get the tfinder?

Thanks,

Ping

2447

By: ping

07/11/2011 03:28PM

ImplotStarted by:tsaab, 07/12/2011 03:28AM
I want to compare two images using
implot. Is there any way to display
both images in the same implot window?
I can display separate plots in
different windows, but it does not help
out as much.

1406

By: fitz

07/12/2011 03:28AM

Which comp file wih which object?Started by:cosmologist, 07/13/2011 11:01PM
I am doing the step of the wavelength
calibration of the data reduction.
In the manual (A User's Guide to
Reducing Slit Spectra with IRAF) it is
mentioned that the first step is the
extract a comparison spectrum from the
object.
I am not sure which com...

2736

By: massey

07/13/2011 11:01PM

problem with imal2Started by:rwatkins77, 07/14/2011 06:45PM
Hi,

I am trying to use imal2 from the vaphot
package. I have the variable shifts
set to a filename ("shifts.dat") and I
have updates=yes. However, when I run
imal2 I always get the following error:

ERROR: cannot open `shifts.dat' for
writing
"p...

2254

By: fitz

07/14/2011 06:45PM

Ellipse/Bmodel Surface PhotometryStarted by:csblack, 07/14/2011 08:18PM
Hey,

I'm attempting to learn how to do a bit
of surface photometry using
[i:660d41b815]ellipse[/i:660d41b815].
After running
[i:660d41b815]ellipse[/i:660d41b815], I
run [i:660d41b815]bmodel[/i:660d41b815]
on the output table created. Based on
the var...

2684

By: csblack

07/14/2011 08:18PM

Problem usung Splot to analyze a FITS...Started by:surfcast23, 07/19/2011 03:18AM
Hi,
When I try to use splot to analyze a
fits file I get a weird output of
numbers and letters. I think I maybe
missing something to properly display
the FITS image. Any help would be
greatly appreciated. Thanks

[code:1:eb1bf6a056]onedspec> spl...

3537

By: fitz

07/19/2011 03:18AM

guiapps/spectool problemsStarted by:Alida, 07/19/2011 08:42PM
Hi

I am running IRAF V2.15.1a on Ubuntu
10.04 (64 bit), and I am trying to
install the guiapps package. I tried
using the "Dynamic External Package
Loading" by typing

% sudo make guiapps

in my external package directory, which
is /iraf/iraf/extern/....

3537

By: Alida

07/19/2011 08:42PM

Problems installation of TABLES &...Started by:Peter_IRAF_User, 07/25/2011 09:41AM
Dear all,

on my OpenSuSE v11.3 laptop IRAF is
installed (Revision 2.15.1a). Now I
wanted to add the TABLES and STSDAS
packages (both the present-day versions
3.8: first extern.pkg changed, then
TABLES installation, then STSDAS
installation), following ...

6805

By: fitz

07/25/2011 09:41AM

Gmos reductionStarted by:donzelli, 07/29/2011 12:08PM
Hi,
I reduced gmos (mos mode) data following
the example included in the Gemini
package and I have some questions about
the results I get.
After gsextract one could expect to get
1-d spectra in the resulting image.
In other words, if you do imhead
image...

4838

By: emma

07/29/2011 12:08PM

Imexamine graphics window text outputStarted by:mdykhuis, 08/01/2011 09:14PM
Hi,

Is there a straightforward way to save
the data that goes into the graphics
window line plots (created by the 'c',
'l', or 'u' commands) to a file? I've
been searching these forums, but I've
only found the PRADPROF function which
saves radial profi...

3178

By: Jason Quinn

08/01/2011 09:14PM

ccdproc error processing flatStarted by:jdm, 08/05/2011 01:56PM
Hi,

I'm trying to run ccdproc to process my
object frames, and it is failing with
this error:

ERROR: Error processing Dflatu.fits
"grow=grow)"
line 325: mscsrc$ccdproc.cl
called as: `ccdproc (mode=h)'

Here are the parameters of ccdproc th...

4946

By: valdes

08/05/2011 01:56PM

pstselect ERROR: segmentation violationStarted by:ping, 08/11/2011 07:44PM
Hello,

I saw this old post:

> we seem to have a problem in some
of the Daophot routines
>for some time. Namely in the
routines "pstselect" and "psf" the error
>"segmentation violation" quite often
occurs, especially when using
>wildcards ...

1707

By: ping

08/11/2011 07:44PM

psf: Analytic function solution faile...Started by:ping, 08/12/2011 04:48PM
Hello,
I am running task
psf under daophot

For most of the images is runs fine.
But for a couple of images, it took
unusually long time and at the end it
failed, with a message:
"Analytic function solution failed to
converge"

What does it mean? How...

2092

By: ping

08/12/2011 04:48PM

Logarithmic wavelength axis: problems...Started by:pweilbacher, 08/22/2011 04:41PM
Dear all,

is IRAF splot supposed to be able to
read log-resampled spectra properly? I
created some with my own software and
found that splot displays what I think
are wrong wavelengths. It could be that
I understood the FITS WCS papers
(especially "Rep...

3116

By: valdes

08/22/2011 04:41PM

nstar grp and psgStarted by:azangari, 09/02/2011 03:14PM
In my (or perhaps everyone's) version of
daophot, I get .psg file as output from
running psf. However, nstar's default
group file input is .grp. I have had no
trouble manually inputting the psg file,
but would like to know if I can modify
either psf o...

2369

By: azangari

09/02/2011 03:14PM

Deleting points in the wavelength cal...Started by:cosmologist, 09/12/2011 04:42AM
In the data reduction manuals when
talking about the wavelength calibration
step, it is mentioned that when doing
the fit, if some points are really far
away from the horizontal line one should
simply delete them... but I don't
understand what that mean...

2603

By: favilac

09/12/2011 04:42AM

agetim problemStarted by:vall, 10/05/2011 09:35AM
Hello,

recently I have been unable to use the
agetim command with IRAF 2.14. No image
is downloaded and a short error message
is saved instead of FITS image:

[quote:5bde04e0b7]
<!DOCTYPE HTML PUBLIC "-//IETF//DTD
HTML 2.0//EN">
<html><h...

8128

By: fitz

10/05/2011 09:35AM

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