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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 ... 		 
1787 1
By: fitz
06/27/2011 07:13PM
Normal Topic
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! 		 
1760 3
By: fitz
06/25/2011 03:17AM
Normal Topic
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... 		 
1553 2
By: valdes
06/24/2011 10:01PM
Normal Topic
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 ... 		 
1421 1
By: valdes
06/23/2011 09:54AM
Normal Topic
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... 		 
1243 1
By: valdes
06/21/2011 09:39AM
Normal Topic
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... 		 
1903 3
By: fitz
06/15/2011 08:58PM
Normal Topic
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? 		 
2082 3
By: fitz
06/14/2011 09:13PM
Normal Topic
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... 		 
1818 3
By: cosmologist
06/12/2011 08:34PM
Normal Topic
"response" taskStarted by:cosmologist, 06/11/2011 10:23PM
I read the help page of "response" but
I am still not sure what it actually
does or to be more specific, why we need
it....

As far as I understand it normalizes the
input flat file (the input file and the
normalization file in my case are the
same). ... 		 
4028 8
By: cosmologist
06/11/2011 10:23PM
Normal Topic
Problem when using <msctpeak>Started by:Jun Xu, 06/10/2011 04:29AM
Hi all!

I've been troubled by a problem when I
use the command <msctpeak> to
update the WCS. The parameters are
setted as below.
---------
mscred> mscfinder
mscfinder> epar msctpeak

I R A F
Image Reduction and Analysis
F... 		 
1682 1
By: valdes
06/10/2011 04:29AM
Normal Topic
Error cannot open deviceStarted by:rwatkins77, 06/07/2011 09:56PM
I successfully installed IRAF and ds9 on
my Mac Pro (Mac OSX 10.5.8). Both
programs work fine independently, but I
can't get IRAF to talk to ds9. When I
try the display task I just get "ERROR:
cannot open device
(node!imtool,,512,512)". I am sure
t... 		 
9925 11
By: fitz
06/07/2011 09:56PM
Normal Topic
gsreduceStarted by:donzelli, 06/07/2011 12:46PM
Hi,

I received a month ago my first set of
Gemini observations. This is GMOS
spectra in MOS mode. My first surprise
was that I did not find a cookbook or
similar to reduce the observations. The
second surprise was that the Gemini help
desk does not wor... 		 
11891 22
By: donzelli
06/07/2011 12:46PM
Normal Topic
Bug? Does FITPSF output RSIGMA or HWHM?Started by:csimpson, 06/02/2011 05:18PM
Edit: should have said I'm running IRAF
V2.15 on Fedora 13.

I'm running digiphot.apphot.fitpsf on an
image to fit circular gaussians
(radguass) to stars but find that the
values it outputs are always too large
when compared to imexam. The help says
tha... 		 
1628 1
By: valdes
06/02/2011 05:18PM
Normal Topic
Image parameter not found (CCDMNTMP)Started by:tsaab, 05/31/2011 11:21PM
I am having a issue with mscarith. I
was subtracting my zerocombined image
from my science frames and everything is
working fine, until I changed to another
directory. I started getting the error
"Image parameter not found (CCDMNTMP)".
I checked all ... 		 
1884 2
By: valdes
05/31/2011 11:21PM
Normal Topic
mkmsc not working (despite having wor...Started by:fks, 05/30/2011 05:26PM
Can someone please help? I am using
mscred.mkmsc to convert a single image
from a CCD with 2 amplifier readout
into the multiextension format. For
this, I have created the description
file mkmsc.dat, which sits in the
working directory and reads as fol... 		 
1944 2
By: valdes
05/30/2011 05:26PM
Normal Topic
Copying Headers in Mosaic1.1 FilesStarted by:RLBeaton, 05/27/2011 05:42PM
Hello,

On a recent KPNO+Mosiac1.1 run, many of
my exposures did not have headers. I
have been attempting to copy the header
from one file to the pixels for another
file and then edit the required fields
with mscred.ccdhedit

My first attempt was to us... 		 
2410 2
By: valdes
05/27/2011 05:42PM
Normal Topic
Psfmeasure problemsStarted by:MeganC2, 05/26/2011 10:58PM
I'm having trouble getting psfmeasure,
in the external package nmisc, to work
properly. When I try to test run it, the
result is as follows:

[code:1:08ee8a9029]nmisc> psfmeasure
dev$pix
** Select stars to measure with 'm' and
finish with 'q'.
** Add... 		 
2895 5
By: valdes
05/26/2011 10:58PM
Normal Topic
Pydrizzle Errors (and missing SkyField?)Started by:ReiCow, 05/26/2011 01:29AM
Hello,

I am running STSCI_Python 2.10, with
python 2.5.4, and IRAF 2.14 (have tried
2.15 and 2.12 as well). When I try to
run the following command in Pyraf (on
an ACS file, after importing pydrizzle),
I get:

--> pydrizzle j8f631jaq_flt.fits
Fil... 		 
1386 1
By: fitz
05/26/2011 01:29AM
Normal Topic
The trace in apallStarted by:cosmologist, 05/24/2011 07:19PM
What does the "trace" part of apall do?

In the manual I am using it says that
the reason one needs to trace is the
fact that the actual spectral line is
not prfectlly parallel to the dispersion
axis. That doesn't make much sense to me
because when I lo... 		 
4620 10
By: cosmologist
05/24/2011 07:19PM
Normal Topic
Matching DS9 image with implot imageStarted by:cosmologist, 05/23/2011 03:26PM
I have some basic questions about
understanding the image of a spectrum
that I see in DS9 vs what I see when I
use "implot" to see that same object
spectrum.

Let's say I have a 2D spectrum image on
DS9 where there is a white horizontal
line on a blank ... 		 
3892 7
By: valdes
05/23/2011 03:26PM
Normal Topic
.snap graphic buffer overloaded?Started by:aclocchiatti, 05/19/2011 11:51PM
I have come across a problem when trying
to produce hard copies of the graphic
window of task splot, if I am working
with very large spectra (for example a
spectrum having about 411800 pixels).
In such a case, I am able to work with
splot as usual, but... 		 
2049 2
By: aclocchiatti
05/19/2011 11:51PM
Normal Topic
splot signal to noiseStarted by:milena, 05/18/2011 04:34PM
hey,

I noticed that it is possible to get a
wavelength dependent plot of the signal
to noise if I have a spectrum that is
extracted with apall and wavelength
calibrated. To get it I have to plot
image band 4 with splot. If I do it with
my spectra, it d... 		 
1812 1
By: valdes
05/18/2011 04:34PM
Normal Topic
GPREPAREStarted by:donzelli, 05/17/2011 11:42AM
Hi,

I'm trying to reduce GMOS data and I'm
using GEMINI package V 1.10
under IRAF V 2.13-BETA2.

After runing the GPREPARE routine I have
the following message:

Input list = @objects.lis
Output list =
Output prefix = gt
Raw path =
Add MDF ... 		 
2764 6
By: donzelli
05/17/2011 11:42AM
Normal Topic
Error with IGI app of STSDASStarted by:moser, 05/11/2011 11:24PM
Hello everybody!

When I try to execute the app. igi
(stsdas.graphics.stplot), I get the
following error:
= = =
ERROR: segmentation violation
igi ()
= = =
Anyone knows how to work around it?
I have the IRAF 2.15.1a at Ubuntu 11.04,
with STSDAS and... 		 
2059 2
By: moser
05/11/2011 11:24PM
Normal Topic
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... 		 
1871 2
By: milena
05/11/2011 09:34PM
Normal Topic
standard task...Started by:Jason Quinn, 05/05/2011 10:28PM
When running the standard task in
command mode (I use the kpnoslit one),
if "interact=yes" and the output is
rather ugly because it's missing
newlines in key spots.

For instance, with an image with two
apertures,

[code:1:7ab90b5beb]standard
("... 		 
1910 1
By: valdes
05/05/2011 10:28PM
Normal Topic
minor tick in splotStarted by:vega, 04/26/2011 12:12PM
Hi all,

How to add the minor ticks in the
graphic window when using splot or
specplot?I know this can be solved when
using spectool but the problem is that
the spectool seems not stable under
ubuntu linux. I have tried before but
the program always han... 		 
1725 2
By: vega
04/26/2011 12:12PM
Normal Topic
coordinates from photStarted by:Angelap, 04/24/2011 11:31PM
Hello,

I am using noao->digiphot->daophot
to calculate the coordinates and the
magnitudes of several stars in an image.
I calculate the coordinate list using
daofind and I use the output list to run
phot and get the magnitudes. I noticed
that the... 		 
1754 3
By: fitz
04/24/2011 11:31PM
Normal Topic
how apall estimate the errors/sigmas?Started by:pascale, 04/22/2011 08:41PM
Dear all,

I would like to know, with details, how
apall estimate the errors it is
providing as the 4th extension of the
output spectrum.

Thank you for your help,

Pascale 		 
1273 0
By: pascale
04/22/2011 08:41PM
Normal Topic
msccmd and imcombineStarted by:hartigan, 04/20/2011 04:09PM
Hi,

Does msccmd work with imcombine? I tried

msccmd "imcombine $input tmp
combine=median"
input="sky70,sky71,sky72"

but it tried to median filter
sky70[1],sky70[2] etc. instead of taking
sky70[1],sky71[1],sky72[1] and put them
into tmp[1].

I can do ... 		 
1593 1
By: valdes
04/20/2011 04:09PM
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