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multiple spectraStarted by:Nishkin, 07/11/2006 03:17PM
Hello,
Is there a command that allow me
to put, for exemple, 5 spectra on the
same graphic? Something like 5 spectra
one under the other with the axis of
wavelenght at the bottom.

Thanks for the help!

2990

By: Nishkin

07/11/2006 03:17PM

Ccdmask..bad pixel maskStarted by:Nishkin, 07/11/2006 06:45PM
It's me again...

When I try to use ccdmask to make a bad
pixel mask with a division of flat
field...I get the error "Invalid
floating point operation"

I had flat fields of 20s and 4s..I
normalized them both with imsurfit and
divided them with imarith ...

3716

By: fitz

07/11/2006 06:45PM

Problem with imexamine & photStarted by:rachel, 07/12/2006 04:06PM
Hi,

I am trying to remove stars from an
image in order to do photometric
analysis on a galaxy. I am running the
killall task, created by Buta and McCall
(see Buta R.J. & McCall M.L. 1999,
ApJ, 124, 33). It locates the stars
using daofind and measur...

3657

By: fitz

07/12/2006 04:06PM

Stellar grouping issuesStarted by:rachel, 07/18/2006 06:55PM
I was wondering how PSF selects what
stars it includes in a group and if
there was any way this could be changed.
The field I am working on contains a
density of stars such that allstar
doesn't seem to be able to subtract
them. Some of the stars only ha...

2739

By: massey

07/18/2006 06:55PM

External DAOPhotStarted by:hbloemha, 07/18/2006 07:01PM
I'm trying to use DAOPhot, seperate from
IRAF, to do photometry. I'm new to the
whole world of photometry, and need some
help. I've succesfully downloaded
DAOPhot executables, and am trying to
use them. Whenever I try to ATTACH an
image file, it says...

2701

By: fitz

07/18/2006 07:01PM

problem with task allstarStarted by:Guest, 07/19/2006 08:58PM
Hallo,

I am an iraf user and I have encountered
some problems with the daophot task
allstar. I work on a 64 bit linux
machine.
After I give the command "allstar" and
enter all the parameters, I get the
following error:

PANIC in `/usr/stsci/iraf/noao/...

2580

By: fitz

07/19/2006 08:58PM

Update External Package MSCREDStarted by:cptsteiny, 07/19/2006 09:37PM
Hello, a friend of mine has a really old
install of IRAF and a really old version
of MSCRED (I believe it was made in
1998). Updating IRAF doesn't seem to be
an option at the moment.

Anyway, we would at least like to update
the MSCRED package. To upd...

2807

By: fitz

07/19/2006 09:37PM

problems with sbandsStarted by:, 07/24/2006 02:32PM
I am using sbands for the determination
of the equivalent width of an absorption
line in a stellar spectrum.

Using the mean location and width of the
line and setting the pseudo continuum
parameters on the left and right of the
line,
gives me in 1 case...

5207

By: valdes

07/24/2006 02:32PM

allstar errorsStarted by:rachel, 07/25/2006 07:56PM
I am having trouble fitting stars using
the allstar task. It fits most of the
stars but a large number are being
rejected with the error message keyword
"Merged" or "Singular". What exactly
does this mean?

-rachel

2452

By: fitz

07/25/2006 07:56PM

pdm - period vs. theta graphStarted by:sclardy, 07/29/2006 11:38PM
2 questions.
First, is it possible to get the period
vs. theta data out of pdm to plot with
another application (like igi)? I did
not find this data in the pdm batch
file.

Second, is it possible to change
graphics parameters for the graphs
output by...

2517

By: fitz

07/29/2006 11:38PM

imstatics nclip/lower,upper incompati...Started by:AndyNewsam, 07/31/2006 02:25PM
Hello.

I'm having a problem with imstatistics.
I am using the "upper" and "lower"
keywords to exclude values from the
statistics calulations (these are
"masked" pixels in fact) but as soon as
I set nclip > 0, it seems to ignore
upper/lower limts. As...

2740

By: AndyNewsam

07/31/2006 02:25PM

fitcoords error: bus errorStarted by:nickthealmighty, 08/02/2006 10:52AM
I'm having trouble running fitcoords on
my outputted data from Identify. It
seems the program can find the file
(though I'm not sure if it can find the
right extensions), but I just get the
output:

longslit> fitcoords
Images whose coordinates are to...

2239

By: valdes

08/02/2006 10:52AM

"Unknown table type, or line too...Started by:rhy, 08/02/2006 04:02PM
I created a binary table using "tcreate"
and "tedit"
on a Sun workstation running Solaris.
The
ttools package works without a hitch.
The IRAF distribution
is the EXPORT version of Sun/IRAF V2.11
for SunOS 4 and Solaris 2.7.

I transferred the table to ...

3501

By: fitz

08/02/2006 04:02PM

fitparams madnessStarted by:JCab, 08/02/2006 04:07PM
I am new to optical astronomy so I have
been learning to use the
digiphot package in IRAF and have been
learning to hate it with a
passion. I have found many things don't
work as advertised and

I am using the scisoft installation of
IRAF on a Mac, so...

2697

By: JCab

08/02/2006 04:07PM

fixpix interpolationStarted by:pweilbacher, 08/02/2006 04:12PM
I know this had worked for me in the
past when doing MOSAIC reductions but
with my current data I cannot get fixpix
to interpolate my data well across bad
pixels.

I have lots of saturated stars in the
field, for some reason, some of the
saturated pixel...

4493

By: pweilbacher

08/02/2006 04:12PM

ngaussfit errorsStarted by:kcwong, 08/02/2006 07:28PM
I am using
stsdas.analysis.fitting.ngaussfit to fit
a Gaussian profile across some quasar
spectra. I am running a loop that runs
ngaussfit on each column in the spectra
and makes a model image from the
profiles. While running the loop,
sometimes I get...

3159

By: kcwong

08/02/2006 07:28PM

in onedstdsStarted by:ebru, 08/03/2006 01:40PM
hello

my standard star's name is not in
onedstds. what am I must ?

2547

By: fitz

08/03/2006 01:40PM

question on IRAF noao > onedspec > di...Started by:Guest, 08/07/2006 04:36AM
Hi,
I am an user on IRAF (2.12.2) and I have
a question when doing the data
reduction on my 1D spectral data, by
using the task dispcor uder the package:
noao > onedspec.
I have a set of scientific and
calibrating (lamp) data, and both of
them
extrac...

2506

By: valdes

08/07/2006 04:36AM

how to.. change resolutionStarted by:flame, 08/07/2006 02:36PM
Hi!
I need to reduce resolution of my
spectra from R=47000 to R=22000
but I don't know which iraf task does
it.
Someone can help me?

Thanks!

3912

By: fitz

08/07/2006 02:36PM

problem with noao.twodspec.longslit....Started by:danila, 08/08/2006 10:21AM
Hello everybody!

Please help!

I reduce 2D spectral data. I have been
correcting my data for geometrical
distortions. I run identify then
reidentify and get the database files is
needed for fitcoords. At first sight,
database files generated by ide...

4176

By: danila

08/08/2006 10:21AM

Tables external PackageStarted by:lpetras, 08/12/2006 04:02PM
I've just installed the CYGWIN version
of IRAF and the base system and without
any external packages defined seems to
run ok.

Then tried to get the TABLES external
package installed (from the binary
distribution from IRAF,NET) but I get an
error saying...

4875

By: lpetras

08/12/2006 04:02PM

Packages for objective prismStarted by:Tomek, 08/14/2006 10:39PM
I have a question. Is there any packages
or tasks for IRAF for reducing objective
prism CCD images? I mean especially a
dispersion correction. Thanks!

2287

By: fitz

08/14/2006 10:39PM

WCS and DS9Started by:massey, 08/15/2006 03:06PM
Hi, Mike et al---

This problem may be well known to
everyone, but I've found myself using
ds9 and discovered it. When I display
an image in ds9, it fails to pick up the
WCS. But, if I load the same fits file
into ds9 externally to IRAF (i.e.,
directl...

6595

By: fitz

08/15/2006 03:06PM

help - convolve a spectrumStarted by:nickthealmighty, 08/16/2006 01:16PM
Hi

I need to convolve a spectrum from a
resolution of 3000 down to a resolution
of 700, can anyone tell me how to do
this in IRAF?

Thanks, Nick

2700

By: fitz

08/16/2006 01:16PM

DS9 and display command won't workStarted by:moppi, 08/16/2006 07:57PM
Hi all

Has anyone encountered same problem as
I? I think my iraf or ds9 has been
updated and now display doesn't work. I
use Debian and iraf and DS9 packages
maintained by Justin Pryzby.

I use iraf with python front-end pyraf.
DS9 starts normally with...

23543

By: Jason Quinn

08/16/2006 07:57PM

Help... DAOFIND errorsStarted by:LPowell, 08/16/2006 10:05PM
Hi,

I am running IRAF on cygwin. I had
daofind working fine, but psf
wouldn't run. I ended up doing a
reinstall.

Now daofind gives me the error:
"ERROR: CLGWRD: No match, or ambiguous
abbreviation"

Any suggestions?

Thanks.
Lee

3049

By: LPowell

08/16/2006 10:05PM

imeditStarted by:RobSwaters, 08/17/2006 02:53AM
I seem to be getting different behavior
on what imedit does when it is run
interactively or through an input file.
PC-IRAF Revision 2.12.2a-EXPORT

When I run imedit interactively, locate
the cursor where I need it to be, and
type 'e', it puts a circle...

2666

By: fitz

08/17/2006 02:53AM

DIFIMPHOT.Started by:Guest, 08/17/2006 01:14PM
Hi!

I'd like to know whether the IRAF's
library needs to be upgraded to run the
DIFIMPHOT package. I have installed this
package in my laptop but when I start
the GETPSF task it begins to run but
ends with an error, which I don't know
how
to solv...

6492

By: mairan

08/17/2006 01:14PM

txdump errorStarted by:agiltinan, 08/18/2006 10:16AM
Hi all,
I have recently installed iraf on a
cygwin/XP machine.
Most functions run ok. However, when i
try to use 'txdump' i get the following
error:

'ERROR:Cannot open connected subprocess
(ptools$x_ptools.e)'

As a result my scripts wont function on
...

2726

By: agiltinan

08/18/2006 10:16AM

gaussian minima in FXCORStarted by:braden, 08/18/2006 10:29PM
I'm attempting to use FXCOR to fit cross
correlation functions, and would like to
constrain the gaussian so that it has a
minumum value of 0. With the current
parameters that I have set, I'm getting
fwhm which are measured a negative
values. I want to...

3229

By: fitz

08/18/2006 10:29PM

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