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Group ImagesStarted by:Guest, 06/15/2006 02:36PM
I am working on some HST data and am
using iraf to reduce the data and I have
a couple of questions:

1. Is there a task or command that I can
use to make a single image consisting of
4 groups from 4 different images? I have
4 seperate images of the 4 c... 		 
2377 2
By: Guest
06/15/2006 02:36PM
Normal Topic
COLOR Installation Problem (fwd)Started by:fitz, 06/13/2006 09:50PM
[color=red:6baa23af57][MOD NOTE:
Forwarded from
comment][/color:6baa23af57]

Authored by: Anonymous on Tuesday, June
13 2006 @ 03:37 PM MDT
When I try to install locally the color
package, there is a "color" added
everywhere :
mkpkg -p color linux will... 		 
2273 1
By: fitz
06/13/2006 09:50PM
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Question regarding PSFMeasure commandStarted by:Guest, 06/13/2006 06:04PM
To Whom it May Concern, I am currently
using the psfmeasure command from the
NOAO Obsutil package to compute FWHM's
for multiple stars in multiple images.
(I am using the extracted FWHM's to
adjust the aperture radius for
photometry, attempting to comp... 		 
2676 1
By: valdes
06/13/2006 06:04PM
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"Memory has been corrupted" error on ...Started by:Guest, 06/12/2006 06:08PM
Hi Iraf folks,

Any suggestions on how to beat this
problem? When I run this command:

crosscor
input1=j8rq22maq_single_sci.fits
input2=j8rq22maq_single_sci.fits
output=xcor_j8rq22maq_j8rq22maq.fits
coord_shift=no center=yes pad=no

I get this output... 		 
2819 1
By: fitz
06/12/2006 06:08PM
Normal Topic
Saving color images with tvmark markingsStarted by:Guest, 06/12/2006 12:46PM
Dear Sir,

I am using the IRAF/tvmark task to mark
a few objects with different
colors. When giving this task an output
file the image is saved but, the
color markings are converted to
grayscale.
Is there a way to save the image with
the actual markings... 		 
2346 1
By: fitz
06/12/2006 12:46PM
Normal Topic
bug in quadred.ccdprocStarted by:massey, 06/12/2006 03:32AM
If you feed qaudred.ccdproc a bunch of
images with "noproc+" and
quadred.backup=Raw/ (say), then the
images in the main directory
are turned from integers to real, and
the old versions of the images are
dumped into Raw, despite the "list
processing step... 		 
2796 1
By: valdes
06/12/2006 03:32AM
Normal Topic
Multi-amp ccd reductionsStarted by:massey, 06/11/2006 09:20PM
Mike and/or Frank----

I'm trying to reduce some CTIO 0.9-m ccd
images. These were taken with
4-amplifier readouts, and each quadrant
needs its own bias removal, etc.
There used to be an IRAF task,
arcon.quadproc which handled these data,
but I can't f... 		 
3340 2
By: massey
06/11/2006 09:20PM
Normal Topic
reidentify - why does it find bogus l...Started by:gfuresz, 06/06/2006 06:24PM
Hi,

I try to use reidentify in the specred
package to automatically identify ThAr
emission lines based on a
"master-reference" file. I have to do it
this way since the MOS image has 240
spectra in it, with a zig-zag pattern
wavelength shift between ape... 		 
2758 1
By: valdes
06/06/2006 06:24PM
Normal Topic
isoexamStarted by:JN, 06/06/2006 03:47PM
Hi-

I ran ellipse
(stsdas.analysis.isophote.ellipse) on
one of my images and it successfully
made an output table (gal.tab). Now I
am trying to overplot the ellipse
contours from the table onto my galaxy
fits image in ds9. I can plot the
contours whe... 		 
5270 4
By: fitz
06/06/2006 03:47PM
Normal Topic
Subscripts in axes labelsStarted by:, 06/06/2006 02:03PM
Hi

Can you give me some information on how
to do sub/superscripts within axes
labels using splot? I have spectra where
I have fitted emission lines within
splot and need to produce plots of the
data with the fit overplotted. I know to
change the labels... 		 
3022 3
By: fitz
06/06/2006 02:03PM
Normal Topic
using mscred with Subaru Suprime Cam ...Started by:joshw, 06/06/2006 01:05AM
I'm about to try reducing Suprime Cam
data from Subaru. Suprime is a wide
field camera similar to Mosaic with 10
CCDs instead of 8. I've reduced a lot
of KPNO and CTIO Mosaic data and am
familiar with mscred, so I was hoping to
use it for Suprime cam ... 		 
3180 1
By: fitz
06/06/2006 01:05AM
Normal Topic
Doecslit 'sparams' and Apall parametersStarted by:iur, 06/05/2006 10:28PM
Hello,

I have been using the DOECSLIT task to
extract echelle spectra. I have tried
to adjust the parameters for the trace
using the 'sparams' within DOECSLIT, but
with no success in extracting my spectra
the way that I want. When I look at the
param... 		 
3268 2
By: iur
06/05/2006 10:28PM
Normal Topic
find wcs when pointing unknownStarted by:jim, 06/03/2006 08:04PM
Is there any IRAF task(or non-IRAF for
that matter) that will take an image
with no wcs header info and locate the
sky postion and produce a wcs? I know
the position to about +/- 10 deg in each
axis.

Thanks,
Jim 		 
4416 3
By: jim
06/03/2006 08:04PM
Normal Topic
Parameters fd1 and fd2 in rspectextStarted by:Guest, 06/02/2006 10:27AM
Dear IRAF help,
Please could you tell me what is
the meaning of the parameters fd1
and fd2 in noao.onedspec.rspectext.
There is no comment against them in
the par file and nothing in the
help file. I am running version 2.12.2.a

Many thanks
... 		 
2761 1
By: fitz
06/02/2006 10:27AM
Normal Topic
ds9 dropping rows from irafStarted by:Aaron, 06/02/2006 04:07AM
The y-pixel coords are wrong in my
images displayed in ds9 from iraf. This
especially affects usage of tvmark and
imexam. [b:fb28756c5f][i:fb28756c5f]One
row in every eleven is actually missing
from the displayed
image[/i:fb28756c5f][/b:fb28756c5f],
w... 		 
2383 1
By: Aaron
06/02/2006 04:07AM
Normal Topic
msccmatch problemStarted by:joshw, 06/02/2006 01:29AM
Hi,

I'm running into a problem using
msccmatch in mscred. I'm running it in
non-interactive mode on a long list of
object files. From time to time it
stops with an error (see below). When
restarted (after removing the
sucessfully completed files fro... 		 
3355 1
By: valdes
06/02/2006 01:29AM
Normal Topic
Converting fits file into data pointsStarted by:rohit, 06/01/2006 07:38PM
Hello All,

I would like to know a command or sets
of commands I need to use to convert a
fits file into data points for plotting.
Well, I have a plot Flux vs wavelength.
I would like to use IRAF to obtain two
data-point columns, Flux and wavelength,
s... 		 
3001 1
By: fitz
06/01/2006 07:38PM
Normal Topic
Questions from M. De RobertisStarted by:Guest, 06/01/2006 01:11PM
Dear IRAF,

I have two questions that I'd like your
help with please.

1. I have a POSS fits image that I've
'display'ed and would like to run
'imexamine' on in order to get the RA
and Dec coordinates for certain
stars. When I type 'a' to get a
stellar... 		 
2486 1
By: fitz
06/01/2006 01:11PM
Normal Topic
msctpeak errorStarted by:joshw, 05/31/2006 08:44PM
I've just switched to a Mac OS X system
and have run into an error when running
msctpeak:

[code:1:dbae80f486]ms> msctpeak
obj009 USNO_obj009 database
ERROR on line 62: Cannot open
connected subprocess
(ttools$x_ttools.e)
msctpeak ... 		 
3116 1
By: fitz
05/31/2006 08:44PM
Normal Topic
Cutting emission linesStarted by:mv1612, 05/31/2006 03:52PM
Hi,

My first post here, if it is elementary
I apologize, I just began learning IRAF.
I'm working on some very high resolution
spectra of a WR star. I need to cut the
upper part of an emission line cause I
would use the wings only for
cross-correlation,... 		 
3256 2
By: mv1612
05/31/2006 03:52PM
Normal Topic
Fringe removal in red partStarted by:valdes, 05/30/2006 05:30PM
[b:aed5a995d4]From:
[/b:aed5a995d4]Ranjan Gupta
<rag@iucaa.ernet.in
([email]rag@iucaa.ernet.in[/email])>
[b:aed5a995d4]Date: [/b:aed5a995d4]May
27, 2006 10:52:23 PM MST
[b:aed5a995d4]To: [/b:aed5a995d4]"Frank
F. Valdes" <valdes@noao.edu
([email... 		 
3361 0
By: valdes
05/30/2006 05:30PM
Normal Topic
book-quality fonts in igi?Started by:dan.maoz, 05/30/2006 03:28PM
Hi
I've used igi to produce figures for a
textbook. IGI uses the same
Roman fonts as Mongo and Supermongo,
which are seen very frequently
in papers in the astro journals.
However, the illustration expert at
Princeton University Press has
complained t... 		 
3204 2
By: dan.maoz
05/30/2006 03:28PM
Normal Topic
Registering ImagesStarted by:Hooloovoo, 05/30/2006 10:57AM
Hi,

I need to align several *.fits frames
from a single telescope and then stack
them. The problem is that there are
small rotations from frame to frame so I
cannot use
[color=blue:34a91f3caf]imalign[/color:34a91f3caf].
I attempted to use [color=blue... 		 
5555 6
By: Hooloovoo
05/30/2006 10:57AM
Normal Topic
Rebinning echelle spectraStarted by:, 05/29/2006 09:19AM
Is it possible within IRAF to rebin
spectra by a factor of 2 (to obtain
better S/N) rather than to a specific
dispersion value? I see dispcor can be
used to set a new value of 'wavelength
value per pixel', but as the dispersion
of echelle spectra vary w... 		 
2708 1
By: valdes
05/29/2006 09:19AM
Normal Topic
Also Memory problems in mscred.combineStarted by:Guest, 05/26/2006 06:51AM
I was trying to run mscstack to combine
mosaic images. I met errors "PANIC in
`/iraf/mscred/bin.redhat/x_combine.e':
Memory has been corrupted" only if the
number of input images is larger than
33. I downloaded the pacthed package of
mscred, ie, which ... 		 
2457 1
By: valdes
05/26/2006 06:51AM
Normal Topic
Dohydra Line Identification CrashStarted by:Guest, 05/25/2006 06:22PM
Hello,

I am having a strange crash when running
dohydra. It occurs during the
comparison line identification. I check
the identification and modify the fit
for the first one and then let the rest
of the apertures run. If I select NO
and let them all... 		 
2648 1
By: valdes
05/25/2006 06:22PM
Normal Topic
Spectool numbs to keystrokes and xgte...Started by:sirmarcos, 05/24/2006 06:38PM
So, on MacOS X running Tiger and xgterm,
there is a reproducible problem I'm
having with spectool.

I load up a spectrum. I use the
"continuum fit spectra by curve fitting
of spectra" or whatever the words are,
which works. I then normalize the
spectr... 		 
3111 1
By: valdes
05/24/2006 06:38PM
Normal Topic
specred packageStarted by:Guest, 05/24/2006 06:17PM
I am trying to do a multi-fiber
spectroscopic reduction using the
specred package.  I am using a 293
fiber system and there is moderate
curvature of the spectral lines.  I am
encountering a problem when
re-identifying spectral lines from my
first arc ... 		 
2709 1
By: valdes
05/24/2006 06:17PM
Normal Topic
Flux calibrationStarted by:, 05/24/2006 01:28PM
Hello,
I am currently a student. I found
a job at my university and I must do
some spectroscopy. My director haven`t
done any spectroscopy for years so he
cannot answer any of my questions! =(

I read a lot and I think I got to the
point where I ... 		 
2853 1
By: geprieto
05/24/2006 01:28PM
Normal Topic
PDM extracting epoch at minimum lightStarted by:gnarayan, 05/23/2006 04:01AM
Hi,

I'd like to use PDM to fold a light
curve to a known period and extract the
epoch at minimum light - hitting the a
key gives me an epoch - is this the
epoch at 0 phase? Is there some other
way given a sparsely sampled light curve
and a known period... 		 
3089 1
By: fitz
05/23/2006 04:01AM
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