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Last Post

CalibrateStarted by:cosmologist, 07/21/2009 04:36PM
Hi

I got to the last step of flux
calibration for slit specta,using
"calibrate".

By default the parameter used for
sensitivity is "sens" . I am leaving it
as it is, but when I run "calibrate" it
gives me an error saying: cannot open
image (sens).

...

4348

By: valdes

07/21/2009 04:36PM

fixpix interpolationStarted by:figueira, 11/29/2006 02:23PM
Hello!

I'm in what has already been called here
an "iraf moment". I am trying to use
FIXPIX to interpolate a few bad pixels,
specified in a mask created by the task
CCDPROC. I can only get fixpix to
interpolate through columns. This
produces very wierd...

4350

By: fitz

11/29/2006 02:23PM

IRAF in Cygwin: imcombine problemStarted by:delta_kuadrant, 06/21/2009 02:37PM
Hello All,
I have a problem here,
whenever I execute 'imcombine' task on
iraf under cygwin, there's an error
message: ERROR: parameter 'imcmb' not
found
and image combining failed for sure
any suggestion?

regards,

PJ

4356

By: delta_kuadrant

06/21/2009 02:37PM

pyraf and the apphot daophot dataprs ...Started by:wkerzendorf, 08/07/2007 07:00AM
I'm currently writing a framework to do
all my reductions with pyraf. One task
uses apphot and then daophot. This is
done over multiple files. So when the
way it is executed is apphot - daophot -
apphot -daophot ....
The first time I run apphot it use...

4360

By: fitz

08/07/2007 07:00AM

IRAF / IDL interaction?Started by:vall, 02/23/2007 06:01PM
Hello

Not exactly IRAF question, but
anywhere.... Does anybody know if there
is IDL procedure that can read the IRAF
spectral WCSs - multispec, etc.? I wrote
one myself but it has not been tested
extensively and I was wondering if there
is something es...

4367

By: vall

02/23/2007 06:01PM

Register a very large datacube ?Started by:bs_nuig, 05/29/2007 04:05PM
Hi,

I am trying to register a large data
cube; number of images(512x512) = 1000
or upwards. I have tested "xregister"
but as the help pages say, it will only
accept 1D or 2D images.. Similarly with
"imalign" ..

I could slice the data cube up using
"im...

4371

By: bs_nuig

05/29/2007 04:05PM

ds9Started by:huh?, 05/15/2006 09:10PM
Hi all,

I am new to IRAF and need to do some
data reduction.

I'd like to display my images using ds9
but I don't know how to launch it.

When I type ds9 & in the cl> it
reads: no display name and no $DISPLAY
environment variable.

So how do I r...

4383

By: huh?

05/15/2006 09:10PM

programming nuancesStarted by:Sean, 09/19/2007 02:22AM
Hello,
I have been writing a procedure script
to automatically reduce some optical
data, and I have a few questions about
the iraf programming language which
don't seem to be addressed in "An
Introductory Guide to IRAF Scripts".
First of all, I have ...

4401

By: Sean

09/19/2007 02:22AM

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

By: jim

06/03/2006 08:04PM

geomap surface2 coefficientsStarted by:footstyle, 09/29/2006 11:36PM
What do the coefficients of surface2 in
the *.db file produced by geomap
actually mean or act upon? I have
trawled through pyraf's documentation
and iraf.net questions to find
information about this, but have been
unable to reproduce the behaviour
sugge...

4440

By: footstyle

09/29/2006 11:36PM

Problems with 24-bit Ximtool?Started by:emma, 12/17/2008 09:26PM
Hi there,

I've found a few features which used to
work on the old version of ximtool that
don't appear to work on my installation
of the 24-bit version...I'm hoping
someone else has had these problems
too...

1) Keyboard shortcuts to move through
frame...

4444

By: jturner

12/17/2008 09:26PM

Memory problems in mscred.combineStarted by:dougmink, 02/07/2006 03:47PM
We have just updated our pipeline
computers from 2.12 to 2.12.2a and
are running out of memory when combining
images which are scaled
or combined with anything but a sum or
run in any reject mode. Is there
a buffer size parameter the default
value of w...

4448

By: valdes

02/07/2006 03:47PM

geomap/geotranStarted by:dbrenner, 04/25/2007 03:43PM
I made a blank 512 x 512 image. I added
four psf's near the corners.

Using default settings, I used imshift
to shift the psf's by 0.5 pixels in x
and y.
The psf structure was preserved but
daofind told me I shifted the psf's
0.553 pixels.

I then used...

4466

By: dbrenner

04/25/2007 03:43PM

tfinder issuesStarted by:JoshH, 02/25/2006 04:17AM
Hello,
I was hoping someone could help me
with my tfinder problems. I have
installed tfinder and tables..
everything seemed to go smoothly during
that process. However, now I'm at the
point where I'd like to try to get a
plate solutiong and the tfi...

4476

By:

02/25/2006 04:17AM

normalize data using continuum taskStarted by:, 04/16/2009 02:54PM
Hello all,

I have a couple of spectra with very low
counts in the low wavelength region. I
normalize using continuum task in the
specred package. In the normalized
spectra, the parts with low counts
appear exaggerated (oscillate wildly)
wrt the rest. M...

4478

By:

04/16/2009 02:54PM

mscred - ccdproc bpmasksStarted by:jgallag3, 03/20/2006 06:17PM
Hello,
I am havingtrouble combining my bias
exposures using zerocombine/ccdproc
within the mscredpackage. I am using
IRAF v2.12.2a and the latest version of
mscred (I think).The data was taken on
the kpno 0.9-m with the mosaic imager.
I am getting the ...

4495

By: fitz

03/20/2006 06:17PM

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...

4496

By: pweilbacher

08/02/2006 04:12PM

read & write in fileStarted by:ranisb, 12/02/2008 11:55AM
Hi,
I am writing following procedure
script.I have 3 science frames and one
masterbias.this script will subtract
biasmaster from each science frame and
change file name "sci_bs_%d.fits and
save in file 'objfile'.
The script is as following;
procedure tr...

4510

By: jturner

12/02/2008 11:55AM

guiapps segmentation violation on macosxStarted by:sirmarcos, 02/05/2007 07:10PM
Hello,

I tried the pre-compiled binaries of
guiapps for macosx (ppc) today and all
guiapps programs produced a segmentation
violation. So, I then tried to rebuild
them binaries from the source and
several errors occured, and no
x_spectool.e gets creat...

4528

By: sirmarcos

02/05/2007 07:10PM

help on STSDAS.ISOPHOT.ELLIPSEStarted by:Guest, 10/17/2005 03:26PM
From: Ivo Busko <busko@stsci.edu>
Date: Mon, 17 Oct 2005 08:49:14 -0400
X-Mailer: Mozilla 4.78 [en] (Windows NT
5.0; U)
X-Accept-Language: en
MIME-Version: 1.0
To: llevy@physics.unc.edu
Subject: Re: help on
STSDAS.ISOPHOTE.ELLIPSE
References: <...

4529

By: Guest

10/17/2005 03:26PM

specshift, scombine, etcStarted by:esemenko, 04/03/2007 04:48PM
Hello IRAF users!
I have three questions about spectra
processing and related applications.

First question is about tasks which
allow to perform calculation of shift of
two spectra using cross-correlation or
another method. I would like to compare
two ...

4530

By: esemenko

04/03/2007 04:48PM

Adding in sidereal time to image headersStarted by:massey, 12/31/2008 09:39PM
I'm just back from a Magellan run, and
discovered to my chagrin that my headers
all have a bogus value for the sidereal
time. Everything else is fine,
including the airmass, UT time, date,
etc. I actually discovered this after
running setjd and doslit...

4531

By: AnTaR3s

12/31/2008 09:39PM

xc: Command not found.Started by:fsidoli, 05/29/2008 11:06AM
Hi there,

I'm trying to run a program in/outside
of IRAF that use the portable IRAF
compile/link utility, 'xc'. I can see
that I have the xc.e installed on my
system under
'/iraf/iraf/unix/bin.redhat/xc.e' and
that it seems to be listed under the
softo...

4567

By: fsidoli

05/29/2008 11:06AM

ximtool crashing every single timeStarted by:gcardonav, 04/26/2010 10:40PM
Hi Guys:

I am new to iraf. I was able to install
it with out any issues. I am able to
open packages and run iraf, but when I
try to open ximtool, X11 crashes, every
single time. I am not sure if is an
issue with snow leopard or some
configuration I nee...

4577

By: gcardonav

04/26/2010 10:40PM

Creating those pretty multicolor pict...Started by:jcely, 10/24/2009 04:25AM
Are the "photogenic" multicolored
pictures created in iraf? Or do people
just go to external software like
photoshop or gimp for that?

4577

By: jcely

10/24/2009 04:25AM

another problem with DS9 v5.2 (5.2-2,...Started by:vall, 06/05/2008 08:48AM
Hello,

I have a problem with DS9 v5.2 (on FC9).
When I display an image form IRAF, the
scale menu is no longer disabled (it was
disabled until v5.1), but when I try to
change the image scaling, it takes
forever (and lots of memory and CPU
resources) an...

4585

By: fitz

06/05/2008 08:48AM

spectroscopy: does identify weigh lines?Started by:gfuresz, 05/08/2006 01:22PM
Hi,

Can one tell me if the
identify/reidentify tasks weigh the
lines or not? I have found not much
about it in the help.

The IRAF ThAr line list does not have an
"intensity" column, which would tell
what lines have high counts so therefore
more accura...

4612

By: mz79

05/08/2006 01:22PM

Using defpac functionStarted by:figueira, 01/15/2007 12:51PM
Hello!

I'm trying to make my reduction programs
a little bit robust in order to share
them with my team members. I'm starting
to use tasks such as "defpac" in my
scripts and I have a few problems.
Here is my file for "def_test.cl"

def_test.cl:

######...

4616

By: figueira

01/15/2007 12:51PM

Determining radial velocity with IRAFStarted by:valdes, 09/05/2007 08:49PM
[b:5e31dc4ee8]From:
[/b:5e31dc4ee8]"Roberto Madeira"
<rtmadeira@gmail.com
([email]rtmadeira@gmail.com[/email])>[b:5e31dc4ee8]Date:
[/b:5e31dc4ee8]August 30, 2007 1:44:04
PM MST
[b:5e31dc4ee8]To:
[/b:5e31dc4ee8]fvaldes@noao.edu
([email]fvaldes@noao...

4623

By: valdes

09/05/2007 08:49PM

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...

4626

By: cosmologist

05/24/2011 07:19PM

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