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creating a mosaicStarted by:jellyman, 01/18/2011 06:24PM
Hello.

This might be not a IRAF specific
question, but I thought of asking anyway
( maybe it can be done through iraf ).

I have many fits images, from the same
patch of the sky, obtained with the same
instrument. The astrometry has been done
on them. ...

5215

By: fitz

02/06/2015 05:46PM

creating 3D spectral cubeStarted by:hlandt, 12/27/2006 01:52PM
hi,
how can I create a 3-dimensional
spectral cube in IRAF?
I have several individual 1-dim spectra
and I would like to stack these into a
single file with three dimensions, e.g.,
spectrum[108,10,20] where the first
dimension is the wavelength.

With t...

4807

By: jturner

12/27/2006 01:52PM

Create spiral arms through mkobjectsStarted by:suma99, 08/26/2015 09:46PM
Is it possible to simulate an image
through GALLIST and MKOBJECTS that has
spiral arms? This is what I have tried:

artdata> gallist galaxy1.dat egal=0
xmax=1000 xmin=0 ymax=1000 ymin=0
Number of galaxies in the output list
(20): 500
artdata> mkobj...

970

By: fitz

08/27/2015 12:04AM

craverage and FITS plio masksStarted by:mo, 04/03/2008 09:37PM
Hi Folks,
We've been making good use of
the FITS storage for pl masks.
But we've stumbled with the "craverage"
task. (This is still under
IRAF 2.12 for redhat).
We've add the "fpl" extension to
the fxf in the imextn symbol.
As I underst...

2232

By: mo

04/03/2008 09:37PM

cosmicrays task segfaultsStarted by:Jason Quinn, 09/09/2012 03:31PM
The cosmicrays task is throwing
segmentation violations every time it is
run. Noticed on v2.16 but occurs on
2.15.x. Had to go back to 2.14.1 before
it worked. I'm running a 64-bit Ubuntu
machine, if that helps. The error can be
reproduced using dev$pix...

2366

By: fitz

09/09/2012 03:31PM

cosmicrays ERROR: PLIO: reference out...Started by:dr.michi, 05/12/2014 12:38PM
I am trying to run cosmic rays on 2D
echelle spectra. It has been working
until a recent (minor) setup change: the
2D image got slightly bigger.
I am running PC-iraf 2.16 on a
debian/linux version 6.0.9.
It runs fine if I run a sub image (e.g.
1:500...

1987

By: dr.michi

05/21/2014 01:51PM

cosmicrays - segmentation violation o...Started by:jdahlstrom1, 12/21/2010 11:03PM
Hi,

I have run into a snag in using
'cosmicrays' in the new IRAF 2.15 and
the "macintel" 64-bit Mac OS X download.
If I attempt to run 'cosmicrays' on a
2048 x 2048 FITS image in interactive
mode, the task fails with a
"segmentation violation". However...

7871

By: astropunkin

03/06/2014 03:59PM

cosmicraysStarted by:dbrenner, 09/02/2008 07:28PM
The following script works

#!
/scisoft/all/packages/iraf/irafbin/bin.macintel/cl.e
-f

noao
imred
crutil
printf ("cosmicrays input =
DARKS/DARK_D_71.fits[1] output =
/Users/dsb/DATA/1.1.1/Processed/tmp.fits
interactive = no\n") | cl()

logout

but this...

2091

By: valdes

09/02/2008 07:28PM

cosmicraysStarted by:owen, 04/14/2008 03:00AM
Hi, I have a question that when using
COSMICRAYS task to remove cosmicrays for
2d-spectra before extracting, is there
any possibility to recede some strong
emission lines? That is IRAF may
identify a little strong emission lines
as cosmicrays occasional...

2927

By: Jason Quinn

04/14/2008 03:00AM

Cosmic rays and spectraStarted by:kafeen, 11/04/2007 04:22PM
Does anyone know if there's a particular
cosmic ray removal package that's really
good at removing cosmic rays from
spectra? Thanks!

4345

By: mdg

11/04/2007 04:22PM

Cosmic Rays and apall extraction of l...Started by:lchomiuk, 02/24/2010 04:14AM
I'm extracting some rather low
signal-to-noise spectra with apall, and
I've noticed that cosmic rays (either on
the source spectrum or in the background
region) have a very strong and
distorting effect on the extracted
spectrum. I get large narrow spike...

2853

By: valdes

02/24/2010 04:14AM

Cosmic RaysStarted by:Nishkin, 07/04/2006 03:03PM
Hi all,
I seem to have a problem when I
want to remove cosmic ray. I use the
task cosmicrays but it seems not the
remove much...I do not run the task
interactively since I do not understand
much what to do in there.
I know they are cosmicrays and...

2716

By: fitz

07/04/2006 03:03PM

cosmic ray removal helpStarted by:mnicholls, 11/25/2013 03:06PM
I'm very new to IRAF and need to remove
Cosmic Ray hits from my spectra (all
spectra are saved as .fits files and
therefore come in both 1 and 2
dimensions, with various amounts of sky
subtraction, but I'm sure this is a well
known aspect to all you exp...

3709

By: fitz

11/26/2013 05:25PM

Cosmic ray removalStarted by:Guest, 10/10/2005 09:16PM
[b:3401995173]From:
[/b:3401995173]mansie
<mansie@astro.indiana.edu
([email]mansie@astro.indiana.edu[/email])>
[b:3401995173]Date:
[/b:3401995173]October 10, 2005 7:23:43
AM MST
[b:3401995173]To: [/b:3401995173]Frank
Valdes <valdes@noao.edu ([e...

3181

By: Guest

10/10/2005 09:16PM

Correcting Row Offsets?Started by:joshw, 01/29/2006 10:23PM
I've got some images which suffer from
time variable noise which offsets each
row of pixels by a small amount from the
rows above and below it. The noise can
be corrected in most cases by adding a
small offset to each row such that the
median of the ro...

6399

By: joshw

01/29/2006 10:23PM

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

By: valdes

05/27/2011 05:42PM

copy headerStarted by:Alextreme, 04/25/2015 04:42AM
how can I copy all the headers from a
image to other image with IRAF?

1812

By: fitz

04/26/2015 01:01AM

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

By: fitz

04/24/2011 11:31PM

ConvolutionStarted by:rrdecarvalho2009, 01/15/2009 01:11PM
Does anyone know how to convolve (in
iraf) a spectrum with a gaussian where
the FWHM varies with lambda ?

Reinaldo

3709

By: valdes

01/15/2009 01:11PM

Converting new type DATE-OBS to UTStarted by:tonisee, 05/14/2008 08:57AM
Hello!

In the headers of my FITS files, only
DATE-OBS keyword in the new format is
presented, it is already in UTC, e.g.:
DATE-OBS = '2008-05-14T08:57:00'

Since many tasks need keyword UT, it's
probably most easiest to write small CL
script which pars...

4159

By: tonisee

05/14/2008 08:57AM

converting from .imh to .fitsStarted by:massey, 05/21/2007 01:38PM
Mike, et al---

Sorry to ask such a simple question, but
this one has been confused. I have
a bunch of old blah.ms.imh files, and
I'd like to convert these to fits
(blah.ms.fits). So I did the following:
files *%.imh%% > old
imrename @old//.imh @old/...

6896

By: massey

05/21/2007 01:38PM

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...

3000

By: fitz

06/01/2006 07:38PM

Converting Fits file into ASCII formatStarted by:rohit, 10/31/2006 04:34PM
Hi All,

I have a fits file. It is actually a
spectra. When I use splot
<filename>.fits I get a plot of
spectra of an object which is normalized
amplitude (y-axis) versus wavelength
(x-axis). I would like to extract the
data, get two columns one ...

4834

By: rohit

10/31/2006 04:34PM

converting *coo or *mag files into re...Started by:rebull, 12/08/2006 08:51AM
Hi -

I'm looking for an IRAF task that will
take the output of daofind or phot (or
for that matter txdump) and make a
regions file so I can overlay it on the
image in ds9. I've RTFM'd to no avail.
This must be something that every single
astronomer d...

2455

By: fitz

12/08/2006 08:51AM

Convert spectrum to velocityStarted by:malte, 12/17/2007 01:08PM
I want to transform a spectrum's
wavelength axis to velocity relative to
a specified spectral line.

Splot does this with its command v, but
I'm looking for something a bit more
like scopy. Scopy looks like it might
do the trick, but I'm not clear on...

4656

By: valdes

12/17/2007 01:08PM

convert FITS imageStarted by:sarahf60, 04/19/2011 12:08PM
I have some density contour FITS images
which I want to convert them to ASCII
file . is it possible to do it by
iraf?how?

2163

By: fitz

04/19/2011 12:08PM

convert FITS file to ASCII table with...Started by:iraf_astro, 12/27/2015 08:16PM
Hi,

I have searched through IRAF to find out
a routine which would list out all the
pixels and the counts associated with
them for a fits image, but I could not
find anything. I would like to compare
my model image (with WCS coordinates) to
a real im...

2238

By: fitz

12/27/2015 10:08PM

contour plottingStarted by:Pawade Vishal, 01/02/2008 10:40AM
How can i plot new contour of nebula ?
let....i want to plot contour for
surface points (x,y) in magn/arcsec^2.
then How can I made the surface
magnitude image.?
& how can i fit the parameters ?

2035

By: fitz

01/02/2008 10:40AM

continuum of a spectrumStarted by:kwkchan, 12/07/2009 09:10AM
Hi Does anyone know how to find the
continuum of a spectrum with iraf?

2001

By: fitz

12/07/2009 09:10AM

Constant value substitution for pixelsStarted by:sa14722, 12/11/2014 07:21PM
I'm new to iraf so please pardon me if
this is perhaps a silly question.

So I have an image which has a diagonal
region of bad pixels. I have created a
text file which contains a list of the x
and y positions of all these bad pixels.
I am trying to r...

1848

By: sa14722

12/12/2014 03:12PM

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