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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!

1763

By: fitz

06/25/2011 03:17AM

Finding fluxStarted by:kwkchan, 10/02/2009 11:39AM
Hi :) I am a absolute beginner iraf
user. I am trying to write a cl script
that would allow me to find flux of a
certain emission line on a spectrum. But
don't really know what to write in the
script :( . Grateful if somebody could
help.

1766

By: kwkchan

10/02/2009 11:39AM

batch filter header key modifyStarted by:Santiago, 11/26/2008 12:07PM
is there any way to modify the fits
header of a set of images like the
"setairmass" task? that calculates de
mid-exposure air mass and adds it as a
key in the header.... i need to modify
the filterId, example "R" to an other
filter... the same on all im...

1768

By: fitz

11/26/2008 12:07PM

Problem with Image CursorStarted by:makhlaghi, 02/09/2011 03:58AM
Hi,
I am using a 64bit Fedora 14, with 64bit
IRAF 2.15.1, I am totally new to IRAF
and I was running some sample
instructions to learn the tasks, my
graphics cursor works fine, for tasks
like "implot" or "contour" but all the
tasks, most notably "imexam...

1772

By: fitz

02/09/2011 03:58AM

Image ScalingStarted by:AstroHokie, 04/14/2009 05:56PM
I have images taken with two different
cameras. The plate scales of the two
sets of images are different (one camera
has a scale of 1.6 arcmin/pixel while
the other has a scale of 1.21
arcmin/pixel). I need to create a mosaic
of the sky with these two i...

1773

By: fitz

04/14/2009 05:56PM

Problem with `scombine' option `rejec...Started by:fschweizer, 07/01/2010 01:44AM
I am trying to use `scombine' in
`echelle' to combine the various
orders of a flux-calibrated MagE
spectrum in MS format into a
single 1D spectrum on a linear,
equidistant wavelength scale.

When I `scombine' the object or sky
orders with the following
...

1775

By: fschweizer

07/01/2010 01:44AM

Wavelength Dispersion ErrorStarted by:rohit, 05/04/2009 06:23PM
I have used ecidentify and ecreidentify
for high-res IR spectra. I would like to
compute the wavelength dispersion error
that I get from wavelength solution.
Could you please let me know how to find
that for each order?

1781

By: valdes

05/04/2009 06:23PM

ds9's object field (problem with IRAF...Started by:Jason Quinn, 10/09/2008 08:24PM
I noticed that ds9 is no longer
displaying the "OBJECT" keyword in the
"Object" field when I display an image
from within IRAF using the display task.
(Now that I've noticed this, I think
it's been MIA for quite some time.) The
information is displayed ...

1783

By: fitz

10/09/2008 08:24PM

doecslit - aprefStarted by:IvanRamirez, 10/17/2008 12:49PM
Hello,

I extract my echelle spectra using
doecslit after flat-fielding and
scattered light correction, i.e., all
frames had their apertures "defined"
already with apall (found and traced).
When I use doecslit, IRAF crashes if I
don't provide the apref ...

1786

By: valdes

10/17/2008 12:49PM

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 ...

1790

By: fitz

06/27/2011 07:13PM

help with daophotStarted by:Guest, 11/07/2008 12:45PM
Dear iraf team,
I have a problem in entering in the
daophot task.

I can enter in apphot, but not in the
other 3 tasks inside digiphot.
This is the error I get:
"
ERROR on line 16: task `tables' has no
param file
daophot ()
"
The same for photca...

1790

By: fitz

11/07/2008 12:45PM

help with rvsao.sumspecStarted by:marco.03, 01/09/2011 10:38PM
Hello. I am new to the forum, and hope
you can help clear some doubts I have
with the sumspec task of the rvsao
package.

I am trying to create a template
spectrum from five individual spectra of
the same object. For each of these I
have computed the ba...

1795

By: marco.03

01/09/2011 10:38PM

Allstar-problemStarted by:k_emma, 08/10/2010 05:51PM
Hi, I have a problem when I'm using the
noao/digi/dao/allstar-task.
I'm created a shell-script, what
generated a command-file for allstar,
based on an imexam log-file(containing
FWHM, sigma etc... data).
For example it is a line of this
command-file:

...

1795

By: k_emma

08/10/2010 05:51PM

IRAF spectra errorStarted by:uros, 03/12/2017 11:11PM
Hi,

please can someone help me to understand
how IRAF calculate errors of my
extracted spectrum.

After I finish with spectra extraction
in IRAF at the end I will get wavelength
and flux calibrated spectra. This
spectra is fits file where I have 4 ...

1797

By: fitz

03/13/2017 03:38AM

how to put labels using plot tools wi...Started by:masa, 03/29/2008 03:55AM
Dear iraf users,

Please tell me how to put labels using
plot tools
without noao.onedspec.identify.
I would like to put labels (wavelength
and elements)
with tick marks on the 1-D spectra.
Yes, I know that identify can put labels
on the
spectra by "...

1797

By: valdes

03/29/2008 03:55AM

Problem with large FITS binary catalogStarted by:Quietskies, 07/23/2009 11:07AM
Hi, Everyone

I met some problem when I tried to use
the tasks from STScI Tables package to
read the FITS binary catalog from
NYU-VAGC catalog:

http://sdss.physics.nyu.edu/vagc/

The tasks failed to open the
object_sdss_spectro.fits file whose size
is ...

1798

By: Quietskies

07/23/2009 11:07AM

apall not extracting multi-spectraStarted by:lwinter, 12/18/2009 11:35PM
Hello.

I am having a problem with the updated
version of iraf (12.1.1) where
apall appears to be extracting only the
source spectrum without the
sky or error. The resultant file from
apall is an ms.fits file,
generated with apall with the extras...

1799

By: lwinter

12/18/2009 11:35PM

saturated stars and DAOPHOT PEAK taskStarted by:vall, 05/22/2012 09:09AM
Hello.

I am puzzled by the behavior of the
DAOPHOT PEAK task. It seems that it
tries to fit stars that are saturated
and even measures their magnitudes. I
have set the saturation limit
("daopars.datamax") correctly. PHOT
gives INDEF for the saturated...

1801

By: vall

05/22/2012 09:09AM

Allstar output formatStarted by:jacom, 10/25/2011 09:02AM
Hi,

Can anyone please tell me where I will
be able to change the photometry output
format of allstar task to more decimal
digits.
I have already done that for the
aperture photometry output in the file
"apwres2.x" but cannot find the file
that writes t...

1802

By: jacom

10/25/2011 09:02AM

Daophot - convert pixel values to ra ...Started by:phy2j2s, 04/30/2009 01:44PM
Hello,

I am not the most experienced user with
iraf so sorry if this is very basic.

I have performed my own photometry on a
fits file using Daophot (IRAF v2.14.1)
following the IRAF/DAOPHOT package
reference guide by Lindsey Davis.

I have reached the...

1804

By: fitz

04/30/2009 01:44PM

wspectext and list filesStarted by:GalisBG, 10/15/2015 03:54PM
Hi there,

I'm trying to export as text files a lot
of reduced 1d spectra distributed in
different folders using wspectext with
list files for input and output
containing the full path of the fits and
txt files

It works well with reading this list ...

1807

By: GalisBG

10/22/2015 10:09AM

imcombine memory problemStarted by:neilzim, 09/29/2008 10:24PM
I'm trying to use the following script
to median three images:

[code:1:4908223358]
#! /iraf/irafbin/bin.macintel/cl.e -f

noao
images
immatch
printf ("imcombine @darkin.lis
darkout.fits\n") | cl()

logout
[/code:1:4908223358]
...

1809

By: neilzim

09/29/2008 10:24PM

Adding external packageStarted by:deathfriend, 02/04/2008 03:22PM
I recently updated my Gemini package,
and niriclean no longer works. It is in
the iraf/extern/gemini/niri directory,
but doesn't show up in IRAF. I am
fairly new to this. Is there some sort
of index file that needs to be updated?
The niriclean packa...

1810

By: fitz

02/04/2008 03:22PM

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

1813

By: fitz

04/26/2015 01:01AM

problem with darkcombineStarted by:cosmologist, 02/26/2011 08:16PM
I don't know why I have this problem
with darkcombine:

[code:1:e9da53a770]

epar darkcombine

input = dark* List of
dark images to combine
(output = Darkn1)
Output dark image root name
(combine= ...

1813

By: AnTaR3s

02/26/2011 08:16PM

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...

1815

By: valdes

05/18/2011 04:34PM

ccdprocStarted by:cosmologist, 01/20/2010 08:40PM
Hi,

When I use ccdproc (leaving the output
blank) I would expect iraf to overwrite
my files and save them under the same
name... Something weird happens though;
it transforms the fits files into pix
& imh files.... any idea why???
:cry: :cry: :c...

1815

By: cosmologist

01/20/2010 08:40PM

Calling daoedit from within CL scriptStarted by:JanRap, 03/19/2010 02:39PM
Hi, I hope I'm posting this in the
correct forum.

I am trying to call the 'daoedit' task
from within a CL script, but I am
struggling with the syntax.

Firstly I created a .coo file containing
the coordinates and type (target,
comparison or standard) o...

1817

By: fitz

03/19/2010 02:39PM

pexamine - marking objectsStarted by:kanaan, 06/30/2008 11:20PM
pexamine:

in both graphical in image mode I press
'o' and get:

COLUMN VALUE (UNITS)

ID 2502. (##)
XCENTER 972.486 (pixels)
YCENTER 1987.687 (pixels)
MSKY 1163.871
(counts)...

1818

By: valdes

06/30/2008 11:20PM

Is anything wrong here?Started by:dbrenner, 04/27/2009 05:06PM
procedure test

struct *imglist

begin
string img

imglist = "filenumbers.lis"

while(fscan(imglist, img) != EOF)
{
print(img)
}
end

1820

By: dbrenner

04/27/2009 05:06PM

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