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Using ascii data filesStarted by:Astros, 04/16/2009 08:16PM
I have spectral data in ascii files that
I need to input in IRAF so that I can
use splot to determine the area of my
absorption bands.

What do I need to do to get the ascii
files into iraf?

1618

By: fitz

04/16/2009 08:16PM

using colbiasStarted by:fitz, 11/30/2009 04:05PM
hi,
i'm an IRAF beginner and currently going
through the exercises tutorial. my
problem is : why do we fit a chebyshev
function of order 1in the "colbias"
section? why not a legendre or spline?
is it because we are using an averge?
please help....

1414

By: fitz

11/30/2009 04:05PM

using imexam with ra/dec coordsStarted by:jcadien1, 07/21/2015 03:32PM
For a long time I have used imexam in
bash scripts, passing to it coords in
x,y format. I now would like to use
ra/dec instead. I have tried this and I
get garbage output. I have played with
the wcs parameter, as well as the
formats. Nothing works. Whe...

694

By: jcadien1

07/21/2015 03:32PM

Using Imstat in scriptStarted by:smp, 04/21/2009 08:19AM
Hi,

If I run the following script, I get the
error message:

[quote:60df9fc34d]ERROR on line 16: FXF:
number is not a decimal
mean ()[/quote:60df9fc34d]

Script is:

[code:1:60df9fc34d]procedure mean
(input)

string input
int max_lines

beg...

4212

By: smp

04/21/2009 08:19AM

using rd2xy taskStarted by:navarete, 07/20/2010 03:34PM
Hi there!
I'm using the rd2xy task to get the
pixel position of a given RA and Dec in
the image. The aim is to develop shifts
between different images.
The procedure I'm trying to do is:
1 - read a list of files containing
shifted images
2 - get the RA ...

1772

By: fitz

07/20/2010 03:34PM

V16 "vocl" promptStarted by:massey, 06/10/2012 09:53PM
I just installed the 64-bit version of
V16 on my MacBook Pro. Is there a way
to change the prompt so it says "cl"
again rather than "vocl"? I realize
that this may purely be MY problem, but
I've always viewed the "virtual
observatory" as being primari...

3131

By: massey

06/10/2012 09:53PM

v2.15 would not display imagesStarted by:vall, 01/10/2012 08:14AM
Hello,

I have a set of fits images that v2.15
(64bit version on 64bit F16) wouldn't
display. It just returns SEG. FAULT.
This is the header of the images:

[quote:afabd20fe8]
SIMPLE = T / file
does conform to FITS standard
...

5366

By: jraclarke

01/10/2012 08:14AM

v2.16 background jobsStarted by:duvall, 07/04/2012 03:43AM
I just installed the 64-bit v2.16 system
on one of our linux systems. Much seems
to work fine, but when I try to put a
job in the background (with &), I
get the following message:
BKG ERROR: new CL installed; logout and
try again

I have tried logg...

5423

By: olebole

02/05/2018 09:55AM

Variable star search, methodsStarted by:Fenris, 06/18/2007 04:19PM
I have a set of observations of two
spherical galaxies, from which I wish to
investigate the presence of variable
stars and plot mainly luminosity vs
period for any that I might find. I have
data from six nights of observations,
some of which is mostly ...

2821

By: valdes

06/18/2007 04:19PM

variances of images and storing them ...Started by:smp, 03/01/2010 01:18PM
Hi,

[b:fa11229b39]What my script
does?[/b:fa11229b39]
Follwoing procedure script finds std.
deviation of each image.
Then square it to calculate variance of
that image.
Then pass this variance to a text file.
This is done for all the images in the
imag...

1653

By: smp

03/01/2010 01:18PM

Various small help fixes for next rel...Started by:Jason Quinn, 10/24/2011 01:55PM
Here are a bunch of small fixes, mostly
dealing with help database issues:

The UTILITIES package has a handful of
issues:

1) "help detab option=source" is
looking for "detab.x" when it should be
"t_detab.x"

2) "help entab option=source" is looking
f...

4627

By: fitz

10/24/2011 01:55PM

vector graphicsStarted by:myravian, 04/23/2008 10:01PM
Hi,

I'm new to this forum and to IRAF... I
('m trying to) use IRAF to read a
spectrum (from the telescope IUE). So I
downloaded iuetools, stsdas, and tables.
When I use sgraph, it tells me that:
ERROR: Terminal does not support vector
graphics

I trie...

2224

By: myravian

04/23/2008 10:01PM

ver 2.15 patch 1Started by:rjvo, 01/26/2011 08:21PM
I have a question to the patch #1. It is
not clear which files to apply. Does the
name ...all... means that all must apply
this patch and then other patches?

I suppose the ...64.gz is a ...tar.gz
file; why there is no standard
extension?

The files ......

1748

By: fitz

01/26/2011 08:21PM

Version 2.16 seems not accept FITS ex...Started by:wu_qso, 04/18/2013 09:37AM
Hi everybody,

I have several multi-extension FITS
images. I want to use
noao.imred.echelle.apflatten to check
the flat image. Here is the command and
the output of IRAF:

[code:1:1da3f183d6]echelle> apflatten
HDSA00010439.fits[0]
Searching a...

1704

By: fitz

04/18/2013 09:37AM

very long xgterm windowStarted by:pskoda, 06/14/2006 11:07PM
Hi all,
I wanted to work with a long part of
merged echelle spectra (having about
5000 points) not loosing the resolution
by calling

xgterm.bin -G 7000x400+10-10

It produces long graphics window (after
starting the plot commands)
hopefully 7000 poin...

3764

By: fitz

06/14/2006 11:07PM

Want to help spellchecking of help filesStarted by:Jason Quinn, 02/01/2008 10:34PM
Fitz,

I'd like help polish IRAF by spell
checking the help files. Would you be
interested in such an offer?

My plan would be to use
[b:0c4263342b]aspell[/b:0c4263342b] on
the files. It's actually quite quick and
easy and takes only a minute or so
per...

3022

By: fitz

02/01/2008 10:34PM

WANTED someone in the Tucson area to ...Started by:Tom Kaye, 04/06/2008 12:46AM
Hello All,

I am willing to pay 100 dollars an hour
with a 150 minimum for someone to
install Cygwin IRAF on my Windows XP
system. I can bring the computer to you.

Please email me at tomattomkayedotcom

Thanks,

Tom Kaye

4796

By: Tom Kaye

04/06/2008 12:46AM

Warning Message: FXF: must specify w...Started by:smp, 06/27/2011 04:15AM
Hi,

I have a multi-extension fits file. It
contains 5 frames, indexed from 0 to 4.
I want to find average of these 5
frames. So I used the task IMCOMBINE.
Keeping all the parameters of this task
unchanged ( kept default parameters)
execept input and ou...

14945

By: fitz

06/27/2011 04:15AM

Warning: Cannot open image (biasmos.l...Started by:5208, 07/08/2014 08:18PM
So I am trying to combine mosaic bias
frames, and I have created a list of the
images I need:
> ls iff*_gapmos.fits >
biasmos.list

I then ran "imcombine":
> imcombine
List of images to combine:
biasmos.list
...

2688

By: 5208

07/10/2014 03:37AM

Warnings and Error With DAOFIND and PHOTStarted by:RMoore, 03/18/2010 09:08PM
I've been using PHOT for a bit and
getting warnings of the following:

WARNING: Graphics overlay not available
for display device
WARNING: Image <filename> Keyword:
not found

The warnings don't seem to hinder the
working of PHOT (that I've notice...

4834

By: fitz

03/18/2010 09:08PM

Wavelength and spectrum separatedStarted by:yaelnaze, 11/30/2009 02:02PM
Hello,
I've an echelle spectrum (flux = fct of
pixel number) on the one hand, and
wavelength calib (lambda = fct of pixel
number) on the other. Both are provided
as fits files (in multispec format).

How can I associate them without fitting
the wavele...

1671

By: fitz

11/30/2009 02:02PM

wavelength calibrationStarted by:donzelli, 05/31/2010 12:08PM
Hi,
I'm looking for information on how to do
the wavelength calibration to a 2-dim
image spectrum.
I used to extract the spectrum from a
2-dim image using APALL and then
do the wavelength calibration. It would
very useful to do the wavelength
calibrati...

2772

By: donzelli

05/31/2010 12:08PM

wavelength calibrationStarted by:amalmirando, 02/26/2010 07:17AM
hi,
i'm currently going through exercises in
wavelength calibration using IRAF.i'm
studying the conventional tutorials but
they seem inadequate in giving a deep
understanding on what's really
happening. are there any documents on
wavelength calibration ...

1435

By: amalmirando

02/26/2010 07:17AM

WCS angleStarted by:christian, 05/19/2010 01:37PM
Hi,

I am currently trying to co-add a few
images taken with different angles of
the wcs north axis in regard to the x/y
image axes. So I looked around for a
simple IRAF task, which would give me in
some way the angle between the image
coordinate system...

1861

By: AnTaR3s

05/19/2010 01:37PM

WCS Coordinates with IRAFStarted by:AnTaR3s, 05/07/2010 03:29PM
Hi

I have a little problem with a WCS
calculation in IRAF. What I have are
images without any information on RA/Dec
Coordinates, so I used the ccmap utility
within images.imcoords package. There I
can define some 'standard' stars with
given pixel and W...

3916

By: fitz

05/07/2010 03:29PM

wcs for mosaic 3.0 Started by:prasadh, 07/04/2017 05:47AM

1.
I am trying to update the WCS for
my mosaic images. I followed the
document here
http://iraf.noao.edu/projects/ccdmosaic/astrometry/astrom.html#physical
and Used MSCTPEAK task to make the
wcs databse file and updated the W...

1496

By: prasadh

07/07/2017 04:38AM

WCS questionStarted by:Guest, 12/08/2007 12:48AM
Travis Rector suggested that I send this
question to you...

We are trying to understand a particular
aspect of WCS header
construction and interpretation.
Suppose that you have a very simple
header where only the diagonal elements
of CDn_n (or the...

4465

By: valdes

12/08/2007 12:48AM

wcs registrationStarted by:Pawade Vishal, 01/28/2008 06:13AM
how can we make wcs registration for an
image?

2070

By: valdes

01/28/2008 06:13AM

We must face it: IRAF sucksStarted by:mlgubolin, 04/27/2018 10:17PM
Hi guys! How are you? :)

After this catchy title I really want to
discuss something really serious, which
is how old and outdated IRAF's code is.

I mean, the code itself is excellent,
but it was written in a completely
different era and a total re...

1945

By: robsteele49

07/05/2018 05:07PM

Weird problem after an upgradeStarted by:zabot, 10/26/2007 07:16PM
Hi,

I did an upgrade from kubuntu feisty to
gutsy and suddenly my
iraf stopped working (in fact I'm not
sure the upgrade is guilty since
there was some weeks I didn't use iraf).

Anyway. Before bothering you I tried to
uninstal and install iraf again....

2812

By: zabot

10/26/2007 07:16PM

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