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CCDPROC and Zero/flatcombine QuestionStarted by:chaorun, 05/10/2016 05:35PM
Hello everyone.
I am a new graduate student, Use
irafv216 in MacOS 10.11.4.
My Question is :

When I process FITS files using CCDPROC,
ZEROcombine,flatcombine.
I will get the good output files.
BUT there is no screen output to show
what the progra...

735

By: fitz

05/11/2016 05:11PM

No command line for xgtermStarted by:JoshuaJoseph, 04/30/2016 04:40AM
I have installed IRAF on Mac (I needed
to disable the SIP firstly to allow
mkiraf to install the iraf.h file in
/usr/include/) and when I open an xgterm
and 'ecl' to open IRAF, I get this
window:

[img]/Users/joshuajd/Desktop/iraf_screenshot[/img]
...

819

By: fitz

05/05/2016 10:21PM

IGI doesn't start...Started by:fabvitali, 04/29/2016 09:05AM
Dear Sirs,

I have set up an automatic procedure to
reduce the infrared images from the
REMIR camera at REM (La SIlla). In this,
I would like to use the IGI graphic
interpreter but I can’t even start
using it. I am using the EXPORT V2.15.1a
IRAF ver...

630

By: fitz

05/05/2016 10:09PM

Which precession model?Started by:Sergei Schmalz, 01/17/2016 10:45PM
Hello!

Which precession model is used by the
'precess' task of the 'noao.astutil.'
package? If it's the one suggested by
the IAU in 1984 (based on IAU 1976
system of astronomical constants), then
are there any plans to replace it by a
newer model IAU...

831

By: fitz

01/17/2016 10:58PM

FITS kernelStarted by:shaw, 12/21/2015 10:52PM
I'm trying to select FITS MEF files
based upon information that is split
between the PHDU and the HDUs. For
whatever reason, the file from the
(Gemini) archive has INHERIT=F. I
thought clever use of FITS kernel
features would allow me to use hselect
to ...

824

By: fitz

12/22/2015 03:10AM

rotate a FITS file and update the WCS...Started by:iraf_astro, 12/05/2015 07:17PM
Hi,

I had been struggling with the following
problem. I have a FITS image, which I
would like to compare to another FITS
image. I found the task " imrot" in IRAF
under wcstools, which performs this
task, but unfortunately only for
multiples of 90. I ...

1958

By: fitz

12/05/2015 07:41PM

Analysing FITS files with WSTART1Started by:jsmoker, 11/17/2015 12:03PM
Hello,

I am working on some data reduced with
the UVES pipeline. The "merged" spectrum
produced by the pipeline has ripples in
it hence I am hoping to do the last part
of order merging "by hand" in IRAF.

The fits file contains 20 different
orders,...

2027

By: fitz

11/20/2015 04:55PM

Error : no release file Started by:AndyR, 10/22/2015 09:28PM
Greetings,

I was successful install IRAF on my mac.
Upon typing cl when it says welcome to
IRAF etc.

Along the lines it says, Error : No
release file

Does anybody know what this is and why?
I would appreciate any recommendations
to how to fi...

1690

By: fitz

10/23/2015 06:43PM

2D image change unitsStarted by:sscibell, 10/12/2015 10:38PM
Hello,

Is there a task in iraf that can convert
units of a 2D image? For example, from
deg vs. wavelength to arcsec vs.
velocity?

Thanks!
SS

662

By: fitz

10/21/2015 04:01PM

imarith help fixStarted by:Jason Quinn, 09/30/2015 09:40PM
In example 4 in imarith's help, the
pixtype and calctype values are
switched. The command should read

[code]
cl> imarith image1 / image2
image3 pixtype=short \
>>> calctype=real
title="Ratio of image1 and image2"
[/code]
...

697

By: fitz

09/30/2015 10:34PM

How to select objects which match the...Started by:constant, 09/26/2015 01:49PM
Hi,

I use noao.digiphot.daophot.psf task to
get psf image of a object. I want to
select objects which match the psf.

Which task or package can help me do
this job?

Thanks!!

Weida Hu

695

By: fitz

09/29/2015 05:04PM

n2gaussfitStarted by:sscibell, 09/25/2015 10:35PM
Hello,

I am new to using the n2gaussfit task
and I was wondering if, for example, if
when you type the command:

n2gaussfit image.fits[134:153,367:409]
out.dat

Is it creating a 19x42 box to then fit a
2D Gaussian to? So do the Xcent and
Ycent va...

828

By: fitz

09/29/2015 05:32PM

Three computers in the same office no...Started by:andrej, 09/21/2015 08:10PM
Greetings.
There are three computers in my office
and I am in the process of testing IRAF
with it. I am working to get IRAF
installed on another laptop, and I am
testing a working copy on my linux box.

I noticed, however, that even my
"working" copy...

1487

By: fitz

09/21/2015 08:13PM

Getting rid of standing wavesStarted by:sscibell, 09/18/2015 08:46PM
Hello,

Is there is a way in iraf to get rid of
standing waves in spectra files?

Thanks!
S

674

By: fitz

09/18/2015 11:12PM

Setting daopars.maxnstar in PyRAF to ...Started by:debrunlm, 09/16/2015 02:28PM
Hi,

I have been having an issue trying to
set daopars.maxnstar to a higher value
than the default of 50000 in PyRAF. In
the script I have
iraf.daopars.maxnstar.p_max = 200000
this results in the following error.

Traceback (innermost last):
File...

741

By: fitz

09/16/2015 07:53PM

Can you automate an imexam task?Started by:sscibell, 09/06/2015 08:07PM
Hello,

Is it possible to automate a cursor
command in imexam so it can be
incorporated into a script? It seems
that you can do this if you give image x
and y positions and then the key stroke.

However, I am trying to determine the
y-location of a...

1023

By: fitz

09/10/2015 04:23PM

Need to find 2nd highest peak in a do...Started by:raybutler, 09/04/2015 08:10AM
Hi,

Normally I can script my way out of
trouble, but I've been struggling with
this for a while.

I need to be able to automatically find
the 2nd highest peak in a double-peaked
graph/histogram - like the peak at z ~
700 in the following screengrab...

2053

By: fitz

09/05/2015 10:03PM

imcopyStarted by:sscibell, 09/03/2015 04:50PM
Hello,

I am trying to use imcopy to copy a
portion of a file but when I do that,
for example:

imcopy big.fits[1:1201, 400:799]
small.fits

I get the following error:

ERROR: too many positional arguments for
'imcopy'

Any idea why I am getti...

1392

By: fitz

09/03/2015 04:52PM

Meta codeStarted by:stefano, 08/26/2015 12:05AM
Hello,

I would like to know if there is a way
to read the contents of a meta file. In
particular, I am interested in the meta
code generated by the task "FITPROS". It
shows the fit, continuum and data all in
the same plot. I would like a way to
read ...

625

By: fitz

08/26/2015 04:04PM

dispersion axis in iraf of UrekaStarted by:haha, 07/06/2015 11:52AM
It seems there is no effect if I use
noao.twodspec
apextract
apextract.dispaxis=2
when the dispersion axis is along
columns.

I am using IRAF in Ureka.
How to set the dispersion axis exactly?

792

By: haha

07/06/2015 12:53PM

Imarirth outputting an MEFStarted by:jbs045, 06/18/2015 03:43PM
I'm a Pyraf user, and I think that it
may have something to do with my
problem, but I am using imarith to
multiply a constant by a non MEF fits
file, and for whatever reason, it is
outputting a MEF when I don't want to
it. Here is my surrounding code:
...

943

By: fitz

06/30/2015 05:47PM

SNR calculation in splotStarted by:gmaravel, 06/16/2015 04:59PM
Hi!

I know that the "m" keystroke in splot
gives the rms and snr of a spectrum.
However, I would like to understand how
this is calculated, but there is nothing
(obvious at least) at the help page of
splot.

I did a searvh in the forum to see if
...

3457

By: fitz

06/16/2015 05:05PM

SAOImage DS9 7.4b1 is availableStarted by:joye, 06/03/2015 03:31PM
SAOImage DS9 7.4b1 is available at
http://ds9.si.edu/site/Beta.html.

This version contains a number of bug
fixes address issues with IRAF. In
particular, connection issues between
DS9 and IRAF have been corrected.

Regards

bill joye

748

By: fitz

06/03/2015 04:26PM

IRAF v2.16.1 error running a shell sc...Started by:lau_sev, 03/24/2015 10:05AM
Hello,

I've tried to run a shell script which
calls IRAF to do some tasks. However, it
does not work. When i run it, IRAF is
opened and then it gets blocked doing
nothing. It does work in computers with
IRAF v2.14.1 but i've tried it in two
different...

14577

By: fitz

03/26/2015 07:24PM

Garbage output when using imexamStarted by:EmilyDick, 02/10/2015 11:05PM
Hello,

I am using Cygwin on a Windows 8.1 to
run iraf and ds9. I used this tutorial
for the download:
http://www.iac.es/sieinvens/siepedia/pmwiki.php?n=HOWTOs.IrafCygwin

I am having trouble when using imexam on
an opened image on ds9. There is garb...

991

By: fitz

02/10/2015 11:11PM

longslit/fitcoords error Started by:Kati, 02/10/2015 07:17PM
Hi,

I'm having troubles with the
longslit/fitcoords task. Below you can
find the parameters I use for the task.

The input spectrum is called
fb0057.image.fits, the reidentify task
stores the data in
database/idfb0057.image. The output is
the follow...

2038

By: HeisenbergK

09/20/2017 04:39AM

Plotting a binary tableStarted by:tobita, 02/02/2015 04:42PM
Hi people. I'm completely a newbie in
IRAF. Currently I have a FITS file with
a binary table with 7Fx420R dimension in
its first extension (by the way, I know
that 'F' refers to columns, but what
does 'F' actually stand for?) . What I'm
trying to do is ...

2896

By: fitz

02/06/2015 09:53PM

listing pixels in a circular apertureStarted by:nk, 01/16/2015 12:57PM
Hello

Is there any way in iraf to list pixels
in a circular aperture (defined by its
radius) ?

(as far as I know, "listpix" in iraf
allows to list pixels either for the
whole image or for a rectangular area)

Thank you

1085

By: fitz

01/16/2015 04:38PM

Basic questions How to define string ...Started by:andrej, 12/15/2014 06:13PM
Greetings. I am struggling so much to
find some basic information but when I
run a bunch of general internet
searching, and search through the manual
and the help in IRAF itself, I can't
find answers to some basic things (tried
on a few different days a...

1852

By: fitz

12/16/2014 04:23PM

splot output fileStarted by:Alaa, 12/14/2014 06:44PM
Hello,
I need some help regarding splot. I'm
looking for a way to control the output
file of splot task.
I use the following command to analyze
my spectrum and save the results to the
output file of the splot

> splot spec1.fits
save_file="spec1-s...

1858

By: fitz

12/15/2014 05:01PM

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