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Last Post

fitsky with a maskStarted by:vsravani, 10/02/2013 05:36PM
Hi..
I am trying to obtain the skyvalue using
fitsky. There is a bright source in the
annulus region that I considered. So, I
masked those pixels using fixpix task.
The fixpix task created a new fits
image. I used this new image as input
to the fit...

706

By: fitz

10/22/2013 10:00PM

Ignoring a given pixel value when dis...Started by:vickys, 02/26/2014 12:49AM
I'm working with the command line
version of daophot (not iraf) and when I
run allstar some pixels in the
subtracted image are given a value of
-1E19. Up to now I've been using
imreplace to switch these pixels to zero
so I can display the image properly...

713

By: fitz

02/26/2014 01:35AM

ERROR: segmentation violation ---cosm...Started by:haha, 08/17/2014 09:24AM
I find a similar topic here
https://iraf.net/forum/viewtopic.php?showtopic=1465779
However my system is linux 64 bit.
After I download
ftp://iraf.noao.edu/iraf/v216/support/linux64/x_crutil.e
, put it in noao.bin.linux64 and make it
executable, the pr...

716

By: haha

08/17/2014 09:24AM

Please use DS9 version 7.5 with IRAFStarted by:joye, 07/03/2018 08:24PM
It has come to our attention there are a
number of issues with DS9 version 7.6
and IRAF. These issues have been
addressed and a new version of DS9 will
be available with the release of our
next beta version, 8.0b1.

We recommend the use version 7.5 av...

717

By: joye

07/03/2018 08:24PM

xgterm freeze after ubuntu upgradeStarted by:ircarrascal, 08/26/2014 08:48PM
This is actually a problem solved, but I
wanted to share in case someone needs
it.

Recently I upgraded to Ubuntu 14.04 and
installed IRAF v2.16.1. When using
xgterm, after 10-30 seconds the system
would freeze and I had no choice but to
reboot every ...

718

By: ircarrascal

08/26/2014 08:48PM

Pixel storage file is truncatedStarted by:Pamela, 07/10/2018 10:04PM
Hi,

While trying to do image reduction this
error stopped my mojo:

ERROR: Pixel storage file is truncated
(hatp27-026.fit)

I read similar questions from 2012 but
did not understand how they solved the
problem.

I am running iraf v.2.6.1 for l...

722

By: fitz

07/18/2018 07:12PM

input redirectionStarted by:marco.03, 07/09/2014 05:05PM
according to
[url]http://iraf.noao.edu/faq/FAQsec12.html[/url]
I should be able to run cl script from
any shell by doing:
[quote]% cl [code]
imstat dev$pix
logout
[/code]
using the [quote]cl -old

722

By: marco.03

07/09/2014 05:22PM

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...

732

By: fitz

05/11/2016 05:11PM

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...

738

By: fitz

09/16/2015 07:53PM

PSTSELECT picking stars that have val...Started by:debrunlm, 10/20/2014 09:01AM
Hello,

I am currently doing photometry on
single drizzled WFPC2 images of globular
clusters. The cosmic rays have been
flagged at 100000 and the datapars
datamax is set to avoid these high
values. Setting the datamax works to
avoid these high values ...

741

By: debrunlm

10/20/2014 09:01AM

what the key graph Started by:Johanna, 07/09/2014 08:29AM
Hi,

I want to make the absolute calibration
with IRAF. For this I use the photcal
task. I have already done the different
catalogues and I use fitparam in
interactive mode. But I want to fit the
Bouguer's line and I don't know which
parameters to cho...

744

By: tonisee

09/13/2014 03:23PM

IMEXAMINE using RAStarted by:ovince, 08/20/2018 09:15PM
Hi All,

I am trying to use IMEXAMINE in a script
like

[code]imexamine(FITSfl, frame=1,
imagecur="forImcomm",
logfile="res_imexam", keeplog="yes",
use_display="no")[/code]

where 'forImcomm' ia a file with stars
RA and DEC in degree as show b...

745

By: ovince

08/20/2018 09:15PM

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 host scripting fails with segmen...Started by:mcba, 09/17/2018 07:31AM
Hi guys,

I'm trying to use an IRAF command in a
bash script, so I am creating a file
like this:

#!/home/mcba/miniconda3/envs/iraf27/iraf/bin.linux/ecl.e
-f
task $hello=/home/mcba/iraf/hello.e
imhead g.fits
hello
logout

When I run this, the ...

754

By: mcba

09/17/2018 10:55PM

Problems with lists and "//" operatorStarted by:alba.aller, 05/08/2018 04:22PM
Hi!

I am trying to use the "//" (operator)
to prepend a new letter to an already
existing name but, for some reason, it
doesn't work for some time now. This is
what I am doing (with the error I get):

imred> imarith @all.list -
master_bias.fits b//...

754

By: alba.aller

05/09/2018 01:07PM

fields task keeps asking Started by:Gaba_p, 11/04/2016 09:35PM
I can't seem to be able to run the
'fields' task without it asking me to
input the 'Fields to extract'.

This happens even with mode='h'.

Example:

ecl> fields.mode='h'
ecl> fields.fields='1,2'
ecl> fields.lines='1'
ecl> fields.files='test.dat...

754

By: fitz

11/14/2016 05:20PM

SAOImageDS9 version 8.0rc2 is now ava...Started by:joye, 09/04/2018 08:23PM
SAOImageDS9 version 8.0rc2 is now
available for download. Please use this
version or version 7.5 with IRAF.

http://ds9.si.edu/site/Beta.html

761

By: joye

09/04/2018 08:23PM

ds9 and disappearing imagesStarted by:dah@lowell.edu, 06/27/2014 04:23PM
My student and I have been trying to
make color images with ds9, something I
have done successfully in the past. We
click on "new rgb" and load in the three
images one by one. But then when we go
back to look at the previous images we
loaded, one or mo...

785

By: fitz

06/28/2014 01:14PM

Stop querying for hidden and defined ...Started by:eggles, 07/31/2018 06:49PM
Hi,

I have a problem while running the task
'phot' where I am unable to run the task
without being queried/prompted for
parameters. My goal is to be able to
run this task (preferably through a
python script using Pyraf) as part of an
automated seque...

787

By: eggles

08/02/2018 08:16AM

Help with a simple zerocombine scriptStarted by:tasso1db, 07/22/2016 05:38PM
Hello,

I am trying to write a very simple
reduction pipeline for my schools
observatory. However I am getting the
following error: "Too many positional
arguments for 'zerocombine'" on line 12.
I'm slightly confused as to how I could
have too many ar...

788

By: fitz

07/22/2016 05:45PM

arc/standard star/object comsbination...Started by:haha, 07/10/2015 09:22AM
Hi all,
If there are two different exposures
along two different columns for one
object, one has to process them
independently, and at last combine the
two spectra to remove cosmic rays?

If arc lines are taken independently,
for example, He/Ne/Ar ar...

790

By: haha

07/10/2015 09:22AM

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

SAOImage DS9 7.4b7 is availableStarted by:joye, 09/23/2015 04:43PM
SAOImage DS9 7.4b7 is available at
http://ds9.si.edu/site/Beta.html.

This version contains a number of bug
fixes addressing issues with IRAF. In
particular, a problem with imexamine
introduced in earlier beta versions has
been corrected.

Regards
...

795

By: joye

09/23/2015 04:43PM

chpixtype questionStarted by:massimo55, 03/04/2015 05:52PM
Hello,
I have a problem converting pixel type
from “real” to “ushort”.
I am working on images that originally
were in MEF format, and that were
converted with WFIT command in single
images with pixel type “real”.
I would like to convert ...

796

By: massimo55

03/04/2015 05:52PM

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]
...

818

By: fitz

05/05/2016 10:21PM

imstack for different galaxiesStarted by:michgradstudent, 06/30/2016 04:30PM
I want to stack 50 different galaxies on
top of each other, each having different
central coordinates and in very
different parts of the sky.
I'm trying to calculate the cumulative
light from all of them, and stacking is
a nice way to do this.

Is th...

819

By: fitz

07/09/2016 03:36AM

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 ...

821

By: fitz

12/22/2015 03:10AM

Bus error when attempting to run Started by:leonard, 10/14/2013 07:11PM
Hello,

I have a Macbook Pro Retina 15" with
an Intel Core I7 ("Mid 2012"), 64-bit,
with IRAF v. 2.16 installed. When I
attempt to run the fitparams task (in
the noao.digiphot.photcal package) it
exits immediately with:

ERROR: bus error

From ...

825

By: leonard

10/14/2013 07:11PM

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...

826

By: fitz

09/29/2015 05:32PM

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

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