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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

Extremely large pixel valuesStarted by:fergusjm, 07/09/2015 03:46PM
Hello, I'm having a problem after
dividing my trimmed frames by the
response to the combined flat field.

# IMAGE NPIX
MEAN STDDEV MIN MAX
trim_26_1354 1890304
848.7 1204. -2591. 498...

1094

By: fitz

07/09/2015 06:15PM

ds9 issue (saving image with coordina...Started by:TheWonderer1, 07/06/2015 07:11PM
Hi there,

I am not using this for any true kind
of publication but more so we can
reference material. However, it is very
important that I have a coordinate
system where I can plot the WCS.
Whenever I try to save as a PNG or JPEG
it does not functio...

1323

By: TheWonderer1

07/06/2015 07:11PM

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

segmentation violationStarted by:wuxiaohan, 06/29/2015 11:54AM
I was doing photometry for a star
cluster, with ds9 opened. When I ran
daofind, the file image.coo.* appeared
in the process but vanished when it
ended, while den*.fits remained. And I
got this "segmentation violation". I
didn't find out what the proble...

2330

By: wuxiaohan

07/03/2015 07:23AM

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:
...

939

By: fitz

06/30/2015 05:47PM

EUV Package - detpos not finding dete...Started by:DamianJC, 06/23/2015 10:19AM
Hi All,

This may be obscure and outdated, but
I am trying to make some EUVE light
curves with the
EUV package (v 1.9 from 2/1/00 on a mac
with IRAF 2.16) and one of the
functions, detpos (detector position)
is not finding the reference data,
eve...

925

By: DamianJC

06/26/2015 06:43AM

Cursor file problemStarted by:Sidh, 06/15/2015 08:47PM
Hi everyone,

I am a new IRAF user, and I have some
problem with the splot command.

I try to use it to save some
informations in a .log file but there is
no .log file registered at the end of
the operation.
Here is the line I use ;
[code]splot(nb...

1476

By: Sidh

06/19/2015 07:16PM

Conversion of fits to txtStarted by:shruthi, 06/19/2015 06:18AM
Hello everyone,

I am having trouble converting my
spectra which is in fits to txt file.
I used wspectext but what I want is
instead of wavelength, I want velocity.

So description of what I am doing:
1. splot the spectra.fits
2. used keystroke v ...

3585

By: shruthi

06/19/2015 07:01AM

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
...

3447

By: fitz

06/16/2015 05:05PM

FEROS DRSStarted by:giannicatanzaro, 04/09/2015 08:02AM
hello guys

I downloaded a FEROS tarball with data
like those ones:

r.FEROS.2006-06-20T04:16:45.241.1051.fits
r.FEROS.2006-06-20T04:16:45.241.1052.fits
r.FEROS.2006-06-20T04:16:45.241.1061.fits
r.FEROS.2006-06-20T04:16:45.241.1062.fits
r.FEROS....

1106

By: gmaravel

06/16/2015 04:19PM

IRAF Development Roadmap UpdateStarted by:Jason Quinn, 06/08/2015 10:20PM
The original IRAF Development Roadmap
was posted back on September 30, 2013.
It's now mid-2015 and approaching the
2016 change of development priority. Is
it possible to get an update on the
roadmap? For instance, which features
were chosen for develope...

1045

By: fitz

06/10/2015 05:20PM

Imarith error - is not an image or nu...Started by:fergusjm, 06/09/2015 02:56PM
Hello, while trying to flatten my data I
keep running into a problem.
The command I'm running is as follows:

imarith trim_18 / flat_hk_mar28_2015
trim_data_flat_18

However I keep receiving an error:

trim_18 is not an image or a number, I
kno...

3919

By: fitz

06/09/2015 06:34PM

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

747

By: fitz

06/03/2015 04:26PM

ds9 locationsStarted by:duvall, 05/21/2015 05:36AM
In my old setup at Stanford (linux iraf;
version 6 ds9), I could get nice
positions within an image by loading the
image into ds9 using the display task
(say after setting stdimage=imt800) and
putting the cursor onto a location and
reading off the posit...

1158

By: duvall

05/27/2015 06:08AM

how to konw which stars have saturate...Started by:Matrix, 05/13/2015 09:28AM
Like the topic, when I want to know some
stars whether they have saturated the
CCD, what can I do?

1086

By: Matrix

05/23/2015 10:52AM

How to create a accurate WCS with som...Started by:Matrix, 05/12/2015 03:18AM
Hello, everyone! Today I encounter a
second question: I found the WCS and
RA/DEC did not have a right
correspondence in my fits file. And this
cause a problem: when I want to know the
target star, I move the mouse to the
accurate RA/DEC (from the header...

1099

By: Matrix

05/13/2015 08:43AM

How to make two fits file aligned?Started by:Matrix, 04/29/2015 02:22PM
I want to get two images aligned first,
and then I will merge them, but now I
encounter a question: I don't know
whether they are aligned or not? In
another word, do we have any other
methods to do this work? Thank you for
your reply.

2806

By: Matrix

05/12/2015 02:49AM

ctio.bitstat does not seem to work in...Started by:johnf5007, 04/22/2015 08:43PM
Hello IRAF gods,

The very old (but handy) bitstat command
seems to not be installed properly on my
IRAF installation, though other tasks in
the ctio package do work:

ecl> ctio
apropos compression.
fft1d gki2cad imso...

1245

By: johnf5007

04/23/2015 02:39PM

IRAF and OSX YosemiteStarted by:fitz, 10/20/2014 10:00PM

In preliminary tests of the new OSX
Yosemite (10.10) release there don't
appear to be any issues in IRAF v2.16,
either runtime or when compiling local
package/tasks.

The only issue has to do with use of
XGterm/XImtool, and perhaps other X11
applica...

14203

By: fitz

04/17/2015 11:26PM

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...

14575

By: fitz

03/26/2015 07:24PM

nonrepeatible crashesStarted by:duvall, 02/11/2015 12:01PM
We have multiple CPUs using one file
system and I have the personally
installed iraf that is used
by more than one CPU. It's linux and
iraf 2.16.1, which I installed in Sept.
2014. I have a problem in which I get
'segmentation violations' from (I'm p...

1649

By: duvall

03/16/2015 12:14PM

Multiple IRAF/DS9 users on single mac...Started by:npaust, 03/06/2015 02:07AM
I have my students learning IRAF to do
some little projects and I'm running
into an odd problem. They're all SSHing
into a single workstation (with
individual accounts) and then displaying
the xgterm/ds9/etc windows on their own
Mac laptops. To get ds...

1233

By: npaust

03/06/2015 01:22PM

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

ERROR: No write permission on file (S...Started by:kneugent, 02/27/2015 07:17PM
I've been getting the following error
message when reducing SOAR data with
imextensions
> imextensions *.fits
ERROR: No write permission on file
(String_File)

Here are the following things I've tried
/ determined:
- I also experienced the error wh...

2408

By: kneugent

02/27/2015 07:37PM

Questions about cosmic ray rejection ...Started by:andrej, 02/17/2015 02:07PM
Greetings.
I have a stack of five images (each
being a two-minute exposure), and I am
trying to remove cosmic rays from the
images.

Since I have a stack of five images, I
tried using imcombine with
combine=median, but it still left a
faint shadow of...

3449

By: fitz

02/27/2015 06:36PM

daophot.phot hangingStarted by:jmccormac001, 02/06/2015 09:06AM
Hi,
I've noticed recently that daophot.phot
is hanging when I try to run aperture
photometry on an image I've previously
ran photometry on.

I've recently added the following
keywords to the image headers, which my
reduction scripts populate to keep...

1734

By: fitz

02/13/2015 05:17PM

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

'samp.client.receiveNotification' on ...Started by:rjvo, 02/03/2015 03:09PM
When I turn on the "samp trace" I get
(only for 64-iraf version) an error:

...
XML-RPC RESPONSE:

[code]

No such method
'samp.client.receiveNotification'

1416

By: rjvo

02/10/2015 10:36AM

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 ...

2887

By: fitz

02/06/2015 09:53PM

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