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Last Post

Extract magnitudes from spectraStarted by:bai, 12/03/2014 09:11AM
Hi,

Is there any procedure of IRAF to
extract magnitudes from spectra?

Thanks

Yu

2084

By: fitz

12/03/2014 04:42PM

segmentation violationStarted by:giannicatanzaro, 11/21/2014 05:29PM
Hi

I installed the new 2.16.1 on my
openSUSE 12.1 laptop and I got some
problems:

if I use "imdelete" or "ccdproc" I got
the errors "segmentation violation", and
of course I did not
have this problem with the 2.15 on the
same computer

any help...

1160

By: fitz

11/25/2014 07:25AM

Problems with qphotStarted by:Giorgio, 10/29/2014 06:39PM
When I run qphot, I get this warning:
"Graphics overlay not available for
display device".

What does it mean?

Thanks
Giorgio

1132

By: fitz

10/29/2014 06:42PM

data typesStarted by:CosmicLettuce, 10/27/2014 12:49PM
I have a FITS file with the following
header segment:

% less section.fits
SIMPLE = T / file
does conform to FITS standard

BITPIX = 16 / Number
of bits per data pixel

NAXIS = ...

882

By: fitz

10/27/2014 03:34PM

stdimage in ds9Started by:grijs, 08/13/2014 09:25AM
Hi, I'm helping a student to set up Iraf
to display HST images
properly -- she's been struggling to run
some commands (which worked
fine on my own computer), so we found
out that while the images are
1600x1600 pixels, the default ds9
display setting ...

3170

By: fitz

08/13/2014 04:25PM

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

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...

783

By: fitz

06/28/2014 01:14PM

how to indroduce int variable defined...Started by:prajwel, 04/12/2014 08:10AM
[b]I'm having a hard time introducing an
integer which I have defined in script
to a simple "sed" command :? :(

I have declared variable in script like
this

[code]int F=0
[/code]
Now I put this in a while loop and get a
particular value assigne...

1594

By: fitz

04/12/2014 04:02PM

segmentaton violation with 2-meter KP...Started by:daniela, 03/31/2014 07:23AM
Hello,
I am at the dome of the KPNO 2-m
telescope and have downloaded on my
laptop a bunch of images just obtained
with the
CCD camera (STA3) .
To much of my surprise, I can't read
these images in IRAF. No matter what
package I use, I get: `ERROR: ...

1081

By: fitz

03/31/2014 02:43PM

Save ellipse overlays to a fileStarted by:vsravani, 03/19/2014 09:00PM
Hi,

Can somebody suggest me how to save the
output of isoimap or isoexam using a
script?
Essentially, I wish to save an image
with the ellipse isophotes and bad
pixel mask overlayed. Because I am
doing it for 100 galaxies, I wish to
write a script...

1168

By: fitz

03/20/2014 12:48AM

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

buying a mac laptopStarted by:duvall, 02/20/2014 08:58PM
I'm thinking of buying a mac laptop that
I would use to run iraf. Are there
minimum memory requirements to run iraf?
What works comfortably? Macbook Air or
Pro?
Thanks.
Tom

895

By: fitz

02/20/2014 09:04PM

problem with photometry of crowded fi...Started by:Johanna, 02/14/2014 08:36AM
Hi!

I am a Phd student at Montpellier in
France and I work on a globular cluster
NGC 4833. I want to get magnitudes of
stars which composed this globular
cluster. For that I use the protocol for
crowded field which I found in the
"Reference Guide to ...

1571

By: fitz

02/18/2014 06:00AM

IRAF not retrieving image coordinates...Started by:gasdiaf, 02/13/2014 02:39AM
When trying to use interactive tasks
such as imexam or psfmeasure with ds9,
no coordinates appear to be transferred
to IRAF. When using imexam I get the
flashing cursor when mousing over ds9,
as I would expect, but when I type 'r'
or 'a' or any other ke...

1613

By: fitz

02/13/2014 05:38AM

quick IRAF question regarding UNIX co...Started by:dadykhoff, 02/12/2014 02:31PM
Hi,

I am trying to run the following
command:

[code]imhead @infileJ_M74 long+ | grep
TELRA | awk -F\' '{print $2}'[/code]

The first pipe works fine and outputs
this:

[code]TELRA = '01:37:31.06' /
TELRA = '01:37:31.04' /
T...

1978

By: fitz

02/12/2014 04:23PM

display and ds9 pixel positions do no...Started by:vsravani, 01/25/2014 11:13AM
Hi,

I have a 4150x4150 pixel image. The
position of the pixels in ds9 is
different from that of iraf when I use
the display task. I have tried with
imt4096 and imt8192, and it looks like
iraf is scaling my 4150 image to fit
into the iraf image size...

1507

By: vsravani

01/25/2014 12:25PM

Host Script Help & QuestionStarted by:accrama, 01/22/2014 03:48PM
Hi everyone. I would really appreciate
your help.
I am doing a very simple host script to
run QPHOT.
I am having trouble loading packages.
(Running IRAF V 2.15.1a in MAVERICKS
10.9.1 in MacBook Pro)

The script asks for all the packages
needed for ...

1044

By: fitz

01/22/2014 05:39PM

imexam_Warning: Pixels out of boundStarted by:amit.durg, 01/08/2014 07:01PM
While doing imexam in SDSS DR9
photometric images of any galaxy, I am
getting following message in xgterm
terminal:

"Warning: Pixels out of bound"

Could anyone please tell me why this
message comes and how It can be solved?

Regards,
Amit

3887

By: fitz

01/16/2014 09:12PM

command-line synatx issue with heditStarted by:bgandersson, 12/12/2013 12:04AM
Hi,

I'm trying to do the comparison spectrum
assignments for a bunch of observations
and, if I do it through the parameter
editor (i.e. $epar hedit - etc.) or if I
do
$hedit object_file.fits REFSPEC1 add+
ver- show+
then it works fine (in the la...

1261

By: fitz

12/12/2013 04:11PM

Errors in 2.16.1?Started by:jeanm12, 11/21/2013 11:24PM
Hello,

To start with, my computer is a 64-bit
machine running CentOS 6. I have been
doing some echelle data reduction and
ran across a few things that might be
bugs or errors.

Running IRAF 2.16 with IRAFARCH=linux:
- I found that ecreidentify did...

997

By: fitz

11/22/2013 02:13AM

Opening ImagesStarted by:scblankenship, 11/11/2013 01:08PM
Im very new to iraf and I am currently
using iraf11. Im currently not able to
look at the images i have saved would i
be possibly missing something making it
not possible to open the images with
mplot or could i even be using the wrong
command.

676

By: fitz

11/11/2013 05:04PM

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

IRAF and SAMPStarted by:rjvo, 08/22/2013 07:37AM
When I make "callAndWait" to IRAF via a
SAMP Hub, I get immediate return to a
Client while IRAF still waits doing for
example: "scan x" or "implot dev$pix".
Is there any method to send the "c"
results of "implot dev$pix" to a SAMP
Client?

1516

By: fitz

08/22/2013 07:37AM

mkobjects : ERROR: No write permissio...Started by:ste_atreb, 07/03/2013 10:50AM
Hi all,

I have been working a bit with ARTDATA
and MKOBJECTS and I encountered some
issue while running it.

Basically, when using MKOBJ to add some
artificial sources on my science maps, I
got the error message

"ERROR: No write permission on file (...

4379

By: fitz

07/03/2013 10:50AM

light curve generationStarted by:fks, 06/28/2013 09:40AM
Hi
Can you please tell me what task can i
use for light curve generation from flat
fielded fits files? Earlier i used
Vaphot. Is there any task similar to
vaphot?

1245

By: fitz

06/28/2013 09:40AM

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

how to compile .x filesStarted by:galtavi, 02/20/2013 02:49PM
Dear IRAF users, I would like to modify
the telluric task source (t_tweak.x) to
get in output the rms (so far it is
printed on the graphical window only). I
think it's enough to modify the lines
call printf (" Tweak: shift
= %.2f, scale ...

2920

By: fitz

02/20/2013 02:49PM

imcombine and pixel masksStarted by:Paul Kerry, 12/04/2012 04:39PM
Hi

Our of our users has asked me to report
this problem...
--
I'm attempting to median stack HAWK-I
images in MEF files. I'm using imcombine
and have pixel masks which I wish to use
during the stacking.

A master pixel mask has been produced
using op...

2633

By: Paul Kerry

12/04/2012 04:39PM

IRAF YouTube VideosStarted by:fitz, 12/02/2012 06:05PM
Vital Fernandez (lativmail@gmail.com)
has put together (and plans more) some
useful instructional videos for
installing and using IRAF and has
created a YouTube channel for these at:

[url]http://www.youtube.com/playlist?list=PLza8S46F-17XLmPkVpQLJb5C3q...

2192

By: fitz

12/02/2012 06:05PM

long file list crashes tasksStarted by:rgreimel, 11/25/2012 03:10PM
Hi,

trying to use a large number of images
with a task leads to problems in IRAF
2.16. For example:

ccdred> ccdproc @center.in flat=Flat*
zero=../Calibration/Zero_center darkcor-
*** glibc detected ***
/iraf/iraf/noao/bin.linux64/x_ccdred.e:
malloc...

2334

By: fitz

11/25/2012 03:10PM

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