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Last Post

syntax error in header value extractionStarted by:acard, 12/16/2010 12:26PM
Hi guys,
I'm working on a simple programme that
makes some counts on header parameters.
The idea is to put as input the name of
the keyword, and then to use its value
to create a new keyword. However I can't
figure out how to combine the name of
the ke...

1753

By: fitz

12/16/2010 12:26PM

IRAF documentationStarted by:Jason Quinn, 11/30/2010 08:10PM
Do the latex sources (and needed
figures) for the important IRAF manuals
still exist in a way that can re-produce
the user's guides? In particular, I am
referring to the beginner docs like "A
User's Guide to Reducing Slit Spectra
with IRAF", "A User's G...

1279

By: fitz

11/30/2010 08:10PM

If a task is a script or executable?Started by:AndrewS, 11/28/2010 04:44PM
Can anyone tell me what is the easiest
way to find out if a task is a script
file or an executable program? ie. is it
possible to bring up a list of all tasks
that are script files?

I understand "help <taskname>
option=source" will bring up the s...

1137

By: fitz

11/28/2010 04:44PM

imal2 does not workStarted by:elenamanjavacas, 11/07/2010 10:20PM
Hi everyone,

I have recently started to use IRAF, and
I have found two problems (right now):

The first one is that I need to use
"tep.cl" so I tipe: cl <
/home/user/iraf/clscripts/tep.cl. It
works but there is an error: "Unable to
open parameter fi...

1875

By: fitz

11/07/2010 10:20PM

mkiraf without entering terminal typeStarted by:epud, 11/02/2010 06:11PM
Hi.

I am making a csh install script where I
issue the command:

mkiraf

I would however prefer it if it just
picked xgterm instead of prompting the
user to type it in. Is there a way I can
call mkiraf so that no user input is
required?

Thanks,

Paul

1372

By: fitz

11/02/2010 06:11PM

array and CL problemStarted by:rjvo, 10/28/2010 12:57PM
I start IRAF in xgterm
window:[code:1:df90896515]
ecl
[/code:1:df90896515]
now[code:1:df90896515]
=x
[/code:1:df90896515]
I put 2 [Enter]
now:[code:1:df90896515]
=x[1]
2
[/code:1:df90896515]
now:[code:1:df90896515]
lpar cl
[/code:1:df90896515]
a...

1371

By: fitz

10/28/2010 12:57PM

Plot fittingStarted by:Sparkles, 10/06/2010 09:07PM
Hey guys me again,

I'm using slpot and fitting a function
using the t button and then n, I.e:

[b:630c329231] t Fit a function to
the spectrum using the ICFIT mode.
Typically
iterative rejection is used to
exclude spectra lines from t...

1429

By: fitz

10/06/2010 09:07PM

SPLOT windowStarted by:rohit, 10/04/2010 03:57PM
My SPLOT seems to have a mind of its
own. When I use the splot command to
plot a spectra, I get this small range,
like, 12 Angstroms. It is as if I am
zooming onto a small section of the
spectra. How do I change my view?

Below is the lpar of SPLOT.

...

1983

By: rohit

10/04/2010 03:57PM

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

64bit clStarted by:duvall, 07/07/2010 08:48PM
I'm just getting started with the new
version 2.15Alpha. I wanted to do
something that was a 64-bit thing, so I
said to the cl:

x=1.e10
i=x
print (i)
with the result:
-2147483648

I guess I was thinking that integers in
the cl would be 64bit. Am I wr...

1536

By: fitz

07/07/2010 08:48PM

Question on subtracting background in...Started by:mdivell, 07/05/2010 06:44PM
Hi all,

I'm working on a photometry project
where there was no detection in our
science frames. Obviously I'm limited to
calculating an upper limit.

I have measured the flux from a standard
star in ADU, used the known flux value
to calculate a conver...

1417

By: mdivell

07/05/2010 06:44PM

Imalign does not align my images corr...Started by:Johan, 07/05/2010 02:12PM
Hello
I am using imalign to align images that
I want to use for stacking. When I run
imalign I get shifting results very
close to my estimation values in my
shifts-file. It seems that the output
files get trimmed and not shifted.
The FWHM of an average ...

1836

By: fitz

07/05/2010 02:12PM

memory corruption in xyxymatchStarted by:, 07/05/2010 08:03AM
A colleague has stumbled upon a bug in
xyxymatch. When nrefstars==3, nrmaxtri
(which is used in computing the
allocation size for reftri) ends up
being equal to 1. Later, rg_tvote()
(called via rg_match()) assigns values
to reftri(2,RG_MATCH) and reftri...

1244

By: fitz

07/05/2010 08:03AM

fitcoordsStarted by:donzelli, 06/28/2010 03:40PM
Hi,
I have a problem using fitcoords and I
can't find the reason.
After doing reidentify, I observe on
the (x,y) plot given by fitcoords that y
coordinates have nothing to do with the
real position of the identified lines.
For instance, for column x=5...

1319

By: donzelli

06/28/2010 03:40PM

Unable to open Parameter FilesStarted by:BuffCyclist, 05/24/2010 03:26PM
Hey everyone,

I finally decided that I wanted to setup
iraf on my home desktop. I'm running
Ubuntu 10.04 and have iraf installed,
however when I go to do a simple
command, I get the following error:
[quote:4507d674be]
cl> imstat MASTER_FINAL_IMAGE.f...

3260

By: fitz

05/24/2010 03:26PM

write permissionsStarted by:Guest, 04/29/2010 07:21PM
Hi, I'm trying to pipe iraf output
into files but get "cannot write to"
errors;
e.g.,

ecl> imhead *.fits l- > list
ERROR: cannot open `list' for writing

Is there some flag I need to set in
login.cl? Or??

Thanks,
=======================...

1359

By: fitz

04/29/2010 07:21PM

X11IRAF not installing xgterm correctlyStarted by:kandrey89, 04/20/2010 12:43AM
Hello,
I have encountered a problem where
xgterm does not appear to be
working correctly on my machine. I will
attempt to describe my
installation procedure along with some
hardware specs and output.

Machine is an Intel QuadCore, running a
64-bit archi...

3449

By: fitz

04/20/2010 12:43AM

splot Gunn-Stryker spectraStarted by:stoughto, 05/06/2010 01:45PM
I downloaded gunn stryker spectra from
ftp://ftp.stsci.edu/cdbs/grid/gunnstryker/

Is there a way to splot these? I get
this error when I try:

onedspec> splot
/home/stoughto/das/gunnstryker/gs_1.fits
ERROR: MWCS: dimension mismatch
(mw_open)

and ...

1577

By: fitz

05/06/2010 01:45PM

Problem combining mosaic images in V2...Started by:djbard, 04/28/2010 07:02PM
Hello,
I'm trying to combine several mosaiced
darks where one of the segments [8] is
broken and therefore filled with
zero-valued pixels. When I try to
combine them using darkcombine in mscred
using iraf V2.14.1 I get errors:

mscred> darkc @dark.l...

1831

By: djbard

04/28/2010 07:02PM

convolving spectraStarted by:rohit, 04/27/2010 10:58PM
Can spectra of a non-rotator be
broadened in IRAF for a specific
velocity? Basically I am calculating
rotational velocities for the stars
using the technique as stated in
Bailer-Jones et al. 2004, A&A, 419,
703. I would like to know if IRAF can do
...

1371

By: fitz

04/27/2010 10:58PM

Timing analysis softwareStarted by:FSBoyden, 04/22/2010 01:19PM
Hello.

Been a while since I posted. Research!

I need to do some timing analysis on
photometry (using IRAF) results
(light-curves). The recommended software
is XRONOS, but the input files needs to
be specific FITS format data files.

Q! Is it possible,...

1280

By: fitz

04/22/2010 01:19PM

Fitting a profile...Started by:amalmirando, 04/18/2010 11:38AM
Hi,

I'm currently working on extracting the
spectral broadening due to doppler
effect and pressure broadening which can
be modelled by gaussian and lorentzian
profiles.

Is it possible to seperate the two
effects in an absorption line?

The biggest iss...

1290

By: fitz

04/18/2010 11:38AM

Display Problem on new IRAF installStarted by:joshw, 04/15/2010 02:53AM
Hi,

I'm having an odd problem with the
display function after installing IRAF
(via SciSoft) on a new computer (running
Mac OS X 10.6). IRAF seems to run okay,
but when I display an image, I get a
blank square and the pixel coordinate
readout gives [b:...

1516

By: joshw

04/15/2010 02:53AM

Gain and Readout NoiseStarted by:hawcheng, 04/14/2010 01:32PM
I have been using imcombine in order to
average frames while rejecting cosmic
rays. The frames are of different
exposure times, so I have had to scale
them by mode in order to be able to
sensibly average them.

My question is this : now I want to do
pho...

2196

By: valdes

04/14/2010 01:32PM

non-stellar photometryStarted by:spacermase, 04/13/2010 04:01PM
Hello all,

So, I'm working on trying to get
photometric measurements of Saturn's
moons during opposition. I've just now
finished reducing the images, and can
actually proceed to doing the data
analysis. I now have a few questions.

1. What's better ...

1391

By: valdes

04/13/2010 04:01PM

x_onedspec.e memory corrupted error i...Started by:aburgasser, 04/06/2010 11:46AM
Hey everyone,

I'm running IRAF on Mac OS 10.6.3 using
xterm -> xgterm.

While running the "identify" task in
NOAO->twod->apextract i'm getting
the following fatal error:

PANIC in
`/iraf/iraf/noao/bin.macintel/x_onedspec.e':
Memory has been co...

1494

By: fitz

04/06/2010 11:46AM

graphics terminal for mac os xStarted by:Guest, 03/22/2010 06:49PM
I just installed IRAF on my IMac (OS
10.5.8). Everything seems to work fine
except for graphics tasks. For
example, when I try to "display", I get
the error message "Cannot open device
(node!imtool,,512,512).

I have tried terminal types xterm,
gte...

2532

By: thatsaskguy

03/22/2010 06:49PM

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...

4842

By: fitz

03/18/2010 09:08PM

Byte-swapped tableStarted by:Guest, 03/05/2010 04:13AM
Hi,
I’m revisiting some older data
(circa 2006; see attachment) and when I
try to TPRINT the tables, I get the
following message:

Warning: Table
`n473Ha' does not exist or cannot be
opened.

When I recreate the table ...

1662

By: fitz

03/05/2010 04:13AM

bug in blkrep?Started by:Arp, 03/04/2010 10:20AM
Hi!

Is there a bug in blkrep?

Because, I have a fits file with the
dimension 512x1, its one line.
If I want to enlarge it to 512x512 I
would use blkrep and use 512 for
dimension 2. but this simply does
nothing... the resulting image has the
same dimen...

1260

By: fitz

03/04/2010 10:20AM

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