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Last Post

Dispersion axisStarted by:sapna, 01/31/2016 09:42AM
Can any one tell how to check whether
the dispersion axis is along line or
along column ?

1815

By: fitz

02/01/2016 05:31PM

dispaxis in apall taskStarted by:amalmirando, 02/26/2010 04:25AM
hi,
i'm using IRAF version V 2.14 and
currently going through exercises in
extracting spectrums.in the tutorial in
extracting spectrums, in apall task they
have mentioned about a dispaxis task.but
in the version i use,no such task
exist....since my data...

3124

By: fitz

02/26/2010 04:25AM

disconnected pixel and imh files...Started by:massey, 01/15/2007 03:42AM
Hi, Mike---

I really should remember how to cure
this, but I don't.

Here's the issue. I have a handful of
"legacy" .imh files sitting around which
expect to find their associated pixel
files on tofu!/data1/blah/blah. That
machine and disk no long...

3994

By: massey

01/15/2007 03:42AM

directory names with spacesStarted by:duvall, 10/18/2016 12:45PM
If I have a directory name with spaces,
I can't seem to cd to it:

(in a shell)
mkdir "test 2"
ls
test 2
cd "test 2"
(ok)

(in iraf)
dir
test 2
cd "test 2"
ERROR: Cannot change directory to 'test
2'
called as ...

This seems to happen on...

1036

By: fitz

10/18/2016 12:53PM

directory names with spacesStarted by:kkwitter, 12/11/2009 05:22PM
Hi,

We have a directory we want to get to
from within IRAF that has a space in its
name: "Macintosh HD" - which can't be
changed because of all the other things
that address it... anyway, we are
finding it impossible to cd into this
directory - we tri...

4363

By: sontag

12/11/2009 05:22PM

Difficulty with REFSPECStarted by:rohit, 07/11/2008 07:13PM
I am trying to work on REFSPEC. Using
epar I input the reference spectrum and
then run the task. It asks me for the
input image which I promptly give it. It
then gives me the following error:

Image header parameter not found: (jd)

First I thought th...

5692

By: valdes

07/11/2008 07:13PM

Difficulties with xc (while installin...Started by:Daniel Stern, 07/29/2007 09:18PM
I am having difficulties installing
ucsclris on my system, and the problem
seems to stem from xc crashing. I am
running redhat 9 and iraf 2.12.1. When
I try to mkpkg, I get the following
error (only the first lines shown):

cl> mkpkg -p ucsclris
ch...

6887

By: sastanford

07/29/2007 09:18PM

difficulties installing mscredStarted by:carvano, 07/25/2007 04:42PM
Hi.

I am trying to install mscred on a suse
10.2 machine, and since I couldn't find
suse binaries for this package I decided
to install from source. I followed the
instructions but eventually got:

________________________
x_mscexam.f:
sysruk:
x...

2631

By: fitz

07/25/2007 04:42PM

Development of VERY user-friendly tut...Started by:Guest, 02/22/2006 10:38PM
Sirs,
I'd like to obtain a copy of Mr. Lonc's
analysis software and documentation.
Would you please aprise me of how/where
to obtain this?

Thanks and best regards,
David Fields

David E. Fields, Ph.D.
NASA Solar System Ambassador
Tamke-Allan Obser...

5004

By: ygrange

02/22/2006 10:38PM

deredden V2.10.3 : weird behaviour at...Started by:hachi1, 01/12/2011 03:06PM
Dear all,

I programmed an own de-reddening routine
in FORTRAN (CCM extinction law - just as
in deredden) and compared the output in
the end (flat spectrum with flux=1.0,
deredden by E(B-V)=0.5 w/ R_V=3.1).

Plot:

http://www.mpa-garching.mpg.de/~shach...

2781

By: hachi1

01/12/2011 03:06PM

deleting part of an image?Started by:Arp, 02/28/2010 04:44PM
Hi!

Is there a task which lets me manipulate
parts of an image without trimming it?
for example, I want to to set all pixel
values in a the section 100:200,100:200
to 0.

I tried imcopy, but I think that only
allows me to copy a section.
thx.

3206

By: Arp

02/28/2010 04:44PM

delete key (Mac OSX 10.6.6)Started by:jchiar, 01/19/2011 10:31PM
Hello,

I'm having some trouble with the delete
key within xgterm. However, it is not
quite like the problems I read about in
previous posts in this forum: the
delete key works just fine within cl
until I try to delete/edit the inputs
within a specifi...

2077

By: fitz

01/19/2011 10:31PM

definition of ellipticityStarted by:cody, 02/26/2008 02:53AM
Hi-
I am measuring the ellipticity of some
stellar psfs (to see how elongated they
are), and I'm trying to see what iraf
task to use. I picked a star and did
imexam with cursor 'a' on it to get one
measurement. I also used fitpsf in
elgauss mode to get...

3440

By: fitz

02/26/2008 02:53AM

Defining a foreign task in the pkgnam...Started by:EdAnderson, 07/25/2006 09:08PM
Mike (or anyone),

I'm have a standalone fortran program
that is part of a local external
package.

Previously, I would define the task in
my loginuser.cl file as:

task $taskname =
$/path-to-executable/executable-name

Inside the packagename.cl ...

4248

By: EdAnderson

07/25/2006 09:08PM

Debian IRAF on Ubuntu does not see ex...Started by:msz1959, 09/01/2021 07:57AM
I have NOAO/IRAF Debian
2.16.1+2018.11.01-3 installed on a
Ubuntu 20.04 machine, using metapackage
astro-iraf which also installs several
external packages (fitsutil, msdred,
rvsao, sptable,wcstools). For an unknown
reason, IRAF does dot detect those pa...

1760

By: fitz

09/02/2021 04:46PM

Debian distribution questionStarted by:Guest, 04/23/2007 09:59PM
Hi.

I have installed a version of linux
named Ubuntu (Debian) and I am wondering
which of the files are need for this
particular distribution. I have worked
with fedora and everything works well,
but right now I am lost with the files
needed to install...

3578

By: rubab

04/23/2007 09:59PM

dealing with spaces (" ") i...Started by:AndrewS, 06/15/2011 03:49PM
I have a set of .fit files with a space
(" ") instead of a hyphen ("-") or
underscore ("_") separting the
components, eg:

first second1.fit
first second2.fit
first second3.fit
etc.

I want to rename them with a connecting
character (such as hyphen), eg...

1754

By: fitz

06/15/2011 03:49PM

dealing with non-standard FITS files.Started by:rowe, 12/19/2007 12:13AM
I have some CCD images that IRAF simply
skips when trying to read. They all
have this line at the top of the header:

SIMPLE = F / FITS
Standard

From reading around the F seems to
indicate that the file has some
non-standard format...

3184

By: fitz

12/19/2007 12:13AM

Dealing with nebulosityStarted by:gbr, 02/13/2007 07:49AM
Hi,

I'm an undergraduate student I'd like
some help with PSF in special
backgrounds.

I'm having problems with photometry in
RY tau.It has some nebulosity, which is
not symmetrical.The filters are
UBVRI.All things here are from V filter.

[img:a12489b...

3690

By: gbr

02/13/2007 07:49AM

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 = ...

890

By: fitz

10/27/2014 03:34PM

data type changes and fits header def...Started by:rclark, 11/26/2008 07:21PM
An image file is being created with the
statement:

op = immap (Memc[outname], NEW_COPY, ip)

so existing header information will be
copied, as only a small number of
keywords are to be changed. However
among the changes is the data type of
image array....

2040

By: fitz

11/26/2008 07:21PM

data type changes and fits header def...Started by:rclark, 11/26/2008 07:12PM
The calculations in some code need to
have some fairly widespread changes
in data type-- specifically eliminating
the explicit use of the complex
data type, and real needs to be replaced
with double.

So starting at the beginning...

In SPP code a line ...

1685

By: fitz

11/26/2008 07:12PM

Data ReductionStarted by:Guest, 05/22/2006 09:05PM
I'm about to start reducing my data. Do
I need to make a copy of the files first
before I do anything to them or is step
one simply to combine and subtract the
bias frames??

Thanks!

3756

By: fitz

05/22/2006 09:05PM

DAOPHOT: substar fails if photometry ...Started by:hansmor, 05/06/2010 04:24PM
Hi,

I have a script that uses substar. It
sometimes happens, that the photometry
file and the rejection file are
identical. If I run substar in these
cases, the resulting fits file is
currupted (parts of the images are
missing).

I am not sure if that ...

1438

By: hansmor

05/06/2010 04:24PM

daophot/phot output formatStarted by:ping, 05/05/2006 11:04PM
Dear IRAF,

The task "PHOT" has output format %-6d
for ID. That means it can only process
maximum of 999999 stars. (5 years ago
it was %-5d, so it could only do 99999
starts). Now I have Mosaic image with 3
million stars. How do I change the
output...

5972

By: ping

05/05/2006 11:04PM

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...

1745

By: fitz

02/13/2015 05:17PM

daophot substar does not react to wcs...Started by:hansmor, 04/13/2010 08:50PM
Hi,

I have a problem with the substar task
in the daophot package
To me, this looks like a bug.

[code:1:45222c8c91]
daophot> substar
image.fits[4] image.fits4.nst.3
'' image.fits4.psf.1.fits default
SUBTRACTING - Star: 66 X = 574.54
...

1507

By: hansmor

04/13/2010 08:50PM

DAOPHOT Question, PSF TaskStarted by:dustdevil, 12/01/2008 05:36AM
Hello all!
I'm currently using the DAOPHOT package
in IRAF and am working with a pretty
crowded field here and so I reduced the
PSFRAD from the default value of 11 to
5. (the FWHM is about 2 pixels). When
I ran the PSF task, though, the output
psfima...

1841

By: valdes

12/01/2008 05:36AM

Daophot PSF: star is outside the imageStarted by:hbarker, 10/20/2017 02:29PM
I'm trying to build a psf for an image,
and successfully run daofind, daophot
and pstselect. I have >1000 detected
stars in my field, and told pstselect to
choose 100, which it does fine. Hoever,
when I try to run psf, I get an error
for each star "Star...

1088

By: fitz

11/02/2017 12:53AM

daophot psf does not react to colon c...Started by:hansmor, 04/13/2010 09:54PM
Hi,

I try to find a PSF for my crowded field
photometry with the daophot psf task.
My first results look really bad, so I
want to change the parameters, e.g. try
different functions.

I thought I could try a function, change
it with a colon command and...

1808

By: fitz

04/13/2010 09:54PM

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