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IRAF TNX and ZPX WCS: Used in NOAO Mo...Started by:valdes, 06/10/2010 12:18AM
IRAF provides two world coordinate
systems (WCS) which include arbitrary
polynomial distortions. These are not
FITS standard, particular as they
predate the most recent FITS standards
and the current standards do not provide
such general distortion met...

1538

By: valdes

06/10/2010 12:18AM

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 ...

1435

By: hansmor

05/06/2010 04:24PM

Copying WCS Distortions to a new ImageStarted by:joshw, 04/23/2010 09:52PM
Hi,

I'm trying to set up a process by which
I can add accurate WCS to images in an
automated way. The images have little
or no WCS info embedded in the header to
begin with and my first step is to solve
using the Astrometry.net software. This
inserts...

1928

By: joshw

04/23/2010 09:52PM

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
...

1503

By: hansmor

04/13/2010 08:50PM

support requestStarted by:massimo55, 04/04/2010 06:53PM
Dear Sir,

I have some images in MEF fits format
(old JKT telescope images)
that I transformed in individual fit
images by wfits command.

After flat field calibrations the pixels
value range are from
positive to negative (the pixels are
�...

1253

By: massimo55

04/04/2010 06:53PM

improving the calibration accruacy....Started by:amalmirando, 03/09/2010 07:16AM
What methods can be used to increase the
accuracy of the calibrated spectrum?

1236

By: amalmirando

03/09/2010 07:16AM

IRAF help documentation for spectrosc...Started by:Guest, 01/25/2010 05:08PM
Hi sir

I sent you an email about a software
that installs IRAF and cygwin for
windows automatically and you have
posted it here in your forums:
https://iraf.net/phpBB2/viewtopic.php?p=1463409

I join a link for the documentations
made that could help ...

1337

By: Guest

01/25/2010 05:08PM

IRAF HelpStarted by:valdes, 01/13/2010 11:47PM
[b:c7440c41be]From: [/b:c7440c41be]"safi
khalid" <astro20024@lycos.com
([email]astro20024@lycos.com[/email])>
[b:c7440c41be]Date:
[/b:c7440c41be]December 19, 2009
11:14:42 PM MST
[b:c7440c41be]To:
[/b:c7440c41be]<valdes@noao.edu
([email]valdes@...

2041

By: valdes

01/13/2010 11:47PM

Fwd: Multi slit dataStarted by:valdes, 01/13/2010 11:28PM
[b:6f62212893]From: [/b:6f62212893]Ana
Maria Teodorescu <teoana@gmail.com
([email]teoana@gmail.com[/email])>
[b:6f62212893]Date:
[/b:6f62212893]January 11, 2010 1:13:24
PM MST
[b:6f62212893]To:
[/b:6f62212893]fvaldes@noao.edu
([email]fvaldes@noao....

1349

By: valdes

01/13/2010 11:28PM

fitsutilStarted by:Guest, 01/11/2010 07:55PM
Hi,

I'm having trouble installing the
fitsutil package and compiling the
executables. My system is macintel.

Being logged on as an IRAF user, I put
the fitsutil source in
/iraf/iraf/extern/fitsutil and also
editted the extern.pkg file
but the foll...

1164

By: Guest

01/11/2010 07:55PM

iraf in cygwin problemStarted by:Guest, 12/27/2009 09:02PM
Hello
I installed iraf in cygwin and it
worked, but for some unknown reason,
now it do not work, try reinstalling did
not work. He tells me the
following error:

$ cl
**:
^
ERROR: syntax error
called as: `cl`
called as: `cl`
Error while r...

1149

By: Guest

12/27/2009 09:02PM

EVAL and INVERTFITStarted by:rjvo, 12/07/2009 02:37PM
I have a catalog (vzcat):
[code:1:b6c1ad8c95]1 1[/code:1:b6c1ad8c95]
and observation data
(vzdat):[code:1:b6c1ad8c95]1 1.1
[/code:1:b6c1ad8c95]and both the config
files (vzcfge,
vzcfgi):[code:1:b6c1ad8c95]# for EVAL
catalog
V 2
observation
v 2
transform...

1442

By: rjvo

12/07/2009 02:37PM

Finding sigma of a source(in pixels)??Started by:jcely, 12/01/2009 04:23AM
I understand imexamine can give me a
sigma value for an image, but as i see
it-that is a sigma of pixel values.
What i am looking for is a sigma(stdev)
in pixels from the center of a source.
Imexam can give me a FWHM measurement,
which i can relate to...

1497

By: jcely

12/01/2009 04:23AM

IRAF HelpStarted by:Guest, 11/23/2009 05:32AM
To Whom It May Concern:

I am trying to use ecidentify to
identify spectral features in an
extracted emission line FITS image.
After identifying 13 emission lines
over three orders, I am still unable to
use the 'f' key option to show
the resid...

1347

By: Guest

11/23/2009 05:32AM

I need a smaple of ".iraf" ...Started by:astrosona, 11/03/2009 12:50AM
Hello,

I am trying to reduce some data from
HYDRA, in WYIN telescope. I have the
fiber positions in a printed file but i
need to input a ".iraf" file into
DOHYDRA. does any one has a sample
".iraf" file for fiber positions that i
can see and make one f...

2063

By: astrosona

11/03/2009 12:50AM

lscombineStarted by:cjsifon, 10/28/2009 02:49PM
Hello,

I need to combine two multislit images
(from GMOS; I've done it slit by slit
actually), because I have only one
calibration lamp (same observation
field; different grating). So what I
need is that one of the images
"migrates" to the space of the...

1535

By: cjsifon

10/28/2009 02:49PM

Display error with kpnoslit? Or some...Started by:stevenson, 10/27/2009 09:34PM
I am trying to reduce data from the
Goldcam spectrograph on the Kitt Peak
2.1m telescope. I recently installed
V2.14.1 for Mac (Intel) on my iMac (2.8
GHz Intel Core 2 Duo).

When I run doslit (noao.imred.kpnoslit)
it looks fine, until I start to edi...

1400

By: stevenson

10/27/2009 09:34PM

cctran and ccmap rotationStarted by:Sean, 10/17/2009 07:39PM
Hello,
I was using the IRAF task ccmap to
create a linear plate solution for a
known astrometry field. I then tried to
check the solution by setting the
xrotation, yrotation, xmag, ymag, etc.
in cctran and inputing the pixel
coordinates of stars in m...

1498

By: Sean

10/17/2009 07:39PM

Creating a comment for a wrong input...Started by:smp, 09/29/2009 04:16AM
Hi,

I want to know how to display a comment
like

[quote:e4c36606e9]Either YES or NO
options are available for this
parameter.
[/quote:e4c36606e9]
whenever I type any string other than
"yes" / " no" as input to a hidden
parameter in my own task ( a pr...

2056

By: smp

09/29/2009 04:16AM

Equivalent width uncertainty with spe...Started by:JackieFischer, 07/13/2009 07:01PM
I am using "spectool" to calculate the
equivalent width and its uncertainty. I
defined an uncertainty spectrum which
spectool claims is all that is needed to
calculate the EW uncertainty. I have
also specified "YES" for calculated
uncertainties. Howe...

1927

By: JackieFischer

07/13/2009 07:01PM

Meteor Analysis?Started by:solarblast, 04/18/2009 12:14PM
Is anyone associated with IRAF doing
meteor work? Photometry, trajectory
analysis, sky calibration, etc.?

1820

By: solarblast

04/18/2009 12:14PM

Subtracting psf , etc.Started by:Johan, 10/07/2008 02:11PM
Hi,

I refer to the post by Lientjie of a
couple of weeks ago for which there were
no replies.

Is there someone on this forum with whom
we can correspond about crowded field
photometry? Our problem is we do not
know how to evaluate the resulting image
...

2027

By: Johan

10/07/2008 02:11PM

Reduced Chi^2 tests?Started by:amoldowa, 03/26/2008 06:06PM
I posted a couple weeks ago about
fitting a 1D Gaussian to my data and
then seeing how well that curve fits.
Well, what I'm really looking for is the
chi^2 of the fit, or a reduced chi^2.

I can calculate this using the output
from imexamine (when using...

2266

By: amoldowa

03/26/2008 06:06PM

Fwd: TABLES/STSDAS v3.8 and STSCI_PYT...Started by:fitz, 02/26/2008 07:58PM
*******************************************************

TABLES/STSDAS v3.8 and STSCI_PYTHON
v2.6 NOW AVAILABLE

*******************************************************

The Science Software Branch of the Space
Telescope
Science Institute wishes...

2361

By: fitz

02/26/2008 07:58PM

New to IRAF ? ECL ReadmeStarted by:lpetras, 02/13/2008 08:13AM
Being new to IRAF I spent some time
trying to work out what the enhancments
where that made up "ecl". I couldn't
find it on iraf.net so decided to do
some searching,

I was able to find the "official
README". If you want to know what
changed from "stand...

2979

By: lpetras

02/13/2008 08:13AM

searching spectral linesStarted by:esemenko, 11/15/2007 04:21PM
Hello IRAF users!
Is there any tasks or sripts intended to
automatic searching of spectral lines? I
don't need to do identification, just
search and write out to the file
positions of features which were found.
I mean similar task to MIDAS's
search/line...

2807

By: esemenko

11/15/2007 04:21PM

Issues with mkapfileStarted by:Sean, 11/10/2007 06:52PM
Hi,
First of all, let me please say that
if there is a known way to obtain
accurate photometry of a semi-crowded
field on a rapidly, and non-uniformly,
varying background where tip-tilt
adaptive optics was used for the program
fields but, due to the n...

2763

By: Sean

11/10/2007 06:52PM

Photometry results, walkthroughStarted by:Fenris, 08/27/2007 05:56PM
Dear reader,

I am having some problems getting
accurate output from my photometry
procedures. Being a rather new user I
have attempted to read up where possible
and would think I have a decent grasp on
relevant IRAF facilities, but
unfortunately I'm si...

3205

By: Fenris

08/27/2007 05:56PM

yet another psf questionStarted by:patB, 07/11/2007 09:23PM
Does it make sense to do psf photometry
when the only stars without nieghbors
within the fitting radius also have no
neighbors within the psf radius. The
goal is to reduce an image of M51 to get
the magnitude of a supernova within, but
the only candida...

3039

By: patB

07/11/2007 09:23PM

ECL Install ProblemStarted by:Guest, 07/10/2007 10:55AM
Dear colleagues,

There is an error in ecl installation
script `ecl_install_redhat.csh'
when run under Fedora core >6 due to
new tail command:

line 401:

now: tail +$SKIP $0
should be: tail -n +$SKIP $0

Best regards,

Rodion Burenin

2764

By: Guest

07/10/2007 10:55AM

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