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timing with fxcor and rvcor (and setj...Started by:sdb_mike, 06/01/2007 04:40PM
I am doing time-series spectroscopy
measuring pulsation velocities using
fxcor. As such, our timing is incredibly
important. I have 2 issues related to
this:
The txtonly output of fxcor provides
time in HJD. However, I want JD output
because then I will...

4277

By: sdb_mike

06/01/2007 04:40PM

to Mr. valdesStarted by:omizzolo, 11/06/2006 09:11AM
I am working on mosaic images obtained
with the 90prime ad Kitt Peak. I
obtained an astrometric solution for one
mosaic and now i would apply this
solution to the other mosaic of the same
field. I tried to use the iraf task
mscimage to do this, using a ...

2604

By: valdes

11/06/2006 09:11AM

tomultispecStarted by:kay, 10/02/2006 10:36AM
Hi

I am currently analysing STIS data and
have converted the STIS 1-D spectra from
FITS format to IRAF files using
TOMULTISPEC. Am I correct in assuming
that only columns with the wavelength
and flux will be included in the IRAF
files or can I have a ...

2305

By: valdes

10/02/2006 10:36AM

TPROJECT bug - output filenamesStarted by:raybutler, 07/30/2009 10:40AM
Hi,

I believe I have found a minor but
irritating (aren't they all?!) bug in
TPROJECT.
It does not seem to be happy with a long
filename for its output table.

E.g. in testing (script excerpt), I
found that this works:

ratio="./GOOD/klwz0408_.txt"
tpr...

1443

By: fitz

07/30/2009 10:40AM

tracing flats with APFLATTENStarted by:es, 03/02/2006 07:09AM
Hi!

I found the following question and
answer (see below) in your forum but the
solution does not work for me. Do you
have any other suggestions how to solve
the tracing problem in apflatten? Even
using a standard star traced with
aptrace as a refere...

3833

By: valdes

03/02/2006 07:09AM

transform an image from galactic to c...Started by:cromanzu, 04/06/2006 05:25PM
Hi

I am trying to transform a FITS image
written in galactic coordinates
to fk5,, but not only modyfing the WCS
information, but also
remapping the pixels.
I tried to use imcctran to get the new
WCS and the rotation
but when I enter these into imlintr...

2691

By: valdes

04/06/2006 05:25PM

Transforming a 1x1 binned image to 2x...Started by:dschumac, 10/31/2009 08:57PM
Does anyone know if there is a way in
IRAF to take an image that is binned 1x1
(so say 1024x1024 pixels) and change it
into a 2x2 (in this case 512x512 pixel)
binned image?

My problem is that I have star images
binned 1x1, but I only have correction
im...

5094

By: fitz

10/31/2009 08:57PM

Trimming Fits image in ds9Started by:bedosti, 06/21/2007 09:33PM
Is it possible to trim a fits image in
ds9? I have a large image and I need to
produce a new one, containing only a
part of the original.

Any help would be appreciated.
Thank you
Bedosti

4322

By: fitz

06/21/2007 09:33PM

Trouble building CTIO on UbuntuStarted by:bpohl, 06/25/2007 09:26PM
Howdy, I've just installed IRAF 2.12.2
with the patch-2a on a machine running
Ubuntu with linux kernel 2.6.17-11. I'm
trying to build the CTIO package from
source, something i've done dozens of
times on redhat systems, but the build
fails. There are m...

2936

By: fitz

06/25/2007 09:26PM

Trouble creating a packageStarted by:JanRap, 05/17/2010 10:02AM
I am trying to create a simple package
to test whether I can get one task to
call another.

Below is the package file for the "test"
package (test.cl) as well as the two
tasks I am using.

[code:1:031f3b7b56]# Package script task
for TEST package

# Loa...

1623

By: JanRap

05/17/2010 10:02AM

trouble installing x11irafStarted by:al374, 04/27/2008 07:31PM
Hello, I'm running on OpenSUSE v10.3

I unloaded the x11iraf-new_gcc.tgz in my
local direction

% tar -xvf x11iraf-new_gcc.tgz

and I am trying to utilize the install
command, because xmkmf isn't a known
command for me.

I'm having trouble with th...

2945

By: al374

04/27/2008 07:31PM

Trouble with external package tablesStarted by:eratnayake, 12/07/2010 10:39AM
Hi,

I'm running in to an error. Here is my
console output.

[erathna@osiris ~]$ cl
setting terminal type to xterm...

NOAO/IRAFNET PC-IRAF Revision 2.14.1
Mon Sep 15 10:12:05 MST 2008
This is the RELEASED version of IRAF
V2.14 supporting PC sys...

2806

By: eratnayake

12/07/2010 10:39AM

Trouble with Imarith! (Error: pixel s...Started by:carl2007, 05/09/2007 09:52PM
Dear all,

We are having trouble with the imarith
command in the noao package of IRAF.

In carefully analyzing our scaled
images, the calculated pixel value does
not exactly match the value we expected.
It's close but not exact.

So for instance we are ...

3545

By: fitz

05/09/2007 09:52PM

Trouble with Isophote packageStarted by:mostskier, 07/21/2009 02:29PM
Hi,

I am trying to perform surface
photometry on an optical image of a
galaxy to create a surface brightness
profile as a function of galactocentric
radius. I have been trying to use the
ellipse task in the Isophote package to
do this.

The problem ...

1652

By: valdes

07/21/2009 02:29PM

Troubles with installation of mscred ...Started by:Chrissyo, 03/20/2010 10:47AM
Hi everyone.

I'm not a first-time iraf user, but I'm
a first-time iraf installer. I'm
working with some multi-extension fits
files, so I've been trying to get
version 4.9 of mscred installed. I've
already got version 2.14 of iraf
successfully install...

2682

By: Chrissyo

03/20/2010 10:47AM

Truncate Fits HeaderStarted by:AnTaR3s, 11/30/2010 02:43PM
Hi

In order to make a program work, I need
to truncate the fits header. For that I
need to know how many bits I have to cut
off the original fits-file.
Any idea how I can find that out? I
thought vi or emac might do that, but
how?

cheers

1104

By: fitz

11/30/2010 02:43PM

tvmark usuageStarted by:anestis_tziam, 01/29/2015 08:47AM

Hallo to all

I used daofind on my image to
create a .coo file. When i tried to use
tvmark to overplot the image with the
.coo file i got just a black empty
field. This is my epar. Any hint on
what I have done wrong? Thanks a lot

...

1972

By: fitz

01/30/2015 05:17PM

Two spectrophotometric standardsStarted by:jsm, 06/29/2011 04:49PM
Hello,

I would like to flux calibrate a
spectrum using the data of two
spectrophotometric standard stars (one
red and one blue).

I was able to create two flux files, one
for each star, using the task
"standard". I could obtain the
sensitivity function...

2949

By: valdes

06/29/2011 04:49PM

txdump errorStarted by:agiltinan, 08/18/2006 10:16AM
Hi all,
I have recently installed iraf on a
cygwin/XP machine.
Most functions run ok. However, when i
try to use 'txdump' i get the following
error:

'ERROR:Cannot open connected subprocess
(ptools$x_ptools.e)'

As a result my scripts wont function on
...

2725

By: agiltinan

08/18/2006 10:16AM

Understand equations in FXCORStarted by:rohit, 01/28/2009 09:08PM
Problem:

As I am getting extremely weird answers
when calculating RV of known stars, I
decided to manually verify the
calculations FXCOR is doing.

The equations listed in the manual are:

ref_rvobs = catalogue_vel_of_template -
H(temp) # obs. vel....

4677

By: rohit

01/28/2009 09:08PM

Units of measurementStarted by:asino89, 04/05/2008 03:06PM
I'm having first experiences with IRAF.
I've been introduced by an astronomer
who tough me how to use splot to grab
info about spectra of quasars.
I've been calculating the average value
at 5100A, but i have some problems with
the units of measurement. ...

2734

By: asino89

04/05/2008 03:06PM

Unresolved point sources with gallistStarted by:rachanab, 07/07/2017 11:26AM
I am making fake sources for my
completeness simulations and I am using
gallist + mkobjects to do this. I can
get a distribution for my sources using
parameters like x and y coordinates,
magnitudes, profile types, half-flux
radii, axial ratios, position...

1125

By: rachanab

07/07/2017 11:26AM

Unwanted prompt for list-directed par...Started by:JanRap, 06/01/2010 10:01AM
Hi

I am suddenly getting prompts for my
list-directed structs. Does this have
anything to do with the tasks being in a
package? Below is the relevant code:

[code:1:32d189bccf]# The main task for
the pipeline, from which
# other tasks are called

proc...

1847

By: fitz

06/01/2010 10:01AM

uparm location slows iraf?Started by:LBT_Dave, 06/13/2009 10:18AM
I ran into something interesting and
unexpected yesterday. I was running a
script I wrote that loops through guider
images (100x100 pixels each) and pulls
some info from the headers with hselect,
then uses tstat to get the means and
sigmas (i.e. nothin...

2461

By: fitz

06/13/2009 10:18AM

Update External Package MSCREDStarted by:cptsteiny, 07/19/2006 09:37PM
Hello, a friend of mine has a really old
install of IRAF and a really old version
of MSCRED (I believe it was made in
1998). Updating IRAF doesn't seem to be
an option at the moment.

Anyway, we would at least like to update
the MSCRED package. To upd...

2806

By: fitz

07/19/2006 09:37PM

Updating WCS of Chandra fitsStarted by:daisymak, 12/15/2006 04:59AM
I am working on Chandra X-ray data.
I have used ccmap to do astrometric
correction of one of the images obtained
by using the command dmcopy on the evt2
file of Chandra. Then I have a database
for storing the result of how to
transform the images.
Wha...

2427

By: fitz

12/15/2006 04:59AM

Use of ccdlist command in mscred packageStarted by:Guest, 02/16/2006 06:10PM
Dear help;
I can't get ccdlist to recognize or
report the 'ccdtype' aka 'imagetyp'
on fits images. I notice in F. Valdes'
'help page for mscguide'
paragraph 3.3 he states that the task
is specialized and provides a
description of the name...processi...

3485

By: valdes

02/16/2006 06:10PM

Use of DopcorStarted by:rohit, 05/13/2009 01:59PM
I have been trying to combine two
spectra taken at two different epochs.
But before adding them (using sarith
task), I need to correct for doppler
shift. From the help under dopcor, I
find that I need to use rvcorrect to
find vhelio:

spectra1.fits ha...

3650

By: rohit

05/13/2009 01:59PM

Use of imedit in crowded fieldsStarted by:paco, 04/22/2008 02:03PM
Hi Mike et al.,
I am trying to use imedit on pretty
crowded and confused images (in my case
regions in emission-line images from
which I have subtracted a continuum
image to remove the stars and keep the
nebulosity alone). Often there's a star
that is ...

2290

By: paco

04/22/2008 02:03PM

Using an completely empirical psf in ...Started by:jwalton, 04/21/2008 01:39AM
I am trying to perform psf photometry on
a crowded field using the IRAF Daophot
package, but I am running into a
problem. I am not going about the
standard procedure of creating a psf
from my image since there are not enough
"good" stars to create the p...

5663

By: raybutler

04/21/2008 01:39AM

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