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Multi-order text file to fits file fo...Started by:aturby, 07/27/2014 01:23AM
Hi! I am unfamiliar with manipulating
fits files in IRAF, and was hoping
someone could suggest a method that
could be used to convert a simple, but
very large, 3-column text file to a
multi-order fits file that will be
analysed in splot.

The text fil... 		 
2295 3
By: aturby
08/07/2014 12:06PM
Normal Topic
Deblending with splot -- fixing wavel...Started by:chewbacca, 08/03/2014 08:47AM
In fitting multiple Gaussian profiles in
splot or fitprofs, is there a way to fix
one center wavelength and let the others
vary? There appears to be only the
options of fixing all wavelengths,
shifting all wavelengths or letting all
wavelengths vary....... 		 
736 1
By: fitz
08/03/2014 07:32PM
Normal Topic
Mosaicing Direct ImagesStarted by:ahkoeppel, 07/31/2014 07:12PM
Hey there,

I am working with image exposures made
up of 8 CCD frames and I have been
trying to create a master image from
several exposures in shifted regions
(which each have eight frames).

I was able to stack the images with
mscstack, but the ta... 		 
1281 2
By: valdes
08/01/2014 04:27PM
Normal Topic
splot: deblending with constant redshiftStarted by:chewbacca, 07/27/2014 11:47AM
Hi,

I am using splot to fit doppler shift in
absorption lines that are very weak, so
I would like to take advantage of the
'single' option in the deblending
routine.
However, my lines are separated by ~150
nm so Delta(lambda) can vary quite a lot
be... 		 
840 2
By: chewbacca
07/28/2014 07:44AM
Normal Topic
Spectroscopy - Wavelength Calibration...Started by:chewbacca, 07/17/2014 09:18PM
Hi,

I have a raw spectrum to which I want to
assign a wavelength solution (dispersion
function).
I know the standard way to do this is to
run identify on a lamp spectra to fit a
dispersion function, and then assign
such a file to the field REFSPEC1... 		 
2853 3
By: valdes
07/25/2014 08:40PM
Normal Topic
Deblending with splot using input fil...Started by:chewbacca, 07/24/2014 09:06PM
Hi,

If I want to use a file to specify
wavelengths, widths, fluxes etc for the
lines I am trying to fit with the
deblending 'd' routine in splot, in what
order should I list the information in
the file e.g.

wavelength1 flux1 g fwhm1 eqw1 ...
wav... 		 
1137 2
By: chewbacca
07/25/2014 08:06PM
Normal Topic
Apall: Optimally extracted spectra do...Started by:stpjhj, 07/09/2014 07:15PM
Dear all,

I am trying to reduce a longslit
data(from SUBARU FOCAS, btw,) and I am
having some problem that I couldn't
understand.

When I invoke apall task with weight
option set to "none," resulting spectra
seems fine.
But if I set weight option ... 		 
1333 1
By: valdes
07/25/2014 05:41PM
Normal Topic
Background subtraction from spectraStarted by:Francesca, 07/16/2014 10:23AM
Hi,

I am using the "background" task in iraf
to subtract the background from some 2d
spectra. I am using the task in
interactive mode because I would like to
change the fit windows along the
spectrum wavelength. This is what I do:
once the task is la... 		 
1581 1
By: valdes
07/25/2014 05:31PM
Normal Topic
splot -- changing sigma0 interactivelyStarted by:chewbacca, 07/25/2014 02:14AM
Hi,

Is there a way to change sigma0
interactively in splot (when doing error
analysis), or do I have to quit splot
and change it in epar whenever my
continuum rms changes?
Thanks! 		 
638 1
By: fitz
07/25/2014 04:13PM
Normal Topic
Help! Started by:dgulledge1, 07/23/2014 06:02PM
Hi, my name is Deborah and I'm an
undergraduate student at Austin Peay
State University, trying to teach myself
how to use IRAF.
Right now, I'm attempting to create
fringe frames, but every time I try to
run ccdproc on the fringe images I have
selected... 		 
611 1
By: fitz
07/23/2014 06:12PM
Normal Topic
can't terminate entry mode in mkcatalogStarted by:Paulasarkis, 06/26/2014 07:50AM
This is the first time I try to do
photometry using IRAF. I want to make a
catalog for my standard stars. I am
using the package [b]mkcatalog[/b].

I finished entering the name of the
columns and their width. I enter ^Z and
^D to terminate entry mode... 		 
900 2
By: Paulasarkis
06/29/2014 09:46PM
Normal Topic
daopars.mergerad problemStarted by:fitz, 06/29/2014 02:29PM
[color=red][Moderator's Note: Forward
from story posting][/color]


I'm running a script to perform psf
photometry on a series of images. Doing
this I don't want stars to be merged.
Therefore I set daopars.mergerad to 0.0
but stars still get merged?... 		 
1512 0
By: fitz
06/29/2014 02:29PM
Normal Topic
asthedit and lst/airmass not being ca...Started by:mikesdbv, 06/23/2014 03:17PM
I am having a bizarre problem. I am
calculating lst and airmass using
asthedit and I've found an instance
where it doesn't seem to be working
correctly, yet I can't figure out why.
This will be long, as I try to be
complete.
First, the raw header... 		 
1048 1
By: fitz
06/23/2014 09:23PM
Normal Topic
spectrophotometry with sbands or some...Started by:gmaravel, 06/11/2014 09:09PM
Hi all! I have Halpha and R imaging
(obtained with the ESO/WFI) and I want
to flux calibrate the sources we have
identified. For these we have a series
of exposures for spectrophotometric
standards. As far as the Halpha
standards I know that I have to c... 		 
1331 2
By: gmaravel
06/13/2014 01:42PM
Normal Topic
Fourier Filtering with FXCORStarted by:fitz, 05/12/2014 11:57PM

[color=red][Moderator's Note: Forwarded
from story submission][/color]
Hello:

Apologies if this is not the right place
to submit questions and if so, can
someone please explain how to post a new
question in a forum?

I noticed that fxcor can do ... 		 
1079 4
By: msoey
06/12/2014 02:46PM
Normal Topic
ccdproc uses "nointerp" parameter twi...Started by:sontag, 06/09/2014 06:46PM
Hi Mike,

A PyRAF user found something which the
CL allows but PyRAF does not. In
checking it, I realized it looks like it
may be a bug which you may wish to fix.

In ccdproc.cl, there are two calls to
_ccdtool().

In both of them, the "nointerp"... 		 
965 1
By: fitz
06/09/2014 07:05PM
Normal Topic
APPHOT Bug under PyrafStarted by:fitz, 05/12/2014 04:22PM

[color=red][Moderator's Note: Forwarded
from story posting][/color]


qphot outputs an invalid floating-point
number (such as "-299866.375-58") when
the coordinates of the object to be
measured fall considerably off (>= ~100
degrees) the FITS ima... 		 
1134 2
By: iaa
05/22/2014 02:15PM
Normal Topic
problem with installing FOCASRED packageStarted by:jks, 03/20/2014 09:37AM
Dear you?..


First of all, I'm sorry for terrible
English.


I'm trying to reduce observation data
which was taken with spectroscopy
(Subaru, FOCAS)
And I tried to do distortion correction
for my data.
the task "distcalib" didn't work on Mac
(e... 		 
1367 2
By: jks
05/21/2014 02:38PM
Normal Topic
cosmicrays ERROR: PLIO: reference out...Started by:dr.michi, 05/12/2014 12:38PM
I am trying to run cosmic rays on 2D
echelle spectra. It has been working
until a recent (minor) setup change: the
2D image got slightly bigger.
I am running PC-iraf 2.16 on a
debian/linux version 6.0.9.
It runs fine if I run a sub image (e.g.
1:500... 		 
1984 4
By: dr.michi
05/21/2014 01:51PM
Normal Topic
LA Cosmic Installation ProblemStarted by:MoIRAF, 05/20/2014 07:26AM
I have been trying to install lacosmic,
I followed the instructions on:
http://www.astro.wisc.edu/~cigan/reducing/lacos/lacos.html.
stsdas had already been installed. So,
all I did was download the
lacosmic_spec.cl file, put it in a
directory, and the... 		 
2124 2
By: MoIRAF
05/20/2014 08:18AM
Normal Topic
Fitcoords 'Fitted coordinates at the ...Started by:tfish13, 05/09/2014 07:26PM
Hello! I'm using trying to wavelength
calibrate some 2D spectra and having
trouble somewhere in the
Identify/Reidentify/Fitcoords process. I
am running through the reduction process
for two sets of data (red and blue
spectra), taken simultaneously. The ... 		 
3091 4
By: tfish13
05/13/2014 04:00PM
Normal Topic
Why do I always get DARK CORES when u...Started by:nusjjsun, 04/24/2014 05:26AM
Hi everyone, I'm new to IRAF and now
trying to perform PSF-fitting to a
couple of white dwarfs that are blended
with DAOPHOT package. I followed a few
online tutorials to set up the
parameters and used the ALLSTAR command
at last. But a problem has exis... 		 
1509 1
By: valdes
05/12/2014 09:11PM
Normal Topic
Combining apertures with scombineStarted by:colinn, 04/24/2014 06:46AM
Hi
I'm trying to combine the orders from an
echelle spectrum that have been
separated into individual files using
scopy into one long spectrum so I can
see the overall shape.
I am using scombine.
My input file is
@inscombine1252_bt14long.lis, this co... 		 
1213 1
By: valdes
05/12/2014 09:08PM
Normal Topic
esoselect doesnStarted by:Agis, 05/06/2014 04:38PM
Hi,

I have a problem with the keyword
'HIERARCH ESO INS DPOR POS'. I need to
check the value of this keyword in the
headers of a long list of .fits images.
Using the esoselect.cl script would be
very helpful for me but when I execute
it I get:

ecl... 		 
866 1
By: fitz
05/06/2014 05:28PM
Normal Topic
Install xgterm and ximtoolStarted by:aguado, 04/18/2014 05:39PM
HI:

I already have installed xgterm and
ximtool in ubuntu, but I cannot open
it:


aguado@aguado-asus:~$ xgterm
bash: /usr/local/bin/xgterm: cannot
execute binary file

I have installed in this way:

http://www.astronomy.ohio-state.edu/~kha... 		 
17232 4
By: aguado
04/20/2014 07:05PM
Normal Topic
ccdproc problems on a new 2.16.1 systemStarted by:Charles Knox, 04/04/2014 08:07PM
We have been using ccdproc from the
mscred package to do processing of data
from the Burrell Schmidt on Kitt Peak.
The data is 4kx4k and is read out with 4
amplifiers. There is an overscan for
each amp. We take a raw file and use
mkmsc with a data fil... 		 
5175 3
By: fitz
04/04/2014 11:11PM
Normal Topic
IRAF and ds9Started by:massey, 04/04/2014 01:40PM
We're having a problem displaying images
taken with our new imager using IRAF
2.16.1 and the latest version (7.2) of
ds9. I'm having the same problem on my
MacBook Air as I am on the Mac Pro at
the telescope; both are running IRAF
2.16.1 and OSX 10.9.2... 		 
1117 1
By: fitz
04/04/2014 02:11PM
Normal Topic
Bug using Fxcor Sinc function to fit ...Started by:baddison2005, 11/27/2013 06:23AM
Hi All,

I'm having some difficulties with using
the sinc function to fit the
cross-correlation function in Fxcor. I
wrote a script in pyraf to process a
bunch of spectra and produce radial
velocities with Fxcor. I have no issues
if I use the other fi... 		 
8654 24
By: baddison2005
03/30/2014 04:39AM
Normal Topic
How to divide a WFPC3 bad pixel mask ...Started by:Santiago, 03/20/2014 01:16PM
I have this problem, i'm processing some
WFPC3 with xzap extern package but i'm
doing it such a way the task is applied
in layer [1] which contains 1 half of
the detector and then another run with
the [4] extension which contains the
other half of the d... 		 
1316 6
By: fitz
03/25/2014 03:47AM
Normal Topic
OBJMASKS ProblemStarted by:fitz, 01/26/2014 10:30PM

[color=red][Moderator's Note: Forwarded
from user story submission][/color]

When trying to run nproto$objmasks with
default parameters in a brand new
installation of scisoft (iraf 2.16) I
get this error message:
ecl>objmask test msk
ACE: NOAO/IR... 		 
3049 7
By: ricpermar
03/24/2014 04:20PM
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