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problems with sbandsStarted by:, 07/24/2006 02:32PM
I am using sbands for the determination
of the equivalent width of an absorption
line in a stellar spectrum.

Using the mean location and width of the
line and setting the pseudo continuum
parameters on the left and right of the
line,
gives me in 1 case...

5207

By: valdes

07/24/2006 02:32PM

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

problem with task allstarStarted by:Guest, 07/19/2006 08:58PM
Hallo,

I am an iraf user and I have encountered
some problems with the daophot task
allstar. I work on a 64 bit linux
machine.
After I give the command "allstar" and
enter all the parameters, I get the
following error:

PANIC in `/usr/stsci/iraf/noao/...

2580

By: fitz

07/19/2006 08:58PM

External DAOPhotStarted by:hbloemha, 07/18/2006 07:01PM
I'm trying to use DAOPhot, seperate from
IRAF, to do photometry. I'm new to the
whole world of photometry, and need some
help. I've succesfully downloaded
DAOPhot executables, and am trying to
use them. Whenever I try to ATTACH an
image file, it says...

2701

By: fitz

07/18/2006 07:01PM

Stellar grouping issuesStarted by:rachel, 07/18/2006 06:55PM
I was wondering how PSF selects what
stars it includes in a group and if
there was any way this could be changed.
The field I am working on contains a
density of stars such that allstar
doesn't seem to be able to subtract
them. Some of the stars only ha...

2738

By: massey

07/18/2006 06:55PM

Problem with imexamine & photStarted by:rachel, 07/12/2006 04:06PM
Hi,

I am trying to remove stars from an
image in order to do photometric
analysis on a galaxy. I am running the
killall task, created by Buta and McCall
(see Buta R.J. & McCall M.L. 1999,
ApJ, 124, 33). It locates the stars
using daofind and measur...

3657

By: fitz

07/12/2006 04:06PM

Ccdmask..bad pixel maskStarted by:Nishkin, 07/11/2006 06:45PM
It's me again...

When I try to use ccdmask to make a bad
pixel mask with a division of flat
field...I get the error "Invalid
floating point operation"

I had flat fields of 20s and 4s..I
normalized them both with imsurfit and
divided them with imarith ...

3716

By: fitz

07/11/2006 06:45PM

multiple spectraStarted by:Nishkin, 07/11/2006 03:17PM
Hello,
Is there a command that allow me
to put, for exemple, 5 spectra on the
same graphic? Something like 5 spectra
one under the other with the axis of
wavelenght at the bottom.

Thanks for the help!

2990

By: Nishkin

07/11/2006 03:17PM

igi questionStarted by:turnmeintosnow, 07/07/2006 07:53PM
I know this is probably a silly question
but I'm kind of new to iraf and igi and
I'm trying to late out pairs of pictures
(one from ACS and one from Subaru) next
to each other and have something like a
6x6 setup of pairs of pics (so 36 total
on the page...

2372

By: fitz

07/07/2006 07:53PM

Cosmic RaysStarted by:Nishkin, 07/04/2006 03:03PM
Hi all,
I seem to have a problem when I
want to remove cosmic ray. I use the
task cosmicrays but it seems not the
remove much...I do not run the task
interactively since I do not understand
much what to do in there.
I know they are cosmicrays and...

2716

By: fitz

07/04/2006 03:03PM

SOS!!!! - problem with response taskStarted by:danila, 07/03/2006 11:46AM
Hello everybody,

Please, help.

I have some problem with response task.
This problem has already
worry me. :(

The heart of the problem in few words:

I set parameters for response:

PACKAGE = longslit
TASK = response

calibrat= Fl...

6870

By: danila

07/03/2006 11:46AM

MSCMATCH FITS header outputStarted by:Guest, 07/02/2006 12:46PM
Hiya,
We need to re-examine in detail a
previous astrometric
solution derived using mscmatch on
4m-MOSAIC images.
We have no detailed record of the fit
solution
or number of stars used, but
the FITS header in the final merged
image is

MSCCMATC= 'Jul ...

3024

By: valdes

07/02/2006 12:46PM

question about astrometry and finderStarted by:Guest, 07/01/2006 12:42AM
Hi Deidre,
[quote:33afddf059]If I have a plate
solution from an astrometry program
outside of IRAF, is there some way to
put this info into the header of an
image so that I can have RA,DEC readout
in ximtool? Phil gave me an astrometry
fortran program a...

2343

By: Guest

07/01/2006 12:42AM

I have some problem with response taskStarted by:Guest, 06/30/2006 03:40PM
Hello,

I have some problem with response task.

I set parameters for response:

PACKAGE = longslit
TASK = response

calibrat= FlatS.fits Longslit
calibration images
normaliz= FlatS.fits
Normalization spectrum images
respon...

2282

By: valdes

06/30/2006 03:40PM

combine, flatcombine, zerocombine, etc.Started by:jhickey, 06/30/2006 02:08AM
I've just installed IRAF on a
Redhat/Fedora box. Most of the IRAF
tasks that I've tried so far work
normally. The one exception is the
combine tasks in CCDRED. When I try to
run input images (lists or wildcards)
with combine tasks I get the
following...

2958

By: fitz

06/30/2006 02:08AM

Adding tasks in IRAFStarted by:JediWill, 06/29/2006 09:28PM
Hello everybody,

I am trying to add a task into my
login.cl file. I am putting the
following after all the other tasks:

task $varstar5 = "$home/Will/varstar5"

When I do this, it kills iraf and tells
me I need to rerun mkiraf. So, I guess
my questi...

5466

By: JediWill

06/29/2006 09:28PM

asthedit problemStarted by:JediWill, 06/28/2006 08:48PM
Hi everybody,

I am trying to update the headers of my
image files with asthedit. I am using a
.cmds file. The problem I am having is
that I am getting a syntax error when I
try to run it. I have V2.13 installed.
The weird thing is that when I use a
sch...

5059

By: fitz

06/28/2006 08:48PM

finder/tfinder questionStarted by:Guest, 06/28/2006 02:53AM
Hi Phil,

> But, here's my question for you.
There are LOTS of USNOB stars on
> the frame, and I can easily
generate
> a coordinate list
> 19:12:12.321 +12:12:12.03
> 19:12.13.123 +12:10:12.23
> etc
> of stars that should be on o...

2366

By: Guest

06/28/2006 02:53AM

Round off problem in heditStarted by:massey, 06/28/2006 01:23AM
Hi, Mike et al---

I have an image that has astrometric
parameters that were added via tfinder,
specifically numbers like:

CRVAL1 = 0.349583333333341
CRVAL2 = -15.295722222222
CRPIX1 = 1079.04400338829
CRPIX2 = 1242.12076751727
CD1_1...

3126

By: fitz

06/28/2006 01:23AM

longslit packageStarted by:bonita, 06/27/2006 02:26PM
Hi,

I've encountered some problem in using
the TWODSPEC.LONGSLIT.FITCOORDS
task. I'm using IRAF v2.12.2 on
linux/Fedora Core 4.

I've run the IDENTIFY and REIDENTIFY
tasks in determining the dispersion
solution every 10 lines. However, when
trying to...

5924

By: fitz

06/27/2006 02:26PM

Problems with multidrizzleStarted by:koneil, 06/23/2006 01:32PM
We have pyraf Revision 2.12.2a, STSDAS
Version 3.5, and DITHER Version 2.2
installed on our redhat machines here.
It seems to work fine for most things,
but when I try to run multidrizzle I get
an error. Could you please tell me
what might be wrong w...

4794

By: m223

06/23/2006 01:32PM

linebias: starting pixel no longer Im...Started by:dvbowen, 06/23/2006 03:14AM
So I've been slogging over a hot laptop
all night reducing spectra, when I
make a nasty mistake and delete all the
final reductions (duh!). Not to
worry... I can retrace my steps and
re-extract the spectra. However,
suddenly,
I find that the behaviour o...

3363

By: fitz

06/23/2006 03:14AM

display command error messageStarted by:Guest, 06/22/2006 11:21PM
Iraf,

I've just installed iraf & DS9 on a
Linux/Redhat/Fedora machine.
Everything seems to be working just fine
(DS9 running), except "display".
When I issue a >display "image file"
command I get the following error
message;

ERROR: Cannot open ...

2244

By: fitz

06/22/2006 11:21PM

gmos gdisplayStarted by:ewehner, 06/21/2006 12:14AM
Hi,

I'm having trouble displaying gmos
imaging fits files using gdisplay. When
I set stdimage=imt4096 and use mscimage
with fill+ it displays the same MEFs
just fine, but when I set
stdimage=imtgmos and use gdisplay,
nothing shows up in ds9 and I get ...

3855

By: ewehner

06/21/2006 12:14AM

Calling CCDPROC from a procedure scriptStarted by:bpohl, 06/20/2006 09:30PM
Greetings and apologies if this question
has already been asked and answered.
i'm trying to write a procedure script
to automate some basic CCD processing
tasks. I call ccdproc from within the
script, but it seems to get confused
when I sepcify the ze...

3229

By: bpohl

06/20/2006 09:30PM

imcombineStarted by:Guest, 06/19/2006 04:36AM
Dear Iraf expert,

I happened to notice that the option
"scale" in imcombine does not
produce the correct sigma image when the
input images have negative
counts. Using scale=none, median or mean
I always obtain the same result
as sigma image. The sam...

11175

By: pskoda

06/19/2006 04:36AM

problems with installation of RVSAOStarted by:olivia, 06/16/2006 10:38AM
Hello,

I'm trying to install RVSAO package.
I've followed the instructions to the
letter, but when I do

[b:4ecafc95ee]cl> mkpkg update
>& spool[/b:4ecafc95ee]

which is supposed to install the
package, the spool file comes out full
of warnin...

8227

By: knine

06/16/2006 10:38AM

adding noise to imagesStarted by:orsola, 06/15/2006 08:15PM
Hello -

I have obtained arc spectra using 300
sec exposures and I want to know how
much I can reduce this rather long
exposure time and still get the same
wavelength calibration precision.

I presume I can add noise with mknoise
(although I have not y...

3706

By: valdes

06/15/2006 08:15PM

Heliocentric Julian date converterStarted by:guest, 06/15/2006 05:59PM
Hi all,

Could somebody tell me how I can use
IRAF to convert from HJD to JD?

Thanks!

5745

By: fitz

06/15/2006 05:59PM

fxcor echelle aperture regionsStarted by:orsola, 06/15/2006 03:24PM
Hello -

after browsing posts regarding
Xcorrelating spectra I still have no
answer for my question. So here is a new
post.

I am Xcorrelating echelle spectra. I
would like all 23 apertures to be used
and only ONE shift result to be returned
to me. I k...

5681

By: orsola

06/15/2006 03:24PM

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