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Multiple images in photStarted by:russty, 10/19/2006 12:24AM
I cannot get the phot task to work on on
multiple images.

I ran daofind on a list of images and
got multiple of coo files, but when I
then try to run phot with that same list
of images I get the following error.
ERROR: Cannot open file (23a1.coo.0)... 		 
3313 1
By: phil
10/19/2006 12:24AM
Normal Topic
help on IRAF task 'ellipse'Started by:IMarinova, 10/17/2006 11:32PM
Hi,
I need to determine the goodness of an
ellipse fit for a galaxy. What is
the best way to do this using the output
parameters of ellipse: A3, A4,
B3, B4, and ABIG? I understand that A3,4
and B3,4 give certain deviations
from perfect ellipticity, but ... 		 
2543 1
By: fitz
10/17/2006 11:32PM
Normal Topic
S/N per pixel spectrumStarted by:paulartcoelho, 10/17/2006 07:08PM
hi there,

this should be obvious, but i confess
i'm confused.

i extracted a longslit spectrum using
apall, and did variance weighting,
extracting the extras spectra (raw,
background and sigma).

i need to obtain a kind of "S/N per
pixel spectrum as a... 		 
10408 4
By: ozbasturk
10/17/2006 07:08PM
Normal Topic
power spectrumStarted by:ebru, 10/13/2006 07:10AM
hi!
how cam we make time series power
spectrum analysis in iraf

thanks 		 
3453 3
By: fitz
10/13/2006 07:10AM
Normal Topic
Newredshift problemStarted by:Sheona, 10/12/2006 06:59PM
Hi,

I'm trying to run the newredshift
package and every time I do so I get the
error segmentation violation.

Does anyone have any ideas on how to fix
this?

(I'm running it on .fits spectra) 		 
2100 1
By: fitz
10/12/2006 06:59PM
Normal Topic
Problem with PSFStarted by:russty, 10/12/2006 01:16AM
When I'm in the package
noao.digiphot.daophot and try to run the
PSF command I get the following error:
ERROR: Cannot open connected subprocess
(daophot$x_daophot.e)

Does anyone know why this would happen?

Thanks 		 
5461 6
By: Janewaypi110
10/12/2006 01:16AM
Normal Topic
nproto.objmasksStarted by:holwerda, 10/05/2006 03:07PM
Hello
I have a very peculiar problem with
objmasks. As soon as I've applied it
once on a fitsfile, it does not allow me
to redo it again. 
What do I need to delete in order to
redo the objmasks. I need to determine
the optimal settings for my data. 
I... 		 
2420 1
By: valdes
10/05/2006 03:07PM
Normal Topic
error estimates with SPLOTStarted by:danila, 10/04/2006 06:17PM
Hello everybody!

I am trying to learn how to estimate
errors of line fluxes determination by
SPLOT. As I understand from "ERROR
ESTIMATES" part of description of SPLOT
help it is needed to specify two
parameters: "inverse gain" or invgain
and "constan... 		 
5102 2
By: fitz
10/04/2006 06:17PM
Normal Topic
determination of equivalent widthsStarted by:Guest, 10/04/2006 03:55PM
Dear Sir or Madam,

my name is Martin Tafelmeyer, I am a PhD
student at EPF Lausanne. I am using
IRAF to determine equivalent widths of
spectral lines for metallicity
determination.
To automatize the procedure I created a
cursor file containing the line... 		 
11290 11
By: starburst84
10/04/2006 03:55PM
Normal Topic
apall problems w/ coordinate system:o...Started by:paulartcoelho, 10/03/2006 08:43PM
hi there,

I have a set of GMOS (Gemini) longslit
spectra. I reduced them using Gemini
package, up to wavelength calibration
(gstransform). From now on I want to use
noao package to extract the apertures
(apall). Because gemini fits has a
specific forma... 		 
12058 1
By: valdes
10/03/2006 08:43PM
Normal Topic
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 ... 		 
2309 1
By: valdes
10/02/2006 10:36AM
Normal Topic
iraftermStarted by:hbloemha, 09/30/2006 03:53AM
When I am in the digiphot.daophot
package of iraf and use the imexam
feature to view a radial plot of my
.fits image, the irafterm window opens
up correctly, displaying all the right
numbers, however the radial plot itself
does not show up at all.
Any... 		 
6180 4
By: hbloemha
09/30/2006 03:53AM
Normal Topic
geomap surface2 coefficientsStarted by:footstyle, 09/29/2006 11:36PM
What do the coefficients of surface2 in
the *.db file produced by geomap
actually mean or act upon? I have
trawled through pyraf's documentation
and iraf.net questions to find
information about this, but have been
unable to reproduce the behaviour
sugge... 		 
4440 3
By: footstyle
09/29/2006 11:36PM
Normal Topic
A Problem with DAOPHOTStarted by:salis, 09/29/2006 01:29PM
Dear IRAF people,

I am trying to use DAOPHOT with my CCD
observations.

But I get the error below when I run
daofind. Do you have any idea what this
error related with?

There was an old topic in the Forum I
found also concerns the same error. But
sol... 		 
5285 1
By: fitz
09/29/2006 01:29PM
Normal Topic
hedit/hselect boolean query on imaget...Started by:rbroberts, 09/28/2006 03:11AM
I'm stuck trying to select a set of
images based on imagetyp which need to
have their imagetyp changed. I've tried
about every permutation of comparison I
can think of but consistently get this
error in every case:

[code:1:2373794b8e]ERROR: Imposs... 		 
4947 5
By: fitz
09/28/2006 03:11AM
Normal Topic
changing data values with imshift and...Started by:bwp, 09/27/2006 04:32PM
I am attempting to analyze data from the
Hubble archives. At this stage, my goal
is to align and median combine 4 images.

I used the STSDAS task wfits to make a
standard FITS file of the image from the
planetary camera (I intend to deal with
the wide f... 		 
4029 1
By: valdes
09/27/2006 04:32PM
Normal Topic
display doesn't send WCS info to ds9?Started by:rbroberts, 09/26/2006 09:47PM
I have a FITS image with WCS information
in the header, but that information
doesn't seem to be transmitted to ds9.
If I used xpaset from the command-line,
ds9 gets all the information.

Is there some setting I need to get
display to send everything?

... 		 
3369 2
By: rbroberts
09/26/2006 09:47PM
Normal Topic
S-distortion correction for 2D longsl...Started by:siloubser, 09/25/2006 02:28PM
Hi

How can I correct 2D images for
S-distortion correction? I can trace the
apertures with apall but then you have
to extract 1D spectra for it to extract
along the traced aperture. What I want
to do is output a corrected 2D image (to
feed into a code... 		 
3150 1
By: valdes
09/25/2006 02:28PM
Normal Topic
scombine missing in 2.12.2a hydra and...Started by:massey, 09/19/2006 03:58AM
Hi, Mike, Frank, etc---

I'm having a very peculiar problem
running dohydra on my Mac. I can't
swear that I've done this before.
Anyway, everything seems fine until it I
do the sky rejection. Then I get an
error message saying it can't find
scombine.... 		 
3463 2
By: massey
09/19/2006 03:58AM
Normal Topic
imcombine crash with datacubes and of...Started by:callen, 09/18/2006 11:07PM
We have a user using NIFS generated data
cubes that reports this:

[quote:36f33522c0]The IRAF routine
imcombine will combine NIFS data cubes
that are not
shifted in Y (the second spatial
dimension); but hangs with any shift
in that dimension; e.g.... 		 
7814 8
By: fitz
09/18/2006 11:07PM
Normal Topic
astutil and artdataStarted by:dbrenner, 09/13/2006 03:23PM
What site should I use to download these
packages?

thanks 		 
5083 5
By: dbrenner
09/13/2006 03:23PM
Normal Topic
images.imutil.imstat fits a parabol...Started by:Guest, 09/12/2006 09:22PM
Hello,

Please help me be sure that I understand
how the mode
is derived by the images.imutil.imstat
task.

My read of the help file makes me think
that after
the final round of clipping, a histogram
is produced
and a parabolic curve is fit to the
hist... 		 
3130 2
By: edsmith
09/12/2006 09:22PM
Normal Topic
identify problems when run as Unix CL...Started by:dougmink, 09/07/2006 08:59PM
We're having strange interactivity
problems with identify when we run it
from
a CL script on the Unix command line.
All of the single-character cursor
commands work, except that 'm' doesn't
prompt for a wavelength. Rather,
it prompts and immediately r... 		 
4005 1
By: fitz
09/07/2006 08:59PM
Normal Topic
Question on order merging and standar...Started by:christip, 09/07/2006 01:42PM
Hi!

I've been trying a lot of time now to
achieve a uniform merging of orders in
echelle spectra. I have been using
scombine to do this. The output merged
spectrum has peaks or dips at the points
of merging of the orders. How can I
improve this?
Could ... 		 
2695 1
By: valdes
09/07/2006 01:42PM
Normal Topic
Running psfmeasure from command-lineStarted by:yl, 09/05/2006 08:11PM
Hello,
I am trying to get obsutil.psfmeasure
run from command-line, in a non
user-interactive, non-graphic mode.

form CL, for following works 'almost
well' - it prints to the screen the
output results, but also opens a graphic
Tektronix window (myXY.t... 		 
2804 1
By: valdes
09/05/2006 08:11PM
Normal Topic
How to create an artificial 2D image ...Started by:matilde, 09/05/2006 11:28AM
Dear Sirs,

I would like to create a 2D image for
which each line is a 1D image that
I already have.

I have search in 'artdata' but I have
not found the appropriate task.

Thank you very much.
Best wishes,
Matilde


 		 
2493 1
By: valdes
09/05/2006 11:28AM
Normal Topic
(Fwd) Spectral QuestionStarted by:Guest, 08/31/2006 09:09PM
Hello IRAF:

A question about wavelength scaling of a
echelle star spectrum 'xyz'. I have
identified all the thorium comparison
lines in 'thxyz' with IDENTIFY and
legendre order 6, and these
identifications have gone into
'database/idthxyz'.
Then, afte... 		 
2551 1
By: fitz
08/31/2006 09:09PM
Normal Topic
Question on a problem with IRAF Wavel...Started by:Guest, 08/31/2006 10:04AM
Hi,

I have encountered a problem while
reducing spectra with doecslit. The
problem appeared during the wavelength
calibration. This is the output at
that point.


ECREIDENTIFY: NOAO/IRAF V2.12.1-EXPORT
christip@dbs012 Wed 14:39:15
30-Aug-2006
Referenc... 		 
2215 1
By: valdes
08/31/2006 10:04AM
Normal Topic
DIFIMPHOT again.Started by:mairan, 08/28/2006 02:53PM
Hi.

I'd like to know whether someone knows
how to use the DIFIMPHOT package.

Cheers,
Mairan Teodoro 		 
2688 0
By: mairan
08/28/2006 02:53PM
Normal Topic
[Fwd: imcombine]Started by:Guest, 08/27/2006 12:31PM
I sent this email on June 19 but never
received any reply. In adition to
what stated at that time I must say that
when the average value of the
image is close to 0, so there are
positive and negative pixels, there is
no way to recover the result, as ... 		 
2725 1
By: fitz
08/27/2006 12:31PM
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