iraf.net

Welcome to iraf.net Thursday, April 25 2024 @ 03:12 PM GMT

Forum Index > Help Desk > Applications

New Topic

First | Previous | 1 2 3 4 5 6 7 | Next | Last

Topic Subject

Views

Replies

Last Post

saturated stars and DAOPHOT PEAK taskStarted by:vall, 05/22/2012 09:09AM
Hello.

I am puzzled by the behavior of the
DAOPHOT PEAK task. It seems that it
tries to fit stars that are saturated
and even measures their magnitudes. I
have set the saturation limit
("daopars.datamax") correctly. PHOT
gives INDEF for the saturated...

1799

By: vall

05/22/2012 09:09AM

New version of the Gemini IRAF packag...Started by:emma, 01/05/2012 05:14PM
A new version of the Gemini IRAF package
(v1.11) has been released.

The package is available for download
at:

[url]http://www.gemini.edu/sciops/data-and-results/processing-software[/url]

Please note that this version of the
Gemini IRAF package do...

1408

By: emma

01/05/2012 05:14PM

psf: Analytic function solution faile...Started by:ping, 08/12/2011 04:48PM
Hello,
I am running task
psf under daophot

For most of the images is runs fine.
But for a couple of images, it took
unusually long time and at the end it
failed, with a message:
"Analytic function solution failed to
converge"

What does it mean? How...

2089

By: ping

08/12/2011 04:48PM

pstselect ERROR: segmentation violationStarted by:ping, 08/11/2011 07:44PM
Hello,

I saw this old post:

> we seem to have a problem in some
of the Daophot routines
>for some time. Namely in the
routines "pstselect" and "psf" the error
>"segmentation violation" quite often
occurs, especially when using
>wildcards ...

1704

By: ping

08/11/2011 07:44PM

better than rspectext - no constant stepStarted by:rp, 06/29/2011 09:50AM
Hello everyone.

I have to pass from ascii (flux,
wavelenght) to fits for worknig in iraf
with this spectrum.

I am using rspectext.

The point is the step (difference
between one wavelenght and the next one)
is not fixed through the whole spectrum
we h...

1420

By: rp

06/29/2011 09:50AM

msctpeak and ds9 and OSXStarted by:long, 06/29/2011 12:26AM
I am having a problem with msctpeak (in
Iraf 2.14) and ds9 processing MiniMo
data from WYIN when I try to run this
from my Mac laptop (SnowLeopard).
MiniMo as you may recall produces file
with 4 extensions.

What happens when msctpeak starts is
that th...

1215

By: long

06/29/2011 12:26AM

how apall estimate the errors/sigmas?Started by:pascale, 04/22/2011 08:41PM
Dear all,

I would like to know, with details, how
apall estimate the errors it is
providing as the 4th extension of the
output spectrum.

Thank you for your help,

Pascale

1273

By: pascale

04/22/2011 08:41PM

DAOPHOT standalone to DAOPHOT/IRAFStarted by:jchavez, 04/05/2011 04:28PM
Hi,

I have run DAOPHOT, the stand-alone
version to get instrumental magnitudes.
I am now trying to calibrate the
standard stars as detailed in sections
3.6 to 3.10 of "A User's Guide to
Stellar CCD Photometry with IRAF".

I have created the imsets f...

1488

By: jchavez

04/05/2011 04:28PM

Ellipse cursor command in non-interac...Started by:jcmunoz, 03/09/2011 10:14PM
Hi,

I've just emailed this question to the
STS helpdesk, but I thought I would also
post it here as well, in case anyone can
help me.

Problem summary
-------------------------
ellipse doesn't seem to read the image
cursor command file when run
non-int...

2691

By: jcmunoz

03/09/2011 10:14PM

doslit weird bugStarted by:Draconix, 01/13/2011 02:25PM
Hello !

I am kinda new to IRAF but I found this
bug in doslit which I cannot solve
despite reading the entire help forum.
For reference, I am running IRAF
v2.15alpha on Fedora 12 running on the
school network. I was simply following
the tutorial on lon...

1444

By: Draconix

01/13/2011 02:25PM

Using external cut in a scriptStarted by:brentdutra, 12/06/2010 08:51PM
So I've run into a stumbling block with
the syntax that the iraf cl scripting
language uses. I've created a script
which takes in raw images and
coordinates as input and generates a
series of output images per my
specifications. The whole idea is such:
...

1599

By: brentdutra

12/06/2010 08:51PM

PSF Photometry Aperture correctionStarted by:AnTaR3s, 11/26/2010 07:30PM
Hi

I'm doing time series photometry on a
relatively dense open cluster which
makes PSF fitting necessary. When
computing the psf model and subtracting
the model, there are of course still
residuals present. In general brighter
stars have larger residua...

2142

By: AnTaR3s

11/26/2010 07:30PM

Help with DAOPHOT PSF PhotometryStarted by:AnTaR3s, 10/22/2010 09:07AM
Hi

I'm working on a project to identify
several stars via time series photometry
and in order to increase the reliability
of the photometric measurements I want
to apply PSF-Photometry.
I've already done aperture photometry
with daophot but now I can't...

1578

By: AnTaR3s

10/22/2010 09:07AM

display.frame.p_mode =Started by:Guest, 08/27/2010 02:47PM
Dear IRAF helpers,

i am running a very simple script that
display images, as they are read
one by one from an input file (see
script enclosed). For each new file
read at the display command, the script
prompts me for the display
frame. I did put dis...

1330

By: Guest

08/27/2010 02:47PM

mscrec/ccdproc & responseStarted by:fitz, 09/24/2010 03:55AM
Hello,

Apologies if I sent this to to wrong
address, anyway I didn't find any other
candidate address (after a quick search
in iraf.net).

Anyway, this post is about a bad
combination of
mscred.ccdproc &
twod.longslit.response
When reducing MEF-sp...

1510

By: fitz

09/24/2010 03:55AM

imarith overwrite WCS problemsStarted by:mzagursk, 08/19/2010 03:21AM
Hey all,

I'm having trouble keeping my WCS header
information intact when I overwrite an
extension of a fits file. I have the
following situation (where # is the
extension number):

[code:1:44d5b40805]> imar
image1.fits[#] / image2.fits
ima...

1754

By: mzagursk

08/19/2010 03:21AM

using msccmatch with different geomap...Started by:johannes1808, 08/12/2010 04:32PM
Hi,

I am working on MOSAIC data and I have
the problem, that when I want to get a
good wcs solution I always get an high
error for the rms when I am using
msccmatch. In order to get a better
solution I tried interactive fitting,
but I was not able to c...

2049

By: johannes1808

08/12/2010 04:32PM

Problems with daofindStarted by:GalacticKitten, 07/29/2010 03:43PM
I'm trying to find stars in a crowded
field, but regardless of what my
parameters are set to, daofind is
finding over 300,000 stars :shock:.
There should be at most 10,000. I've
tried changing (what I think are) the
relevant parameters, yet it still det...

1486

By: GalacticKitten

07/29/2010 03:43PM

No Love from Invertfit (Photcal) in C...Started by:mbriley, 07/23/2010 08:32PM
I should begin with the disclaimer that
I am for the most part, a
spectroscopist... But I have been
dabbling with some Stromgren Photometry
of late. Working through the process
with the noao.digiphot routines, all
goes well until the inverting of my
ins...

1440

By: mbriley

07/23/2010 08:32PM

how to normalizedStarted by:andreas, 07/03/2010 09:58AM
hi all,

i have couple of questions, and i don't
know how to do it,

1) I heard term "absolute flux
calibration" and "relative flux
calibration", what the difference? In
what package in IRAF that do these task?

2) I'm going to deconvolve star
spectrum...

2267

By: andreas

07/03/2010 09:58AM

Problem with `scombine' option `rejec...Started by:fschweizer, 07/01/2010 01:44AM
I am trying to use `scombine' in
`echelle' to combine the various
orders of a flux-calibrated MagE
spectrum in MS format into a
single 1D spectrum on a linear,
equidistant wavelength scale.

When I `scombine' the object or sky
orders with the following
...

1769

By: fschweizer

07/01/2010 01:44AM

Keck LRIS data reduction - 2006 (2)Started by:ash, 06/21/2010 08:17PM
Hi all again, I wrote a few months back
regarding some (red) Keck LRIS data that
I was reducing and some issues with the
dual amplifier and the routine WMKOLRIS.
In the time since I've been able to
figure out those issues and have
progressed through to...

1859

By: ash

06/21/2010 08:17PM

Dispcor helpStarted by:valdes, 04/28/2010 03:10PM
Hello Peter,

Use the slist task. You can select a
single aperture and pipe the output to
scan or you can dump the information
into a file and then a loop over each
line of the file.

For the SNR I assume you mean finding
the mean and rms of the conti...

1870

By: valdes

04/28/2010 03:10PM

can I perform psf of daophot on multi...Started by:china_108, 04/20/2010 12:28PM
When I perform psf of daophot on just
one image and I choose interactive
"yes", I can pick the psf stars by
myself but when I perform it on multiple
images and choose interactive "no", it
picks the 5 brightest psf stars
automatically from image.mag.1. W...

1912

By: china_108

04/20/2010 12:28PM

STA2 CCDRED translation fileStarted by:valdes, 03/22/2010 08:24PM
[b:796a6a58c8]From:
[/b:796a6a58c8]Beatrice Mueller
<mueller@psi.edu
([email]mueller@psi.edu[/email])>
[b:796a6a58c8]Date: [/b:796a6a58c8]March
20, 2010 11:13:04 AM MST

[b:796a6a58c8]To: [/b:796a6a58c8]Frank
Valdes <valdes@noao.edu
([email]val...

1538

By: valdes

03/22/2010 08:24PM

Problem with output from imcentroidStarted by:JanRap, 01/15/2010 08:26AM
Hi

I've been using imcentroid to generate a
list of centres for a number of sources.
I have repeated the process on a few
datasets without any problems. A typical
example of the code and output is:

[code:1:d5d3e180d6]
boyden> imcentroid > 'centr...

1990

By: JanRap

01/15/2010 08:26AM

Problem with the ccdproc in MSCRED pa...Started by:tolga, 12/29/2009 11:48PM
Hi,

I've been trying to analyze data using
the mscred package. Even though the
images are obtained with one CCD, the
readout is performed by 4 amplifiers and
images are written as 4 extensions into
a fits file. So mscred package is being
used.

After c...

1939

By: tolga

12/29/2009 11:48PM

apall not extracting multi-spectraStarted by:lwinter, 12/18/2009 11:35PM
Hello.

I am having a problem with the updated
version of iraf (12.1.1) where
apall appears to be extracting only the
source spectrum without the
sky or error. The resultant file from
apall is an ms.fits file,
generated with apall with the extras...

1796

By: lwinter

12/18/2009 11:35PM

Systematically growing daophot magnit...Started by:lmt, 10/27/2009 08:02PM
In daophot photometry of crowded fields,
during the iteration to remove neighbors
that blend PSF stars that cycles
psf-> nstar-> substar-> psf,
where the photometry input file to psf
is the substar output file with
unsubtracted PSF stars, nstar...

1831

By: lmt

10/27/2009 08:02PM

problem with "ccfind"Started by:nakisa, 10/02/2009 09:14AM
hello
I want use ccfind and then ccmap to do
astrometry with HST data. (according to
this recipe
http://iraf.noao.edu/irafnews/apr98/irafnews.14.html
).
I use GSC.1 which is the guide star
cataloge of HST observation.

and write
ccfind GCS1.txt n...

1543

By: nakisa

10/02/2009 09:14AM

First | Previous | 1 2 3 4 5 6 7 | Next | Last

	Normal Topic
	Sticky Topic
	Locked Topic

	New Post
	Sticky Topic W/ New Post
	Locked Topic W/ New Post

View Anonymous Posts

Anonymous users can post

Filtered HTML Allowed

Censored Content

dog allergies remedies cialis 20 mg chilblain remedies

Search

Forum Menu

User Functions

Topics