iraf.net

Welcome to iraf.net Thursday, May 02 2024 @ 01:23 PM GMT

Forum Index > Help Desk > Applications

New Topic

First | Previous | 5 6 7 8 9 10 11 | Next | Last

Topic Subject

Views

Replies

Last Post

Spectra extraction artifactsStarted by:schenk, 02/14/2008 06:22PM
Hi all,

I've been having some problems with
extracting some spectra lately and I'm
looking for some help. Whenever I
attempt to extract the spectra from the
reduced data, I end up getting strange
artifacts in many of them. Mostly,
these tend to make ...

1976

By: valdes

02/14/2008 06:22PM

spectraStarted by:valdes, 03/23/2006 04:02PM
[quote:1c7f7205aa][b:1c7f7205aa]From:
[/b:1c7f7205aa]"Janaka Adassuriya"
<adassuriya@accmt.ac.lk
([email]adassuriya@accmt.ac.lk[/email])>
[b:1c7f7205aa]Date: [/b:1c7f7205aa]March
21, 2006 5:50:20 AM MST
[b:1c7f7205aa]To: [/b:1c7f7205aa]"Frank
Vald...

3098

By: valdes

03/23/2006 04:02PM

Spectool: Equivalent Width measuremen...Started by:keflavich, 03/31/2006 01:40AM
I've been trying to compare a few
spectra of the same object taken on
different observing nights to see if sky
subtractions varied and how they were
affected by the sensitivity functions
(they're at different wavelengths, so
they behave differently at t...

5377

By: sirmarcos

03/31/2006 01:40AM

spectool.gui errorStarted by:azastro, 04/29/2007 05:10PM
Hi all.

I use iraf on Linux/FedoraCore2. I start
[b:f5e254554f]xgterm[/b:f5e254554f]
and then
[b:f5e254554f]pyraf[/b:f5e254554f]. When
I try start
[b:f5e254554f]spectool[/b:f5e254554f]
this application
is crashed with error:
--> spectool o1.fits
...

3424

By: azastro

04/29/2007 05:10PM

Spectool numbs to keystrokes and xgte...Started by:sirmarcos, 05/24/2006 06:38PM
So, on MacOS X running Tiger and xgterm,
there is a reproducible problem I'm
having with spectool.

I load up a spectrum. I use the
"continuum fit spectra by curve fitting
of spectra" or whatever the words are,
which works. I then normalize the
spectr...

3108

By: valdes

05/24/2006 06:38PM

spectool errorStarted by:Reba, 03/10/2008 06:00PM
Hi all,

I am new to guiapps, and I am getting an
error with spectool that I do not know
how to repair. When I attempt to run the
tutorial (so that I can learn how to use
the program) I get the following error
in spectool:

x_spectool.e: dynamic-link.h:...

2541

By: Reba

03/10/2008 06:00PM

specshift, scombine, etcStarted by:esemenko, 04/03/2007 04:48PM
Hello IRAF users!
I have three questions about spectra
processing and related applications.

First question is about tasks which
allow to perform calculation of shift of
two spectra using cross-correlation or
another method. I would like to compare
two ...

4526

By: esemenko

04/03/2007 04:48PM

specred packageStarted by:Guest, 05/24/2006 06:17PM
I am trying to do a multi-fiber
spectroscopic reduction using the
specred package. I am using a 293
fiber system and there is moderate
curvature of the spectral lines. I am
encountering a problem when
re-identifying spectral lines from my
first arc ...

2701

By: valdes

05/24/2006 06:17PM

Specplot No Spectra definedStarted by:raulepuebla, 03/31/2011 01:31AM
Hi!

I just installed the last version 2.15
for linux64. I tried to use the specplot
task, but the screen says: "No defined
spectra". I already tried installing
from binary and from source files, but
the results is the same.

Splot runs ok! shows the sp...

3905

By: fitz

03/31/2011 01:31AM

specifying wavelength ranges for fxcorStarted by:massey, 01/14/2008 07:41PM
Hi, Mike et al---

I'm using fxcor for the first time in a
couple of years, and need to remind
myself how to specify the wavelength
range for my program objects and
standard velocity templates. The data
are dispersion corrected, of course. I
want
to r...

2262

By: fitz

01/14/2008 07:41PM

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

Solution for dispcor having no effectStarted by:LMCBoy, 11/22/2006 10:05PM
Hello,

Just wanted to post a non-obvious
solution to a dispcor problem I had
recently. I was having trouble gettijng
dispcor to do anything to my spectra.
It would run without error, and set the
DCLOG keyword properly, but would not
apply any wavelen...

3102

By: LMCBoy

11/22/2006 10:05PM

software problemStarted by:Guest, 11/04/2005 07:47PM
Hello Claudia,

The situation gets a little confused
because of different versions of
XImtool and DS9 that people use. The
cursor readback depends on
certain behaviors of the display
servers. It is likely you are using
DS9 which does not correct...

4092

By: fitz

11/04/2005 07:47PM

software problemStarted by:Guest, 10/28/2005 06:21PM
We are having a problem using the
package msczero and we
are not able to find the solution.

When we start msczero, it loads our
image, but when we try
to do anything on the image (like
pressing x), we get the
message:

the cursor is not in an image

Do...

2576

By: Guest

10/28/2005 06:21PM

Soar Optical Imager mosaicingStarted by:Guest, 10/13/2005 09:50PM
[b:0e9e7fbc8e]From:
[/b:0e9e7fbc8e]Eduardo Cypriano
<cypriano@ctiosz.ctio.noao.edu
([email]cypriano@ctiosz.ctio.noao.edu[/email])>[b:0e9e7fbc8e]Date:
[/b:0e9e7fbc8e]September 28, 2005
11:44:01 AM MST
[b:0e9e7fbc8e]To: [/b:0e9e7fbc8e]Frank
Valdes &...

2834

By: Guest

10/13/2005 09:50PM

SNOOPYStarted by:patB, 07/18/2007 07:03PM
I am having trouble tracking down the
SNOOPY external psf package from Padova,
does anyone know how I can get in
contact with the developers? thanks in
advance.

2715

By: fitz

07/18/2007 07:03PM

small correlation height of fxcorStarted by:vega, 02/11/2011 07:16AM
Hi Fitz,

I'm Vega. My currently work is to
measure the radial velocity of variable
stars. I found that fxcor task has been
widely used to measure the 'rv' of
celestial objects. The objects that I
working on are the stars which have
emission lines like ...

2583

By: vega

02/11/2011 07:16AM

skyline removal using apallStarted by:ac, 05/24/2008 08:14PM
I was wondering how to subtract the
skylines from my image. I have vertical
skylines across the entire field, and my
object line runs horizontal. I used
apall to define an aperture across the
image, and then defined my background,
but it did not remove ...

3610

By: valdes

05/24/2008 08:14PM

sky subtructionStarted by:ebru, 08/26/2008 07:55AM
I study SNRs and I want to learn how sky
subtruction is performed on a
spectroscopic data since diffuse ISM is
known to produce a spectrum which is
quite similar to that of SNR, and the
therefore contribution of such diffise
emission needs to be proper...

1556

By: valdes

08/26/2008 07:55AM

Sky subtraction problem in dohydraStarted by:paco, 04/23/2009 11:00PM
Hi folks,
I am trying to reduce some CTIO Hydra
data--the first time at this for me.
I'm able to run DOHYDRA just fine up
until it tries to pull out the sky
fibers and combine them to form a sky
spectrum. It does not find any, and
fails with the outp...

2199

By: valdes

04/23/2009 11:00PM

Sky Subtraction (fwd)Started by:fitz, 07/21/2009 03:17PM
Hi all, sorry I have a problem with sky
subtraction of 1D extracted wavelength
calibrated spectra. Since sky spectrum
is shifted with respect to the science
objects, how can I apply sky subtraction
with skytweak? can anybody help me?
thanks a lot

[colo...

1949

By: valdes

07/21/2009 03:17PM

Sky flatsStarted by:cosmologist, 03/01/2011 01:30AM
In the manual I am following it says
that skyflats when combined should be
scaled by "mode", but my skyflats have
different exposure times, can I scale
them by exposure time instead? (both
exposure time AND mode are different how
do I deal with such a c...

4068

By: dschumac

03/01/2011 01:30AM

Size of output frame after GEOMAP/GEO...Started by:aoxsic, 02/17/2009 04:59PM
Dear IRAF experts,

How is the size of the output
transformed image calculated when using
GEOMAP/GEOTRAN to align?

I have 2 images, the reference is (5951
x 5992), the image to be aligned is
(2011 x 1970).

lapr GEOMAP:
input = "nd200031.xymatc...

2689

By: aoxsic

02/17/2009 04:59PM

simultaneous graphic and text windows...Started by:hartigan, 12/24/2008 01:51AM
Does anyone know how to get xgterm to
open simultaneously displaying both
the graphics and text windows? I can get
the configuration I want by opening
an xgterm, and ctl-rightbutton to get
menu, and check Show Graphics Window,
but I want to set the reso...

2026

By: hartigan

12/24/2008 01:51AM

simultaneous fit to multiple arclampsStarted by:lucy1023, 05/24/2015 10:44PM
Is there a way to get IRAF to fit
multiple different arclamps
simultaneously, without adding the
arclamps together (which would lead to
some blending)? e.g., say I'd like
Identify to find all the features in a
HgNe lamp, then separately find all the
fea...

767

By: lucy1023

05/24/2015 11:19PM

Silent APALLStarted by:gzhou, 03/01/2011 04:35AM
Hi,

I'm trying to write a pyraf script for
apall. I have interactive and review
turned off when running apall via the
script, but can't find a way to remove
the prompt

Number of apertures to be found
automatically (1):

even though I set the aperture...

1644

By: gzhou

03/01/2011 04:35AM

sigma spectra in spectoolStarted by:phil, 11/17/2005 06:29PM
Hi Achim,

I apologize for the delayed reply.

On Fri, 04 Nov 2005 16:50:28 -0800
tappe@ipac.caltech.edu wrote:

> Hi Phil,
>
> great, the method described below
works for me. There is one
> remaining problem that I have with
spectool, and...

3081

By: phil

11/17/2005 06:29PM

sigma spectra in spectoolStarted by:Guest, 10/11/2005 03:46PM
On Tue, 04 Oct 2005 17:16:00 -0700 Achim
wrote:

> Hi Phillip,
>
> I am using SPECTOOL to fit Gaussian
line profiles and would like to
> use the error estimation function.
However, I have difficulties
> assigning a sigma spectrum to th...

5237

By: Guest

10/11/2005 03:46PM

Shifting region of interest in splotStarted by:tomph, 05/02/2008 10:30PM
Hi all
I am working with splot examining
spectra, after flux calibration there is
a region (sub 4500 Angstroms) where the
data is flawed (due to division using
sarith), this I wish to remve or ignore.

I need to take a continuum from the
spectra so what...

2344

By: tomph

05/02/2008 10:30PM

shift and magnifyStarted by:dbrenner, 02/13/2009 08:16PM
I want to shift and then demagnify an
image. The final size should be the same
size as the original and the final
center should be the same center as in
the shifted image.

Any help would be appreciated.

Thanks.

3322

By: dbrenner

02/13/2009 08:16PM

First | Previous | 5 6 7 8 9 10 11 | 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