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Incorrect behavior of continuum (sfit...Started by:esemenko, 04/10/2013 09:13PM
Hello everyone!
I was using spectool and task continuum
itself for fitting of spectrum continua.
I had a good and robust result with 32
bit iraf v2.14. Now I have two different
installations of IRAF (macintel and
linux 64) and both of them show
differen...

1445

By: esemenko

04/10/2013 09:13PM

problem getting implot to accept mult...Started by:scarcity, 02/03/2010 12:08PM
Hi,

I have a new install of IRAF 2.12 on
OpenSUSE 11.2. Everything seems to be
working fine, except that I can't get
implot to accept multiple files.

e.g.
ecl > implot file1.fit
works fine, as expected.

ecl > implot @filelist
ERROR: Cannot open...

1449

By: scarcity

02/03/2010 12:08PM

Image resample / software binningStarted by:Santiago, 08/18/2015 10:38PM
Hi, i'm trying to resample images to
half size in a way that 4 pixels sum to
1. This is software binninb 2x2 images.
Is MAGNIFY the correcto way to get this
done? i have interpolation set to linear
and factor to 0.5, will this sum 4
pixels into 1? If no...

1450

By: fitz

08/18/2015 10:42PM

scombine of different aperaturesStarted by:massey, 06/15/2009 05:46PM
I have various "ms" images that contain
multiple apertures all of the same
object,
and I'd now like to scombine them. But,
scombine is very keen to do the
combining aperture by aperture. How do
I get around this?

In other words, I'd like to run scomb...

1454

By: massey

06/15/2009 05:46PM

tektronix problemStarted by:chris75, 03/22/2009 09:33AM
Hi,
I have a fedora 10 64bit laptop (dell
xps m1330).
I installed iraf but I have a problem:
when I use i.e. imexamine or qphot,
stdgraph doesn't open.
when I call stdgraph anole it opens.
Can someone help me? Maybe it is some
stupid problem, because I ...

1454

By: fitz

03/22/2009 09:33AM

Problem with APALLStarted by:fitz, 04/27/2009 04:13PM
Hello,
I see that you are a iraf guru so you
can probably help me with the following
apall (aptrace) problem.

Essentially, I cannot get a *perfect*
alignment of the lines along the
dispersion axis with the aperture
aperture based on the trace informati...

1455

By: valdes

04/27/2009 04:13PM

image automatically trimmed after pro...Started by:china_108, 11/22/2008 02:41PM
I use a 1340 x 1300 ccd camera to take
images but after proccessing, the image
displayed in ds9 becomes a 512 x 512
one, not the original 1340 x 1300 one.
I know the problem lies in the header
file. For all those fit images, I added
these info to the he...

1455

By: fitz

11/22/2008 02:41PM

msccmatch at noao 950 N Cherry itselfStarted by:Edward Olszewski, 12/21/2010 04:02AM
Frank and Mike,
I'm using Abi Saha's console MAC
computer to run msccmatch (and other
things)
on several nights of Mosaic2 data. I'm
running into a couple of related
problems.
First, in mscgetcatalog, using the
default NOAO:USNO-A2, there are no
stored ...

1461

By: valdes

12/21/2010 04:02AM

RMS value seem strange in telluricStarted by:fitz, 07/29/2016 03:33PM
[color=red][Moderator's Note: Posted
from submitted story on behalf of
user.][/color]

I am analyzing high-resolution
near-infrared spectra retrived with our
original spectrograph WINERED installed
on a 1.3-m telescope at Kyoto Sangyo
University.

...

1462

By: valdes

04/25/2017 10:22PM

Problem with installing aredStarted by:baryonicminority, 06/19/2009 10:03PM
Hi everyone,

I'd like to run
[b:2a1098af85]quadproc[/b:2a1098af85]
for reducing data from the 0.9-meter at
Cerro Tololo, and to do that I need to
install
[b:2a1098af85]ared[/b:2a1098af85]. I'm
working on an Ubuntu 8.10 (intrepid) box
and I'm following...

1462

By: fitz

06/19/2009 10:03PM

problems with IRAF 2.15 using DOSLITStarted by:uhiller, 03/23/2011 03:59PM
Hi,

the task doslit (in noao.imred.specred)
in iraf 2.15a does not work anymore.
It's supposed to give me an interactive
window to select the aperture to extract
the spectrum for.

doslit only updates the file with adding
a "CCDPROC" keyword (that's no...

1467

By: fitz

03/23/2011 03:59PM

Reidentify with two reference imagesStarted by:mshea, 02/07/2023 10:03PM
Hi all,
Is there a way to use two reference
images in reidentify?

I currently have two comparison lamps,
Neon and Krypton. Neon calibrates the
data well in the red but does poorly in
the blue, while Krypton is the opposite.
Due to differences in e...

1469

By: valdes

02/09/2023 05:18PM

The task BVCORR is not workingStarted by:fitz, 06/18/2015 09:06PM
[color=red][Moderator's Note: Forwarded
from Story submission][/color]

I have the version 2.7.8 of RVSAO
installed (November 2009)

I can't edit nor see the parameters of
the task BCVCORR (a task included in
RVSAO to correct radial velocities)
and...

1472

By: fitz

06/18/2015 09:40PM

Is there a task?Started by:dbrenner, 10/01/2009 06:33PM
I have a two dimensional image; it is 3
pixels x 25 pixels. I want to decompose
it into a sum of 23, overlapping, known
3x3 images. Or conversely, I want to
combine 23 3x3 images to make a specific
3x25 image. Is there a task, maybe in a
spectral pac...

1476

By: dbrenner

10/01/2009 06:33PM

outputs from 64 bit imtranspose are s...Started by:mo0713, 02/28/2012 10:28PM
When I use 64-bit IRAF 2.15.1a,
imtranspose returns very strange output.
The problem does not happen with IRAF
2.14.1 and 32-bit IRAF 2.15.1a.

I'm using IRAF mainly with pyraf on Mac
OS X 10.7.3.

I've uploaded the outputs on
ftp://iraf.noao.edu/pub/...

1477

By: mo0713

02/28/2012 10:28PM

rvsao 2.8.1 problem in Mac OS XStarted by:chewbacca, 08/05/2014 01:06AM
I have the newest iraf 2.16.1 in Mac OS
X and rvsao 2.8.1 (installed through
'make rvsao' in /extern local folder).

When I run the command xcsao, I get the
error

ERROR: MWCS: coordinate system not
defined (logical)

Both the input spectrum and ...

1481

By: chewbacca

08/16/2014 12:10AM

Problem with apall - visualisationStarted by:Mico, 08/19/2009 08:37PM
Hi.
I am totally new in Iraf. I run it in
Cygwin. But when I tried to run apall
comamnd, window with graph does not open
and get this error
message:[url=http://www.shrani.si/?p/tC/1ImevW1G/error.jpg][img:735e23a169]http://www.shrani.si/t/p/tC/1ImevW1G/e...

1482

By: fitz

08/19/2009 08:37PM

Problem with apphotStarted by:Guest, 07/17/2009 11:34AM
Sir,
I got some problem in reducing the data
with package apphot. I have been trying
to use both qphot and phot task within
apphot but some warning message came
like below----
[b:a17f269814]Warning: Graphics overlay
not available for display device.[/...

1482

By: Guest

07/17/2009 11:34AM

quotation marks in axis labelsStarted by:rfinger, 01/29/2009 02:01AM
I'm trying to figure out how to get a
quotation mark (i.e. the arcsecond
symbol) into an axis label (using the
IGI X|YLABEL command). Help would be
very much appreciated.

1482

By: fitz

01/29/2009 02:01AM

Floating point overflow in continuumStarted by:sdb210, 10/14/2010 02:59AM
I'm using continuum to fit out the blaze
function in some echelle spectra. When
switching between certain apertures, the
task will crash and throw a floating
point overflow error. For some reason
my red chip data tends to go farther
before crashing (f...

1483

By: fitz

10/14/2010 02:59AM

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

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

Rv Offset, possibly owing to no Flat/...Started by:dm, 03/15/2009 02:29PM
Hi Folks, I have successfully tested
both the FXCor and RVIDLINES with
spectra available online, and I have
been able to confirm that the protocol I
am following yields consistent results
with those found in the literature.
However, when it comes to my...

1497

By: valdes

03/15/2009 02:29PM

Y2k bug in astcalc()Started by:jstottsj, 04/05/2010 10:14PM
I stumbled across this while trying to
add ST and AIRMASS headers to some old
data. astcalc() seems to be
mis-handling two-digit years.

Suppose I have a command file for
astcalc() like this:
[code:1:4a5ad7ba68]
# Only difference is the date string
pas...

1499

By: jstottsj

04/05/2010 10:14PM

ERROR: MWCS: dimension mismatch (mw_o...Started by:ongole.geeth, 07/18/2016 11:08AM
Im trying to use the task : splot under
specred in imred in IRAF Revision 2.16.1
on IUE data downloaded from MAST archive
of STScI.When I try to open those
spectrums with splot it gives me a error
saying

specred> splot lwr06483mxlo_vo.fits
ERROR: ...

1504

By: fitz

07/22/2016 05:40PM

Apscatter for long-slit spectroscopyStarted by:jchavez, 01/28/2011 08:03PM
Hi,

I would like to subtract scattered light
across the dispersion (not necessarily
[i:79ec690410]along[/i:79ec690410] the
disperson, although that wouldn't hurt).
I have 3 stars in the slit. When I
extracted the spectra, I got 3
apertures.

I'm tr...

1506

By: valdes

01/28/2011 08:03PM

QUERY REGAARDING HOW TO PLOT AZIMUTHA...Started by:bijusaha, 08/04/2023 12:48PM
I have used the ELLIPSE task to obtain
the radial variation of intensity for a
galaxy but that is averaged over
azimuthal angle for each ellipse defined
by some semi major axis. How to extract
the how to obtain the variation of
intensity with azimuthal ...

1507

By: bijusaha

08/04/2023 12:48PM

autoidenify does not auto find featur...Started by:holt, 06/25/2009 03:34AM
Hi,

I am trying to have autoidentify run
automatically for our tests. There are
four features in my arc and I provided a
coordlist with wavelengths of said four
features. Initially autoidentify does
not find a solution; however, in
interactive mode, a...

1507

By: valdes

06/25/2009 03:34AM

Help with very simple scripting problemStarted by:Gaba_p, 04/07/2009 06:32PM
Hi,

I'm trying to do something very simple,
but I can't figure out how to. I have a
file like this:

text1
text2
text3
...
textx

and I need to create a file like this:

text1 text2 text3 ... textx

Thanks for any help!

1508

By: fitz

04/07/2009 06:32PM

ds9 'illegal instruction: 4'Started by:mstribitaka, 09/19/2014 03:17PM
ds9 suddenly stopped opening for me, it
was coming up with some 'conflict'
error. So I decided to re-install both
IRAF and ds9 to see if that fixed the
problem. It didn't.

When I type 'ds9' at an xgterm prompt
(via X11) it says:
'Illegal instru...

1509

By: mstribitaka

01/23/2015 05:39PM

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