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Unresolved point sources with gallistStarted by:rachanab, 07/07/2017 11:26AM
I am making fake sources for my
completeness simulations and I am using
gallist + mkobjects to do this. I can
get a distribution for my sources using
parameters like x and y coordinates,
magnitudes, profile types, half-flux
radii, axial ratios, position...

1125

By: rachanab

07/07/2017 11:26AM

Resetting CRVAL1 after scopyStarted by:stockton, 02/09/2013 01:26AM
scopy retains the original value of
CRVAL1 after extracting a subregion of a
spectrum, providing a pixel offset
(CRPIX1) to compensate for the
wavelength difference. I need to feed
these spectra into an application that
depends on having a value of CRVA...

1126

By: stockton

02/09/2013 01:26AM

iraf error messageStarted by:fitz, 10/20/2009 12:04AM
Blank 132071

1132

By: fitz

10/20/2009 12:04AM

APPHOT Bug under PyrafStarted by:fitz, 05/12/2014 04:22PM

[color=red][Moderator's Note: Forwarded
from story posting][/color]

qphot outputs an invalid floating-point
number (such as "-299866.375-58") when
the coordinates of the object to be
measured fall considerably off (>= ~100
degrees) the FITS ima...

1134

By: iaa

05/22/2014 02:15PM

Deblending with splot using input fil...Started by:chewbacca, 07/24/2014 09:06PM
Hi,

If I want to use a file to specify
wavelengths, widths, fluxes etc for the
lines I am trying to fit with the
deblending 'd' routine in splot, in what
order should I list the information in
the file e.g.

wavelength1 flux1 g fwhm1 eqw1 ...
wav...

1137

By: chewbacca

07/25/2014 08:06PM

Wavelength units on NIR spectraStarted by:massey, 04/10/2017 09:58PM
I have some NIR spectra taken with FIRE
on Magellan that I reduced with their
IDL pipeline. When I splot the spectra,
they look fine, and the units on the X
axis are Angstroms--all well and good!
But, when I wspect the spectra to a text
file, the uni-...

1139

By: valdes

04/25/2017 10:14PM

multicolor gkimosaic?Started by:Gordon, 05/03/2010 04:54PM
A journal referee has asked me to revise
a mosaic plot produced using gkimosaic
so that selected plots within it are in
different colors. Can this be done? If
it is actually or nearly impossible I'll
be happy to say so to the referee.

1143

By: fitz

05/03/2010 04:54PM

Imsurfit scriptingStarted by:spacermase, 03/07/2010 02:40AM
Hello all,

So, this is probably a very simple
mistake I'm making, but I haven't been
able to figure out what it is.

I'm writing a script that involves
imsurfit. The relevant part of the
script is as follows:

imsurfit ("@input.list", "@fitted.list",
1...

1149

By: fitz

03/07/2010 02:40AM

Fringing problem and b_niter paramete...Started by:uros, 08/29/2017 05:45AM
Hi,

I am working with low S/N spectra.
Because of this I am trying to minimise
influence of the fringing. Did exist
some specific way how to deal with my
flat fields to remove effect of the
fringing on my data?
At this moment for flat fielding I am
...

1153

By: uros

08/29/2017 05:45AM

tiltpars (fortran executable in iraf)Started by:ebubar, 09/14/2010 05:36PM
I wonder if anyone can help with this.
I am reducing some MIKE echelle spectra
using the mike_tools packages. I've
reached the point where I am correcting
for the tilt of the slit using a fortran
program called tiltpars. It is
compliled and I have li...

1155

By: ebubar

09/14/2010 05:36PM

how are poisson corrections calculate...Started by:eduardodelpeloso, 07/12/2010 12:21AM
Hi everyone!

I am trying to understand how the
sigclip algorithm in the
noao.onedspec.scombine task works,
because I am trying to implement it in
C.

If I understood it correctly, it works
more or less the following way:

0) Scale all spectra to a com...

1157

By: valdes

07/12/2010 12:21AM

hselect bug...!?Started by:AnTaR3s, 02/15/2011 05:10PM
Hi

I just wanted to sort my CCD data by
filter, with an old script.
It uses lines like this:

hselect *.fits $I "FILTER='B'"

which prints only the names of the
Images where the keyword FILTER equals
B.
This works on my Ubuntu 32bit Machine
(IRAF v2.15...

1158

By: fitz

02/15/2011 05:10PM

WHT LIRIS Data Reduction PacakgeStarted by:kirankumar, 09/15/2015 03:07PM
Hi,

Did anyone use the LIRIS data reduction
package?

Regards,
Kiran

1160

By: fitz

09/17/2015 07:10PM

GEOMAP/GEOTRANStarted by:zech2453, 08/07/2018 10:20PM
Hi I've been trying to run
geomap/geotran on some of my distorted
images but I cannot seem to find the
right fit. What I've done:

1. Generated a coordinates list of xin
yin xref yref
2. Fed said list into geomap
3. Use geomap outputs and fed into g...

1174

By: zech2453

08/07/2018 10:20PM

Task AsttimeStarted by:astro, 02/10/2016 10:49PM
Hi,

I'm using astutil.asttime to calculate
epoch and julian day of my data from the
local dates and times. I got the results
in the form
EPOCH JD LMST
1987.82398 2447097.7083 0:01:35.8
I need more digits after the decimal
point f...

1179

By: fitz

02/11/2016 06:38AM

Possible to set rimexam radius value ...Started by:psymon104d, 12/17/2014 02:11PM
I am analysing faint X-ray sources from
Chandra data using imexamine and
specifying the aperture radius from
within the rimexam parameters.

>epar rimexam

I have coordinates for all my sources
and I have the corrected aperture radii.
I need a spec...

1185

By: psymon104d

12/18/2014 04:24PM

imarith floating point invalid operationStarted by:GalacticKitten, 09/10/2010 08:14AM
I'm getting this error when I try to run
imarith on a set of 2min exposures I
have. The odd thing is that it works
fine for both 30sec and 60sec exposure
times of the same night.
I am trying to subtract the dark from
the light, and it comes up
ERROR: ...

1191

By: fitz

09/10/2010 08:14AM

iraf error messageStarted by:fitz, 10/20/2009 12:05AM
Blank 132072

1195

By: fitz

10/20/2009 12:05AM

ModellingStarted by:Sparkles, 09/30/2010 04:44PM
Hi guys,

I'm trying to use splot to model some
double peaked spectra. there is really
not much info on this stuff. I've tried
using the d key to set the continuum
level and fit a Lorentzian function to
one of the two peaks. Is there any way
of telling...

1208

By: fitz

09/30/2010 04:44PM

ccdproc removing objects?Started by:spacermase, 07/14/2010 03:45PM
Hello all,

I'm hoping that is the result of a
simple mistake I'm making, but I've been
running ccdproc on a batch of images I
acquired. I created the flat and bias
images using standard protocol, and they
look normal. However, when I actually
run ccd...

1209

By: valdes

07/14/2010 03:45PM

Combining apertures with scombineStarted by:colinn, 04/24/2014 06:46AM
Hi
I'm trying to combine the orders from an
echelle spectrum that have been
separated into individual files using
scopy into one long spectrum so I can
see the overall shape.
I am using scombine.
My input file is
@inscombine1252_bt14long.lis, this co...

1213

By: valdes

05/12/2014 09:08PM

negative magnitude in PHOTStarted by:nakisa, 11/15/2010 10:45PM
Hi, I have two questions about PHOT.
First , I am doing photometry on some
stars in M31. PHOT gave me -23 . I don't
know where this minus comes from!
second, how can I get error bar on the
magnitude value with PHOT?
Best,Nakisa

1213

By: fitz

11/15/2010 10:45PM

installing MIKE-mtools package on ubuntuStarted by:fitz, 06/16/2017 03:28PM
[color=red][Moderator's Note: Forwarded
from story submission][/color]

Hi,
I am trying to install the iraf mtools
package (designed by Jack Baldwin for
the reduction of Magellan MIKE spectra)
on a Dell laptop running ubuntu 14.04.
I followed Phil ...

1214

By: fitz

06/16/2017 03:28PM

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

SAOImage DS9 version 7.4 is now avail...Started by:joye, 12/21/2015 09:08PM
SAOImage DS9 version 7.4 is now
available for download at
http://ds9.si.edu/site/Download.html .
New features include Blocking, 3D Axes
Reorder, and Performance Improvements.

1219

By: joye

12/21/2015 09:08PM

Problem using the RVSAO tasksStarted by:juanespejo0313, 08/02/2015 08:56PM
Hi, I have the 2.16 version of IRAF and
the version 2.8.1 of RVSAO installed. (I
use linux 64 bits)

All the tasks in IRAF are working
properly except for the RVSAO tasks,
when even I try to use them, I get the
following error message:

ERROR: Canno...

1221

By: fitz

08/03/2015 08:04PM

Problems with Standard and Calibrate ...Started by:Marckelson, 11/20/2015 06:58PM
Hi there,

I'm actually working on xshooter
long-slit and ifu data. Regarding to
long-slit, everything is done by the
pipeline provided by ESO, but ifu data
is just reduced, ESO doesn't provide a
recipe to perform the ifu flux
calibration so I thought...

1227

By: Marckelson

11/20/2015 06:58PM

composite spectrumStarted by:uros, 06/07/2017 08:13AM
Hi :)

first sorry if this question already has
been asked, I try to find did someone
ask this before but without success.

I am trying to create composite 1D
galaxy spectrum from 4 single 1D spectra
(different galaxies).
I know how to shift all sp...

1230

By: fitz

06/08/2017 01:53PM

AMPLIST 22Started by:cosmologist, 01/20/2010 08:15PM
I have some data from CTIO with AMPLIST
22

But some of them are AMPLIST 22 OG 530
and the others AMPLIST GG 495.
Does anyone know the difference between
these 2?

Thanks!

1239

By: fitz

01/20/2010 08:15PM

Guiapps errorStarted by:weaverwb, 08/02/2010 09:01PM
Hi,

Following the instructions to install
guiapps, only the demo runs smoothly,
when attempting to run any of the other
tasks an error appears that reads

dynamic-link.h:62: elf_get_dynamic_info:
Assertion '! "bad dynamic tag" ' failed.
ERROR: abort

...

1241

By: weaverwb

08/02/2010 09:01PM

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