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Last Post

mscred + mkmsc + ccdprocStarted by:kanaan, 06/22/2016 09:11PM
(sorry if this is a double post, I tried
locating it to add a reply note and
can't find it, so here it goes
(again?))

hi Folks,

I have one chip, 16 amplifiers images.
I managed to define sections correctly.
CCDSEC, DATASEC, BIASSEC, DETSEC

I ...

923

By: kanaan

06/22/2016 09:15PM

ELLIPSE error : Error in 1st and 2nd...Started by:michgradstudent, 06/20/2016 05:44PM
Hello!

IRAF newbie here. I'm modeling galaxies
with IRAF's ellipse package.
The past two galaxies I've looked at
seem to be causing IRAF some confusion.

First, it can't find the center of the
galaxy from the parameters I give it in
Geompar as i...

1105

By: fitz

06/22/2016 03:58AM

SPLOT overwrite problemStarted by:mafsar, 05/18/2016 08:15PM
Hi,
I have a problem with SPLOT task. When I
tried to do some work using splot I
realized
something has changed. I used splot's
continuum normalization
option for an echelle spectrum. When I
wanted to overwrite the changes that I
made in each order ...

1307

By: valdes

05/27/2016 06:25PM

missing parameter 'dataless' in mscre...Started by:paco, 05/08/2016 07:46PM
Hi,

I'm trying to process some data from
Magellan IMACS, which was originally in
the form of 8 individual files for each
of 8 chips. I've assembled these into
MEF files. But now when I try to
operate on these using mscred, I get
errors that look l...

991

By: paco

05/08/2016 09:43PM

Fits to pixel-counts tableStarted by:Albireo987, 03/31/2016 10:40PM
Hello,

I want to convert a .fits image to a
table with the pixel coordinates in ccd
and for every pixel the counts value.
Can you please suggest me which package
and task is most suitable for this and
how?

Thank you in advance

983

By: fitz

04/02/2016 01:30PM

Geotran IssueStarted by:constant, 02/20/2016 03:39PM
Hi, All

I am using geomap and geotran to align
two images. The xshift and yshift which
obtained by geomap is less than 1 pixel.
But when I transform one of images to
match another, there is a shift which is
much larger than 1pixel in the resultant
im...

1333

By: constant

02/23/2016 08:14AM

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

QP file truncatedStarted by:fitz, 01/25/2016 10:16PM
[color=red][Moderator's Note: Forward
from story submission on behalf of
user][/color]

After executing xray/xdataio/rarc2pros
transformed fits file into qpe is not
good. The message is FMIO file
truncated.

1034

By: joe

01/27/2016 08:06PM

IDENTIFY problemStarted by:fitz, 01/25/2016 02:12AM
[color=red][Moderator's Note: Forwarded
from story submission on behalf of
user][/color]

I have same problem as in help log 35,
my cl script is not running for identify
task , I wrote a simple cl script but it
is not adding wavelength value on
pres...

1093

By: sapna

01/26/2016 04:47PM

convert FITS file to ASCII table with...Started by:iraf_astro, 12/27/2015 08:16PM
Hi,

I have searched through IRAF to find out
a routine which would list out all the
pixels and the counts associated with
them for a fits image, but I could not
find anything. I would like to compare
my model image (with WCS coordinates) to
a real im...

2230

By: fitz

12/27/2015 10:08PM

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

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

Installation of ds9 on IRAFStarted by:Medinaja2, 11/16/2015 07:47PM
Hello everyone. I am trying to install
ds9 on IRAF. I have a pc, OS Windows 10,
but I am running IRAF in Fedora on a
virtual computer on my laptop. I believe
it's called virtual box. But anyway, in
fedora I use Mozilla to go to the ds9
website and downl...

2968

By: fitz

11/16/2015 08:04PM

ellipse and ds9Started by:donzelli, 11/10/2015 04:20PM
Hi,
I'm running IRAF V2.16.1 and STSDAS
V3.17 on a PC with Fedora 22 and when I
try to use ellipse ds9 turns completely
white.
In other words, I cannot see the image
in the interactive mode. I have no
problems with the display routine and
with the ell...

953

By: fitz

11/16/2015 05:45PM

IRAF question concerning sbandsStarted by:valdes, 11/05/2015 07:01PM
Hello,

I have a student using IRAF to compute
photometry in various bands from the
spectrum of an object. She has an
optical spectrum and is trying to
compute the color (B-V) from the
spectrum using the Johnson filter
response. She has a file with ...

978

By: valdes

11/05/2015 07:01PM

How background is calculated using Started by:xyz, 11/02/2015 08:24AM
How background is calculated using
"[b]centroid[/b]" option in
"[b]fitskypars[/b]" sub-task in
"[b]phot[/b]" task ?

I have read IRAF help page. But it did
not describe the details.

Help says: "Compute the intensity
weighted mean of the sky ...

924

By: fitz

11/04/2015 06:28AM

wspectext and list filesStarted by:GalisBG, 10/15/2015 03:54PM
Hi there,

I'm trying to export as text files a lot
of reduced 1d spectra distributed in
different folders using wspectext with
list files for input and output
containing the full path of the fits and
txt files

It works well with reading this list ...

1772

By: GalisBG

10/22/2015 10:09AM

nfit1d errorStarted by:donzelli, 09/29/2015 11:15AM
Hi,

I'm trying to use nfit1d with a
particular table and get the following
message:

ERROR: Table `merge.tab,' does not exist
or cannot be opened.

However, I can tedit the table and all
the columns are there. Moreover, if I
use 'isoplot', 'isopa...

974

By: fitz

09/29/2015 04:51PM

n2gaussfit not fitting all parameters...Started by:ltacconi, 06/29/2010 11:45AM
Perhaps I'm doing something stupid, but
I'm having a problem with n2gaussfit in
that it doesn't seem to fit all the
parameters. Specifically, it seems that
FWHM, Ellip., and Theta remain constant
for all fitting that I do. Below you
will find my param...

2017

By: sscibell

09/28/2015 11:42PM

xgterm crashing when using commands l...Started by:evantuck, 02/13/2015 02:13PM
I had iraf working fine on my MacBook
Pro until I updated to Yosemite. In a
previous post I received help in getting
my login.cl file to work properly. Now
however, I'm having issues displaying
spectra. Whenever I run a command like
splot xgterm cras...

2567

By: paulartcoelho

09/21/2015 08:11PM

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

How to use Reidentify and fitcoordsStarted by:kirankumar, 09/17/2015 02:45PM
Hi All,

I am trying to reduce longslit spectral
data. I am new to it.

I used combine task to combine Flat
Frames to create MasterFlat and Arc
Frame to create MasterArc. I want to use
identify, reidentify, and fitcoord
tasks.

I placed NodA and ...

803

By: kirankumar

09/17/2015 02:45PM

Dohydra looking for the wrong .msStarted by:kcooke, 09/11/2015 03:13PM
I'm currently attempting to use the IRAF
task dohydra in order to reduce
SparsePak data. The task is able to get
past the flat field fitting, but
encounters an error. I believe this
occurs when arcrefs gives a faulty
extension. The task looks for a ....

1920

By: kcooke

09/14/2015 02:03PM

ds9 7.3.2 and regionsStarted by:kkwitter, 09/06/2015 01:38PM
Just downloaded ds9 7.3.2, and
discovered that regions do not show up.
This happens on multiple computers (Mac
OS X 10.9 and 10.10). "Show regions" is
selected (default), but no outline
remains after selecting a region.

Thanks.

1324

By: kkwitter

09/06/2015 02:22PM

Create spiral arms through mkobjectsStarted by:suma99, 08/26/2015 09:46PM
Is it possible to simulate an image
through GALLIST and MKOBJECTS that has
spiral arms? This is what I have tried:

artdata> gallist galaxy1.dat egal=0
xmax=1000 xmin=0 ymax=1000 ymin=0
Number of galaxies in the output list
(20): 500
artdata> mkobj...

969

By: fitz

08/27/2015 12:04AM

ds9 errorStarted by:donzelli, 08/26/2015 03:10PM
Hi,
I installed ds9.linux64.7.3.2 under
Fedora 22 (64-bit), and when I run ds9 I
get:

./ds9: error while loading shared
libraries: libXss.so.1: cannot open
shared object file: No such file or
directory

However, the library is already
installed in...

1638

By: donzelli

08/26/2015 06:18PM

Pixel scale in mkobjectsStarted by:suma99, 08/24/2015 07:41PM
Hello,

I am wondering how to find the pixel
scale from a simulated image of galaxies
made on "gallist" and "mkobjects". I had
done:
artdata> gallist galaxy.dat
Number of galaxies in the output list
(30): 30
artdata> mkobjects galaxy
obj=galaxy.dat...

1111

By: fitz

08/24/2015 10:27PM

Changing size of images in Started by:suma99, 08/24/2015 05:52PM
Hello!

I am trying to change the size of the
simulated image through the "gallist"
and "mkobjects" functions in the
"artdata" package. The image always come
out to be 512 x 512 in size, but I would
like the images to be bigger or smaller
sometimes. T...

1853

By: suma99

08/24/2015 06:03PM

nproto.objmasks - segmentation violationStarted by:claudiarodrigues, 08/07/2015 07:46PM
Dear,

I am getting a segmentation violation
when running objmasks. See below.

nproto> objmasks
List of images or MEF files (teste):
List of output object masks (omt):
ACE: NOAO/IRAF V2.16.1
claudia@halley.das.inpe.br Fri 14:27:20
07-Aug-2015 ...

1299

By: claudiarodrigues

08/20/2015 09:00PM

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

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