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NCOMBINEStarted by:le.davide, 01/09/2011 11:21PM
Hi,
I know that this is not an IRAF
question, but...if the keyword NCOMBINE
is missing in a header does it means
that NCOMBINE=1?
Many thanks!

2590

By: fitz

01/09/2011 11:21PM

neon spectrumStarted by:milena, 10/11/2010 12:09PM
hey,

I want to ask if it is possible to print
a diagram of a neon spectrum from IRAF.
I need the spectral lines from 3000-5500
Angström. Or if you know where to get a
diagram like this. Not in tabulated
form. It's for the package "slit", task
"identif...

4367

By: fitz

10/11/2010 12:09PM

New Linux Astronomy DistributionStarted by:fitz, 08/13/2013 06:48PM
[color=red:f8f966c85a][Moderator's Note:
Posted on behalf of
bamm@astronomy.com.ph][/color:f8f966c85a]

Hello,

I wish to introduce to you my project,
Distro Astro, a Linux
distribution for astronomy.

Distro Astro has IRAF preinstalled, with
X11Iraf, X...

2911

By: fitz

08/13/2013 06:48PM

New York Times article on R (January ...Started by:Jason Quinn, 01/07/2009 05:04PM
Today there was a New York Times article
"Data Analysts Captivated by R’s Power
". R is a very popular statistics
program. I think of IRAF and R as being
very similar style environments. I
thought this might be of interest to
some people here. [url]ht...

4311

By: jturner

01/07/2009 05:04PM

OverscanningStarted by:hawcheng, 06/15/2010 07:16PM
General question on overscan fitting and
bias frame subtraction : why do people
do both? It seems that simply
subtracting a bias frame from one's
program frames would accomplish the same
thing, as the bias frames ought to have
the same bias level as the...

2993

By: jturner

06/15/2010 07:16PM

Paralell or multiple IRAF sessions?Started by:Santiago, 03/08/2014 11:35PM
Hi, i'm trying to take advantage of my
home system, an AMD FX-8120 8 core
system with 16GB of RAM (upgradeable to
32gb) and 2 SATA 3 HDDs. I wonder how
can i run IRAF in paralell, so it uses
all 8 processors, RAM and/or hard drives
IO capabilities, or m...

1713

By: fitz

03/09/2014 02:03AM

Parallel Computing Operating Systems ...Started by:RJ Emery, 03/25/2007 02:31PM
Anyone know of parallel operating
systems designed to work with multiple
PC processors?

8055

By: fitz

03/25/2007 02:31PM

problem in using iuetools in irafStarted by:nishahansraj, 09/19/2009 06:34AM
I am having the following Problem while
working with iraf. I have some .mx files
which i need to convert to .fits file
for which i require iuetools package to
be installed in iraf. I was already
having iraf installed, i installed
iuetools. I am having t...

6683

By: nishahansraj

09/19/2009 06:34AM

PSF-ing and ChiStarted by:hawcheng, 03/28/2011 02:58PM
I have a question about PSF fitting and
the chi statistic that is employed in
Daophot and Allstar. Perhaps those of
you who don't use Daophot or Allstar but
do PSF fitting might also have some
insight regarding this.

Basically, when I plot chi vs. raw ...

4225

By: azangari

03/28/2011 02:58PM

question regarding IRAF's 16 frame ii...Started by:Jason Quinn, 05/15/2008 11:29PM
I'm curious what architectural
limitations on the number of display
frames that IRAF can support are. How
difficult would it be to increase it to
32? 512? 1024? Why have a limitation at
all? I'm not sure how the image servers
manage memory but it seems ...

4783

By: fitz

05/15/2008 11:29PM

Save The BitsStarted by:eric1, 04/11/2006 04:04PM
What program do I run to create accounts
in a downloaded version of Save The
Bits?

8326

By: fitz

04/11/2006 04:04PM

Scanf help docStarted by:Jason Quinn, 04/07/2006 06:03PM
[quote:e68ad79c50]A field format
specification has the form
"%[*][w][lh]C", where '*'
indicates the field should be
skipped, W is the field width, 'l'
indicates longword output, 'h'
indicates halfword output, and C is
the format code....

5761

By: Jason Quinn

04/07/2006 06:03PM

Scientific Computing ForumStarted by:RJ Emery, 03/25/2007 02:38PM
Anyone know of a forum where scientific
computing can be discussed?

5424

By: fitz

03/25/2007 02:38PM

Sky! Sky!Started by:hawcheng, 04/22/2010 05:51PM
If there is no moonlight, how much
variation in the sky brightness for a
given field can I expect? I have 40
exposures of the same field taken across
a year, and after accounting for
exposure time differences, I'm still
finding the sky level to vary by ...

2527

By: FSBoyden

04/22/2010 05:51PM

Tale of Two FramesStarted by:hawcheng, 09/13/2010 08:22PM
Got a general question / mystery.

I have two frames of the same object
taken in succession. The stars in frame
A are half as bright as those in frame
B. Yet frame A has slightly better
seeing, as in a lower FWHM for its
stellar profiles, so that appare...

2467

By: fitz

09/13/2010 08:22PM

Tool to analyze allsky and normal ccd...Started by:Daedalus, 11/05/2010 05:53PM
Hi!

I was looking Linux programs to analyze
allsky and other camera images and found
IRAF.net web page.

Not sure, but is there programs in IRAF
that can analyze sky images to generate
FITS images? Or anything else that can
try to find stars from ccd ...

2760

By: fitz

11/05/2010 05:53PM

typo fix for daophot.psfStarted by:Jason Quinn, 11/24/2007 05:09AM
The DAOPHOT psf task has a typo in its
parameters. There's a missing period.
Check the epar for the pstfile
parameter. It is

"Input psf star list(s) (default:
image.pst?)"

when it should be

"Input psf star list(s) (default:
image.pst.?)"

Jason

6406

By: fitz

11/24/2007 05:09AM

Want to build a dedicated BPM makerStarted by:Jason Quinn, 08/15/2009 12:32AM
Hi, guys. I'm considering to develop a
dedicated bad pixel mask generator. I'd
like it to be as cross platform as
possible. The basic functionality and
operation of the program will be the
following:

1) display a FITS image
2) use the mouse to click an...

5092

By: valdes

08/15/2009 12:32AM

Xgterm cannot find commandStarted by:Gr3g0ri0, 08/01/2007 08:19PM
Hi fellow IRAF users,

I'm a student astronomer, and I'm
working from my laptop, accessing a
server in the department remotely
through Cygwin. For the last month,
everything has worked fine with access
the server. I'd start cygwin, type
"startx",...

8700

By: fitz

08/01/2007 08:19PM

yes YES no NO ...Started by:milena, 01/07/2011 11:51AM
Hey,

Sometimes IRAF asks something like:

Fit aperture 1 interactively?
(no|yes|NO|YES) (yes):

What is the difference between no and
NO? and yes and YES?

THANK YOU!! :)

milena

2278

By: Jason Quinn

01/07/2011 11:51AM

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