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txt-file to fits-formatStarted by:SvetlaTsvetkova, 04/20/2011 09:48AM
Hello,
I have a problem with making my files in
a good format for IRAF. My files are txt
or ascii - 2 columns - one for
wavelenght and one for flux. I want to
convert them into fits-format and proces
them after that. I tried to use
procedures like rspec...

3636

By: SvetlaTsvetkova

04/20/2011 09:48AM

Tutorial problems on iMac G5 and MacBookStarted by:andrej, 08/21/2009 08:01PM
Greetings everyone, I have two computers
using IRAF: an iMac G5, and my MacBook
(both using Mac OS X 10.5). I need to
use IRAF for my research, but I'm very
new to it and am having a difficult time
troubleshooting.

[1] I have installed IRAF into my two...

3349

By: andrej

08/21/2009 08:01PM

troubles with set instrumentStarted by:russty, 03/13/2007 08:32AM
Hi,
I'm trying to set up a translation file
for ccdproc. I created a text file in
ccddb$kpno called RME.dat, and added an
entry in the instruments.men file. I
pasted a copy below:

[code:1:a248d9ba54]subset FILTER

'Dark Frame' dark
'Light Frame' obje...

3928

By: russty

03/13/2007 08:32AM

Trouble with fits flatsStarted by:RJC, 02/10/2010 08:08AM
Hello

I am working my way through the CCD
reduction guide and have run into
problems making my combination of the
flats. When I feed the inlist into EPAR
FLATCOMBINE it gives me a result of :

ERROR: No images to combine
"pclip=pclip, grow=0)"
lin...

4502

By: Dac83

02/10/2010 08:08AM

trouble with cl in cygwinStarted by:tomph, 03/13/2008 11:51PM
I've seen a few similar problems around
but havnt been able to get it sorted yet
I have cygwin with x11 and all shells
installed. Iraf was installed following
the steps from
http://www.iac.es/sieinvens/siepedia/pmwiki.php?n=HOWTOs.IrafCygwin

I get the ...

11937

By: irojas

03/13/2008 11:51PM

Trouble starting clStarted by:conorfarrell, 08/05/2008 06:54PM
I have recently installed Cygwin and
IRAF without any hitches, other than the
following. When I try to start cl I get
the following error:

$ cl
ERROR: task `the' not found
called as: `cl ()'
Error while reading login.cl file - may
need to rebuild ...

17146

By: fitz

08/05/2008 06:54PM

Trouble reading lists with some proce...Started by:jsb3r, 06/22/2017 04:59PM
I have IRAF running on two separate Mac
OSXs. One machine is running Mac OSX
10.8 and IRAF v2.16 and CCDPROC handles
lists without problem. However, when I
try to run CCDPROC on the Mac OSX 10.11
with the following call:

ccdproc images=@targets out...

1619

By: fitz

06/22/2017 05:10PM

trouble installing IRAFStarted by:Guest, 06/13/2007 04:50PM
What am I expected to type at this
prompt:
[quote:d7e71fabb2]IRAF hlib$ directory
(/tmpp/iraf):
[/quote:d7e71fabb2] I tried
/usr/local/lib but that doesn't seem to
make the installer happy.
Thanks
-=Tucker

2164

By: fitz

06/13/2007 04:50PM

Trouble installing for the first time...Started by:Cold, 07/06/2007 10:08AM
Dear Sir/Madam,
I'm using fedora core 6 and i installed
the files which names start with iraf,
iraf-config and put the xgterm.fedora to
the /usr/local/bin directory.
After that
#mv xgterm.fedora xgterm
#chmod -R 777 xgterm
#xgterm
and on the xgterm co...

3938

By: fitz

07/06/2007 10:08AM

trouble getting fc to compile my old ...Started by:buta, 07/20/2015 03:43PM
Hi,

I have a relatively new MAC OSX desktop
(with Yosemite 10.10.4 upgrade) and have
installed iraf using iraf-macosx.tar.gz.
As far as I have been able to tell, the
installation was successful. However, I
have had trouble getting task fc to
compile ...

950

By: buta

07/20/2015 03:43PM

Trimming overlap when combining imagesStarted by:will.flanagan, 05/19/2009 05:41PM
Hi IRAFers,

I have a question that is very basic but
I can't figure out nonetheless:

If you have a dither pattern of say 9
images (partially overlapping images)
and you want to trim out the points that
are in less than say 5 images - how
would you do ...

4321

By: Arp

05/19/2009 05:41PM

Trim script errorStarted by:piverson, 11/30/2007 09:13PM
I have been encountering the error
"Undefined local variable 'x1'" error
while using the following trim script.

[color=blue:3ca5a6763b][size=9:3ca5a6763b]#ap_subtrim_v_1.cl
by Paul Iverson
#the purpose of this script is to remove
possible bad pixels at...

2866

By: piverson

11/30/2007 09:13PM

Treatment of missing MEF extensions i...Started by:jturner, 09/08/2012 02:07AM
In IRAF 2.15, if I try to access a FITS
extension that doesn't exist, I get
this:
[quote:896b7f21cb]
ecl> imhead S20100122S0063.fits[BLAH]
S20100122S0063.fits[BLAH]: FXF: extname
and/or extver value not found ('BLAH')
[/quote:896b7f21cb]
In IRAF 2.16...

3377

By: jturner

09/08/2012 02:07AM

Transformation of (x,y) to (RA,DEC) f...Started by:smp, 01/29/2009 04:12AM
Hi,

(1) I have 10 fits images of the
[b:2e712c5c94]same [/b:2e712c5c94]field.

(2) Each image contains 3 object stars.
Centres of these stars are shifted
slightly from image to image.
(3) Let us take 1st image. I want to
transform [b:2e712c5c94]eac...

3224

By: jturner

01/29/2009 04:12AM

transformation equations for SDSS fil...Started by:iraf_astro, 05/09/2017 01:03AM
Hi,

I have been struggling lately to find
transformation equations to convert
instrumental magnitudes to calibrated
ones for the ugriz system. In IRAF,
landolt transformation equations
(photcal/catalogs package) are provided
for UBVRI system, but the...

690

By: fitz

05/09/2017 04:35PM

Tracking large sourceStarted by:ofwolf42, 12/30/2010 04:48PM
I have a series of fits images showing a
source moving across a fixed telescope.
I want to use iraf to track the motion
of the source. I've been using the
minmax function but the source is quite
large (The images were taken with low
quality hardware). T...

1291

By: fitz

12/30/2010 04:48PM

Total number of events in the plotsStarted by:cosmologist, 12/07/2010 08:46PM
Is there a way to have IRAF tell you the
total number of events in the plots (can
IRAF tell you how many bins it put the
data into)?

Is it in the header? How can I find out?

Thanks

2517

By: cosmologist

12/07/2010 08:46PM

total counts in image sectionStarted by:smp, 06/09/2010 11:42AM
hi,

I have an image section [x1:x2, y1:y2].
I want to calculate total counts in
these (x2-x1) x (y2-y1) pixels.
Any help is appreciated.

Regards,
smp

3162

By: smp

06/09/2010 11:42AM

too many child processes?Started by:mmozena, 07/03/2008 01:07AM
Hello all,
I am trying to run gim2d in iraf on a
new computer and I am getting odd
errors and I am hoping someone might
have some insight.
The first time I ran the routine I got
the error "abnormal termination of
child process "??""
then typed in "flp...

2108

By: fitz

07/03/2008 01:07AM

To find coordinates of the pixel havi...Started by:smp, 03/19/2009 04:27AM
Hi,

I want to know whether there is any IRAF
task which will tell (x,y) coordinates
of that pixel which is having maximum
counts , in a specified image section.

thanks
swapnil

4345

By: jturner

03/19/2009 04:27AM

to create the table I want (new quest...Started by:acard, 06/22/2007 03:27PM
Hi, just a simple question:
I have to create a table (and I use
tcreate) from an ASCII file, but in that
file there are 4 columns, and I want
only to create the table with 3 of
these.

How can I do, in a script, without
editing by hand the table?
Thanks.

3794

By: fitz

06/22/2007 03:27PM

tmatch problemStarted by:rjvo, 09/28/2007 03:51PM
I have a ttable "x":

#c id ch*6 %-6s
#c ra d %11.1h hours
#c dec d %11.1h degrees
w0 8:51:21.6 11:46:06.1
w2 8:51:21.6 11:46:06.5

When I run:

tmatch x x xx ra,dec ra,dec 0:0:1
diagf=STDOUT nmcol1=id nmcol2=id

The output is:

The follo...

3143

By: fitz

09/28/2007 03:51PM

Tmatch gives random matches... sometimesStarted by:biledemon, 03/08/2007 04:15PM
Hey everyone, again I must ask without
contributing and for that I apologise...

I'm having a problem using tmatch with
sphere+, in that it works perfectly most
of the time but every 10-20 matches is
completely wrong in the XCENTER value.
I.e it matches...

4194

By: biledemon

03/08/2007 04:15PM

Timing analysis softwareStarted by:FSBoyden, 04/22/2010 01:19PM
Hello.

Been a while since I posted. Research!

I need to do some timing analysis on
photometry (using IRAF) results
(light-curves). The recommended software
is XRONOS, but the input files needs to
be specific FITS format data files.

Q! Is it possible,...

1272

By: fitz

04/22/2010 01:19PM

timestampsStarted by:august_fly, 07/10/2008 03:48PM
hi,

sort of a strange problem with
timestamps and IRAF. Running iraf 2.14
on Mac OSX 10.5.4 on a Mac Pro.

basically, imreplace seems to be setting
a timestamp 1 hour slow. I've done this
a couple of times now with different
files and introduced dif...

1860

By: fitz

07/10/2008 03:48PM

TIME-OBS Y2K problem!!!Started by:auriga, 11/28/2007 12:15AM
I do not have a "time-obs" keyword in my
FITS header that has the time of the
observation. I do have the "date-obs"
keyword in the format
YYYY-MM-DDTHH:MM:SS.
I am trying to figure out how to get the
HH:MM:SS part out of the "date-obs"
keyword, but wi...

2892

By: auriga

11/28/2007 12:15AM

Three computers in the same office no...Started by:andrej, 09/21/2015 08:10PM
Greetings.
There are three computers in my office
and I am in the process of testing IRAF
with it. I am working to get IRAF
installed on another laptop, and I am
testing a working copy on my linux box.

I noticed, however, that even my
"working" copy...

1487

By: fitz

09/21/2015 08:13PM

thread safeStarted by:dbrenner, 10/15/2008 03:11PM
Is iraf considered "thread safe". In a
script, can it be called multiple times
in a C program using threads?
Thanks

2713

By: dbrenner

10/15/2008 03:11PM

the algorithm of daophot.photStarted by:haha, 10/25/2013 03:46PM
Generally pixel table is full of
grids.But the photrometric aperture is a
circle.

Question is how to deal with the grids
which are partly in the aperture?
If we use an area weighting, the
calculation will not be easy.

:)

1644

By: haha

11/03/2013 02:41PM

thanksStarted by:getulio, 04/23/2007 03:50PM
Thank you very much Mike.

I guess your help will be very useful.

You've said that there's a regular
installation. I don't know it. Could you
tell me more about it?

Thanks a lot one more time.
GEtulio

3383

By: fitz

04/23/2007 03:50PM

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