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finder_221 installation problemStarted by:prajwel, 06/01/2015 11:47AM
Hi, I am trying to install finder on a
centos. I tried "dynamic external
package loading", but unfortunately
finder is not listed there. I downloaded
the file from
ftp://iraf.noao.edu/iraf/extern/finder_221.tar.gz
and tried running "mkpg redhat". I end
... 		 
806 1
By: fitz
06/03/2015 04:25PM
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wspectext to linear wavelengthsStarted by:fitz, 07/09/2016 03:09AM
.[color=red][Moderator's Note: Forwarded
from submitted story on behalf of
user.][/color]

I have many (1400) spectra with
logarithmic binning in wavelength, how
do I make a text file
with wavelengths in Angstroms rather
than log(Angstroms)?

thank... 		 
819 1
By: fitz
07/09/2016 03:28AM
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Hedit colon separated coordinatesStarted by:dmag, 12/02/2016 05:22PM
I am trying to update the header of my
fits file with coordinates and time of
the observation and i want them in the
'hh:mm:ss' format. I use the hedit
command as follows

hedit test.fits RA '10:17:58' add+

but iraf convert it into a decimal
format... 		 
823 1
By: fitz
12/06/2016 09:00AM
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Pixel subscript out of boundsStarted by:cassioleandro, 09/27/2018 08:49PM
I'm processing nifs data using adapted
nifsexample scripts. They run OK, but
when I try to nfextract the spectrum
from the final cubes I have the folowing
error message:

ERROR: Pixel subscript out of bounds
(catfbrgN20150630S0161[SCI,1][1:62,*])
... 		 
824 0
By: cassioleandro
09/27/2018 08:49PM
Normal Topic
mknoiseStarted by:tsaab, 11/09/2013 12:53AM
How much Poisson noise is added when i
am using mknoise? 		 
836 2
By: tsaab
11/09/2013 02:41AM
Normal Topic
splot: deblending with constant redshiftStarted by:chewbacca, 07/27/2014 11:47AM
Hi,

I am using splot to fit doppler shift in
absorption lines that are very weak, so
I would like to take advantage of the
'single' option in the deblending
routine.
However, my lines are separated by ~150
nm so Delta(lambda) can vary quite a lot
be... 		 
840 2
By: chewbacca
07/28/2014 07:44AM
Normal Topic
ESO files and xonedspec packageStarted by:fitz, 08/15/2018 04:49PM
[color=darkred][Moderator's Note:
Forwarded from Story posting][/color]


Using ESO file fits I realize I have to
use xonedspec package since the
wavelength data is given in a separate
array. Now I can "splot" the file where
before it says: ERROR: M... 		 
856 0
By: fitz
08/15/2018 04:49PM
Normal Topic
what are the general tasks like sextr...Started by:haha, 09/30/2014 12:51PM
I mean tasks in iraf. 		 
858 2
By: haha
10/04/2014 01:34PM
Normal Topic
esoselect doesnStarted by:Agis, 05/06/2014 04:38PM
Hi,

I have a problem with the keyword
'HIERARCH ESO INS DPOR POS'. I need to
check the value of this keyword in the
headers of a long list of .fits images.
Using the esoselect.cl script would be
very helpful for me but when I execute
it I get:

ecl... 		 
865 1
By: fitz
05/06/2014 05:28PM
Normal Topic
writing an IRAF taskStarted by:saumya, 03/04/2014 04:17PM
Hi guys !!! Wassuup !!!

I need to write an IRAF task. I am
clueless. Please help me. I am
explaining the problem below-

Let us have a fits image where all the
counts in pixel boxes are zero. Now, I
need to assign values (real or integer)
to differ... 		 
866 0
By: saumya
03/04/2014 04:17PM
Normal Topic
a problem with daophotStarted by:wuxiaohan, 07/06/2015 09:22AM
Hello,
I want to make a CMD for NGC419. I went
through daofind, phot, psf, and allstar.
Then I matched the stars using the Linux
program "match". But when I plotted the
CMD with the Matlab function scatter, it
looked very strange. When I magnified
the ... 		 
876 0
By: wuxiaohan
07/06/2015 09:22AM
Normal Topic
fconvolveStarted by:rachanab, 02/10/2017 01:36PM
Hi,

I am trying to convolve my image with a
psf and I am struggling with the
following two things:

1) It takes a really long time to time
to get the output file (~20mins).
2) My input fits file has 0 values
outside the field of view, but once
thi... 		 
883 1
By: fitz
02/10/2017 04:04PM
Normal Topic
can't terminate entry mode in mkcatalogStarted by:Paulasarkis, 06/26/2014 07:50AM
This is the first time I try to do
photometry using IRAF. I want to make a
catalog for my standard stars. I am
using the package [b]mkcatalog[/b].

I finished entering the name of the
columns and their width. I enter ^Z and
^D to terminate entry mode... 		 
900 2
By: Paulasarkis
06/29/2014 09:46PM
Normal Topic
Setting the image center in msctpeakStarted by:paco, 05/11/2017 08:51PM
Hello,

I am using msctpeak for tweaking the WCS
on various images---some from mosaic
detectors, others from single-chips.
msctpeak is really convenient because of
its nice interactive features (vs using
ccfind and ccmap, for instance).

My problem... 		 
910 0
By: paco
05/11/2017 08:51PM
Normal Topic
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 ... 		 
922 1
By: kanaan
06/22/2016 09:15PM
Normal Topic
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 ... 		 
923 1
By: fitz
11/04/2015 06:28AM
Normal Topic
about the flux calibration of a spectrumStarted by:haha, 09/04/2014 03:49AM
when we run
apall

Automatically there is a size for an
aperture. That size is the FWHM or
something of the aperture? Or we can
choose the size of the aperture by
ourself?

If we choose by hand, the flux may
become arbitrary? 		 
929 0
By: haha
09/04/2014 03:49AM
Normal Topic
Re: A WERID FLUX CALIBRATION PROBLEMStarted by:haha, 11/07/2013 12:35PM
I am extracting a spectrum of a star by
iraf. During the several steps near the
end , I meet a flux calibration problem
.

Anybody knows why?



calibrate
input=@imagelist3//btfc_tran.0001
output=@imagelist3//flux extinct+ flux+
\
extinction="./e... 		 
929 1
By: haha
11/07/2013 06:24PM
Normal Topic
Add external scriptStarted by:anestis_tziam, 01/27/2015 06:18AM
Hallo to all,


I need to add an external iraf
script. This is just a .cl file, so I am
not talking for a package or anything
else. How can I make this active and use
it like the rest of the scripts?

Thanks a lot. 		 
938 1
By: fitz
01/27/2015 08:17AM
Normal Topic
Problem with noao.onedspec.telluricsStarted by:elenamanjavacas, 11/22/2013 01:33PM
Dear all,

I am using the package tellurics in IRAF
to remove the tellurics from my spectra
(in .fits format) and I have a problem.
I use as an input: spectrum.fits(0), as
telluric spectrum: tell.fits(0) and as
output: out.fits. Everything runs, but
... 		 
939 3
By: elenamanjavacas
11/28/2013 04:38PM
Normal Topic
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... 		 
952 1
By: fitz
11/16/2015 05:45PM
Normal Topic
help for the installationStarted by:Guest, 03/09/2010 01:10PM
Hello
I need some help about the instalation
to the package gmisc.
I download the readme, but the
instalation its not good because its
not work.
I'm working with Ubuntu 8.10 and the
IRAF 2.14.
My problem is in the point 3)
after the ftp, in the uncompr... 		 
955 1
By: fitz
03/09/2010 01:10PM
Normal Topic
ccdproc uses "nointerp" parameter twi...Started by:sontag, 06/09/2014 06:46PM
Hi Mike,

A PyRAF user found something which the
CL allows but PyRAF does not. In
checking it, I realized it looks like it
may be a bug which you may wish to fix.

In ccdproc.cl, there are two calls to
_ccdtool().

In both of them, the "nointerp"... 		 
965 1
By: fitz
06/09/2014 07:05PM
Normal Topic
how to dump the data of a spectrum go...Started by:haha, 08/26/2014 02:59PM
There is only one extension for a
spectrum fits file got by iraf.
However there are four parts including
primary, background...

Splot can display the spectrum with
wavelength and flux.

I tried to read the data of the spectral
fits file, but only ... 		 
966 2
By: haha
08/29/2014 09:13AM
Normal Topic
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... 		 
967 1
By: fitz
08/27/2015 12:04AM
Normal Topic
Problem with rfitsStarted by:grayro, 03/18/2015 07:11PM
Hi,
I am reposting this, as the original
seems to have been lost. I am having a
problem with rfits in a simple script
which I do not seem to be able to get
past. The script is:

string star = "first"
string *nlist
real expos
int f
i = 0

whil... 		 
971 1
By: fitz
03/26/2015 06:38PM
Normal Topic
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... 		 
973 2
By: fitz
09/29/2015 04:51PM
Normal Topic
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 ... 		 
976 0
By: valdes
11/05/2015 07:01PM
Normal Topic
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 3
By: fitz
04/02/2016 01:30PM
Normal Topic
Fitparams segmentation violationStarted by:corinn4, 01/26/2018 06:22PM
Hi, I'm a student working on photometry
of a supernova. I've run into the same
problem as described in this topic,
[url]https://iraf.net/forum/viewtopic.php?showtopic=1467834[/url].
I'm using a Mac with OS X 10.11 and IRAF
2.16.1, 64-bit. I've read the... 		 
990 2
By: corinn4
01/28/2018 06:12PM
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