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astscript-psf-stamp - Make normalized stamp of star with background objects masked

astscript-psf-stamp [OPTION] FITS-files

This script is part of GNU Astronomy Utilities 0.17.

This script will consider a center position to make a normalized stamp. It is intendeed to generate several stamps and combine them to obtain a PSF.

For more information, please run any of the following commands. In particular the first contains a very comprehensive explanation of this script's invocation: expected input(s), output(s), and a full description of all the options.

Inputs/Outputs and options:
$ info astscript-psf-stamp
Full Gnuastro manual/book:
$ info gnuastro

If you couldn't find your answer in the manual, you can get direct help from experienced Gnuastro users and developers. For more information, please run:

$ info help-gnuastro

-h, --hdu=STR
HDU/extension of all input FITS files.
-O, --mode=STR
Coordinates mode ('wcs' or 'img').
-c, --center=FLT,FLT
Center coordinates of the object.
-W, --stampwidth=INT
Width of the stamp in pixels.
-n, --normradii=INT,INT Minimum and maximum radii (in pixels)
for computing the normalization value.
-S, --segment=STR
Output of Segment (with OBJECTS and CLUMPS).
-w, --corewidth=INT
Area width of the central object in pixels for unmasking.
-N, --normop=STR
Operator for computing the normalization value (mean, sigclip-mean, etc.).
-Q, --axisratio=FLT
Axis ratio for ellipse maskprofile (A/B).

-p, --positionangle=FLT Position angle for ellipse mask profile.

-s, --sigmaclip=FLT,FLT Sigma-clip multiple and tolerance.

-o, --output
Output table with the radial profile.
-t, --tmpdir
Directory to keep temporary files.
-k, --keeptmp
Keep temporal/auxiliar files.
Operating mode:
-?, --help
Print this help list.
BibTeX citation for this program.
-q, --quiet
Don't print any extra information in stdout.
-V, --version
Print program version.

Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.

GNU Astronomy Utilities home page:

Report bugs to

Copyright © 2020-2022 Free Software Foundation, Inc. License GPLv3+: GNU General public license version 3 or later.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

Written/developed by Raul Infante-Sainz

The full documentation for astscript-psf-stamp is maintained as a Texinfo manual. If the info and astscript-psf-stamp programs are properly installed at your site, the command
info astscript-psf-stamp

should give you access to the complete manual.

March 2022 GNU Astronomy Utilities 0.17

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