Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help 
ASTSCRIPT-PSF-SCALE-FACTOR(1)	  User Commands    ASTSCRIPT-PSF-SCALE-FACTOR(1)

NAME
     astscript-psf-scale-factor - Find factor to scale PSF to a given star

SYNOPSIS
     astscript-psf-scale-factor [OPTION] FITS-files

DESCRIPTION
     This script is part of GNU Astronomy Utilities 0.24.

     This  script will consider a center position and then compute the factor by
     which it is necessary to multiply the specified PSF image in order to match
     it with the object at the center (within a ring radii). The main idea is to
     have the necessary factor that will be used to allocate the  PSF  with  the
     proper flux value for constructing the scattered light field.

     For more information, please run any of the following commands. In particu-
     lar  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-scale-factor

     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

   astscript-psf-scale-factor options:
	    Input:

     -h, --hdu=STR
	    HDU/extension of all input FITS files.

     -p, --psf=STR
	    PSF image fits file.

     -P, --psfhdu=STR
	    HDU/extension of the PSF image.

     -O, --mode=STR
	    Coordinates mode ('wcs' or 'img').

     -c, --center=FLT,FLT
	    Center coordinates of the object.

     -W, --widthinpix=INT,INT Width of the stamp in pixels.

     -n, --normradii=INT,INT Minimum and maximum radii (in pixels)
	    for computing the scaling factor value.

     -S, --segment=STR
	    Output of Segment (with OBJECTS and CLUMPS).

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

     -d, --nocentering
	    Do not do the sub-pixel centering to new pix grid.

	    Output:

     -t, --tmpdir
	    Directory to keep temporary files.

     -k, --keeptmp
	    Keep temporal/auxiliar files.

	    Operating mode:

     -?, --help
	    Print this help list.

     --cite
	    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  op-
     tional for any corresponding short options.

     GNU Astronomy Utilities home page: http://www.gnu.org/software/gnuastro/

REPORTING BUGS
     Report bugs to bug-gnuastro@gnu.org.

COPYRIGHT
     Copyright (C) 2020-2025 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

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

	    info astscript-psf-scale-factor

     should give you access to the complete manual.

GNU Astronomy Utilities 0.24	  November 2025    ASTSCRIPT-PSF-SCALE-FACTOR(1)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=astscript-psf-scale-factor&sektion=1&manpath=FreeBSD+Ports+15.1.quarterly>

home | help