table of contents
| 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 in an image
SYNOPSIS¶
astscript-psf-scale-factor [OPTION] FITS-files
DESCRIPTION¶
This script is part of GNU Astronomy Utilities 0.19.
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 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-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.
- 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 optional 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 © 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
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.
| October 2022 | GNU Astronomy Utilities 0.19 |