table of contents
| ASTSCRIPT-PSF-SELECT-STARS(1) | User Commands | ASTSCRIPT-PSF-SELECT-STARS(1) |
NAME¶
astscript-psf-select-stars - Select good stars for constructing the PSF
SYNOPSIS¶
astscript-psf-select-stars [OPTIONS] image.fits
DESCRIPTION¶
Build a catalogue of "good stars" that will be considered for constructing an extended and non parametric PSF. Here, "good stars" means that they don't have close objects that affect it sourrondings and consequently they are not contaminated. The script will construct a catalog of stars from reference datasets (Gaia) if the user does not provide another one. In addition to this, other parameters like the axis ratio are considered to filter the sample and select only proper stars.
astscript-psf-select-stars options:¶
- Input:
- -h, --hdu=STR/INT
- HDU/Extension name of number of the input file.
- -S, --segmented=STR
- Segmentation file obtained by Segment (astsegment).
- -D, --dataset=STR
- Query dataset ("gaia --dataset=edr3", etc.).
- -r, --racolumn=STR
- Right Ascension (R.A.) column name.
- -d, --deccolumn=STR
- Declination (Dec) column name.
- -f, --field=STR
- Magnitude column name ("phot_rp_mean_mag", for Gaia).
-p, --parallaxanderrorcolumn=STR,STR The name of the parallax column.
-m, --magnituderange=FLT,FLT The range of magnitude.
- -Q, --minaxisratio=FLT
- Minimum axis ratio to be accepted (default to 0.9).
- -M, --mindistdeg=FLT
- Minimum distance to more bright neighbour stars. to be accepted, in degrees.
- -c, --catalog=STR
- Catalog of stars containing: ra, dec, magnitude, parrallax, parrallax_error.
- -a, --matchaperturedeg=FLT Aperture, in pixels, to match catalogue ra and
- dec coordinates with clumps' ra and dec.
- -F, --faintmagdiff
- The difference from the faintest star which the user will be determined the faintest star in '--magnituderange' option.
- -b, --brightmag
- The limit for selecting wider range of bright stars.
- Output:
- -o, --output
- Output table with the object coordinates.
- -t, --tmpdir
- Directory to keep temporary files.
- -k, --keeptmp
- Keep temporal/auxiliar files.
- Operating mode:
- -h, --help
- Print this help.
- --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 corresponfing short options.
GNU Astronomy Utilities home page: http://www.gnu.org/software/gnuastro/
REPORTING BUGS¶
Report bugs to bug-gnuastro@gnu.org
COPYRIGHT¶
Copyright © 2020-2024 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 Sepideh Eskandarlou.
SEE ALSO¶
The full documentation for astscript-psf-select-stars is maintained as a Texinfo manual. If the info and astscript-psf-select-stars programs are properly installed at your site, the command
- info astscript-psf-select-stars
should give you access to the complete manual.
| February 2024 | GNU Astronomy Utilities 0.22 |