astscript-psf-select-stars

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).

-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 [email protected]

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 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.