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VersionsASTSCRIPT-ZEROPOINT(1) User Commands ASTSCRIPT-ZEROPOINT(1)
NAME
astscript-zeropoint - Estimate zero point of an image
SYNOPSIS
astscript-zeropoint [OPTIONS] image.fits
DESCRIPTION
Calculate the Zeropoint of the image based on a reference images or catalog.
astscript-zeropoint options:
Input(s):
-h, --hdu=STR/INT
HDU/Extension name or number of input.
-S, --starcat=STR
Catalog with positions for aperture photomery.
--starcathdu=STR/INT
HDU of table in '--starcat'.
--starcatra=STR/INT
Column in '--starcat' that contains RA.
--starcatdec=STR/INT
Column in '--starcat' that contains DEC.
--mksrc=STR
Makefile (for developers when debugging).
Output:
-o, --output
Output file name.
-t, --tmpdir
Directory to keep temporary files.
-k, --keeptmp
Keep temporal/auxiliar files.
-K, --keepzpap
Keep each aperture's zp in a different HDU.
General settings
-a, --aperarcsec=FLT[,FLT]
Aperture radius (in arc-seconds) for photometry.
-M, --magnituderange=FLT,FLT Range of the magnitude to be considered.
Reference catalog mode
-c, --refcat=STR
Reference catalog file name.
-C, --refcathdu=STR/INT
Reference catalog HDU name of number.
-r, --refcatra=STR
Reference catalog Right Ascension (R.A.) column.
-d, --refcatdec=STR
Reference catalog Declination (Dec) column.
-m, --refcatmag=STR
Reference catalog Magnitude column.
-s, --matchradius=FLT
Radius (arcsec) to match stars and ref. catalog.
Reference image mode
-R, --refimgs=STR[,STR]
Reference image name(s) with known zeropoint.
-H, --refimgshdu=STR/INT
Reference image HDU name(s) or number (s).
-z, --refimgszp=FLT[,FLT]
Zero point(s) of the reference image(s).
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.
-N, --numthreads=INT
Number of threads; maximum if not given.
Mandatory or optional arguments to long options are also mandatory or optional for any corresponfing short op‐
tions.
GNU Astronomy Utilities home page: http://www.gnu.org/software/gnuastro/
REPORTING BUGS
Report bugs to bug-gnuastro@gnu.org
COPYRIGHT
Copyright © 2022-2024 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 et al.
SEE ALSO
The full documentation for astscript-zeropoint is maintained as a Texinfo manual. If the info and astscript-ze‐
ropoint programs are properly installed at your site, the command
info astscript-zeropoint
should give you access to the complete manual.
GNU Astronomy Utilities 0.22 February 2024 ASTSCRIPT-ZEROPOINT(1)
NAME
astscript-zeropoint - Estimate zero point of an image
SYNOPSIS
astscript-zeropoint [OPTIONS] image.fits
DESCRIPTION
Calculate the Zeropoint of the image based on a reference images or catalog.
astscript-zeropoint options:
Input(s):
-h, --hdu=STR/INT
HDU/Extension name or number of input.
-S, --starcat=STR
Catalog with positions for aperture photomery.
--starcathdu=STR/INT
HDU of table in '--starcat'.
--starcatra=STR/INT
Column in '--starcat' that contains RA.
--starcatdec=STR/INT
Column in '--starcat' that contains DEC.
--mksrc=STR
Makefile (for developers when debugging).
Output:
-o, --output
Output file name.
-t, --tmpdir
Directory to keep temporary files.
-k, --keeptmp
Keep temporal/auxiliar files.
-K, --keepzpap
Keep each aperture's zp in a different HDU.
General settings
-a, --aperarcsec=FLT[,FLT]
Aperture radius (in arc-seconds) for photometry.
-M, --magnituderange=FLT,FLT Range of the magnitude to be considered.
Reference catalog mode
-c, --refcat=STR
Reference catalog file name.
-C, --refcathdu=STR/INT
Reference catalog HDU name of number.
-r, --refcatra=STR
Reference catalog Right Ascension (R.A.) column.
-d, --refcatdec=STR
Reference catalog Declination (Dec) column.
-m, --refcatmag=STR
Reference catalog Magnitude column.
-s, --matchradius=FLT
Radius (arcsec) to match stars and ref. catalog.
Reference image mode
-R, --refimgs=STR[,STR]
Reference image name(s) with known zeropoint.
-H, --refimgshdu=STR/INT
Reference image HDU name(s) or number (s).
-z, --refimgszp=FLT[,FLT]
Zero point(s) of the reference image(s).
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.
-N, --numthreads=INT
Number of threads; maximum if not given.
Mandatory or optional arguments to long options are also mandatory or optional for any corresponfing short op‐
tions.
GNU Astronomy Utilities home page: http://www.gnu.org/software/gnuastro/
REPORTING BUGS
Report bugs to bug-gnuastro@gnu.org
COPYRIGHT
Copyright © 2022-2024 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 et al.
SEE ALSO
The full documentation for astscript-zeropoint is maintained as a Texinfo manual. If the info and astscript-ze‐
ropoint programs are properly installed at your site, the command
info astscript-zeropoint
should give you access to the complete manual.
GNU Astronomy Utilities 0.22 February 2024 ASTSCRIPT-ZEROPOINT(1)