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sgsc(1) General Commands Manual sgsc(1) Name sgsc - Find HST GSC stars in a square on the sky Synopsis sgsc [options] [-b or -j] ra dec Description sgsc is a utility for finding all of the Hubble Space Telescope Guide Star Catalog objects in a specified region of the sky and listing them with their sky positions and magnitudes in order of brightness, with the brighter ones first. Output is to standard out, unless the -w flag is set, in which case it goes to objectname.gsc or search.gsc. It is somewhat similar to RGSC, which can search from lists of coor- dinates but cannot sort the output. It is a link to scat. Options -a List single closest catalog source -b <RA> <Dec> Output B1950 (FK4) coordinates -d Sort by distance from center instead of flux -g <class> Object class (0=stars 3=galaxies -1=all) -h Print heading, else do not -j <RA> <Dec> Output J2000 (FK5) coordinates around this center -m [<bright magnitude>] <faint magnitude> Limiting catalog magnitude(s) (default none, bright -2 if only faint is given) -n <num> Number of brightest stars to print -o <name> Object name used for output file naming -r <radius> Radius of search circle 1in arcsec (default 10) -s Sort by RA instead of flux -t Tab table to standard output as well as file -v Verbose listing of processing intermediate results -w Write tab table output file imagename.gsc See Also scat(1), rgsc(1), suac(1), susac(1), imgsc(1) Author Doug Mink, SAO (dmink@cfa.harvard.edu) 14 April 1998 WCS sgsc(1)
