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)