Plotting the HST Guide Star Catalog Using SAOimage and imgsc

[HST GSC] [USNO-A2.0] [2MASS PSC] [USNO-SA1.0] [USNO-SA2.0] [labelled] [unlabelled] [no stars]

image with USNO-SA1.0

This SAOimage display shows the alignment of USNO-SA1.0 Stars with a test image with a world coordinate system. immatch can be run to list matches between USNO-SA1.0 stars and sources found in the image. The command used to display the image, before the labels were turned off using the ] key, was 

saogsc test.fts
where saogsc is 
saoimage -reg `imgsc -r 10 $1` -wcscom sgsc_-ha_%s $*
Clicking the w key on the star closest to the center returns the following: 
sgsc 2.5, 8 December 1998, Doug Mink SAO  Find closest star
GSC number  RAJ2000       DecJ2000    Mag  Type  Arcsec
4383.0340 09:55:23.638 +69:00:49.57  14.59  0     1.56

[Telescope Data Center] [WCSTools] [SAOimage] [imgsc] [imgsc example 1] [imgsc example 2]