Automatically finds a guide star from the HST Guide Star Catalog, and moves the guide probe to the correct location.
2=to: 2!:}Format: GSSEARCH
2=to: 2!:}Comments: GSSEARCH finds the brightest guide star; sometimes this will saturate the autoguider CCD unless very short integration times are used. GSSEARCH automatically informs the T/S of the guide probe position, so this does not need to be done by hand.