Please fill out EITHER the position or one of the ID fields HST ID (10 digits) GSC 2 Catalogue Access by Position GSC 2 Catalogue Access by Position (old format) Optional parameters Field Size (arcmin) GSC1 ID (5 digit region + 5 digit number)Right Ascension Format Declination H M S D M S Ref.Frame Equinox GSC Version GSC 2.x Catalogue Access by ID RA hh:mm:ss.s DEC +-dd:mm:ss.s Inner Radius Outer Radius Max Objects Classification Bright Mag Faint Mag