Utilities
HST Program Information
HST Phase 2 Finder Charts
Instructions on providing HST Phase 2 coordinates
Access GSC 2.3 (Catalog of objects on POSS/UKSTU survey plates)
Access DSS images (POSS/UKSTU surveys plates with GSC2/ICRS astrometry)
Convert GSC 1 coordinates into GSC 2 (ICRS) reference frame coordinates
Object Position Finder and Coordinate Convertor

Historical Links [will be removed eventually]
Instructions on providing HST Cycle 14 and earlier Phase 2 coordinates
Access GSC 1.1 for HST cycle 14 and earlier coordinates
Access DSS images for measuring HST cycle 14 coordinates