Guest Observer Facilities & Science Centers Select One AGILE ASCA BeppoSAX COBE CGRO Chandra EUVE Fermi (formerly GLAST) GALEX HETE-2 INTEGRAL ROSAT RXTE Suzaku Swift WMAP XMM-Newton NASA Archives Select One ADS AstroGravS EOSDIS HORIZONS IRSA LAMBDA MAST Michelson NED NSSDC NStED PDS SDAC SPDF Spitzer Science Center HEASARC Tip: View all tips [1]The KNIFE ray-tracing program is scheduled to be made available as part of the normal FTOOLS software release by the end of this year. [2]The guard rate is a housekeeping parameter that measures the rate of particle interactions with the plastic scintillator guard that surrounded most of the detector. HEASARC Home | Observatories | Archive | Calibration | Software | Tools | Students/Teachers/Public Last modified: Monday, 19-Jun-2006 11:40:52 EDT