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Hubble Space Telescope
WF/PC-1 Decontamination Dates

Year Date Day of Year Type and Results
1990 Dec. 31 365 Telescope safes (FGE 3 bit flip); UV flood.
1991 Jan. 02 002 Mini-low-temperature decon.
1991 Jan. 26 026 De-ice decon (-82C) - failed to remove daisies.
1991 Jan. 28 028 Mini-low temperature (-20C) - removed daisies; got measles.
1991 Jan. 29 029 Low temperature decon (-15C) - removed measles.
1991 May 02 122 PSEA hardware safemode (CCDs at -35 for 80 hrs); measles.
1991 May 08 128 Hot-junction decon (+12C) - removed measles.
1991 Jul. 03 184 WIDLE turned WFC TEC off for 7 hrs (WFC reached -25C) - measles.
1991 Jul. 05 186 Flash decon (+6C) - removed measles.
1992 Feb. 03 034 Flash decon - restored UV transmission, removed scattering; left measles.
1992 Feb. 04 035 Flash decon (same as day 034) - measles still present.
1992 Mar. 03 063 Hot junction decon - measles still present.
1992 Mar. 08 068 Flash decon - measles still present.
1992 Aug. 07 220 Flash decon (CCDs +3.5C to +8.5); persistent measles remain.
1993 Aug. 02 214 Flash decon (CCDs +2 to +6C, except WF1 only -4C).