HUBBLE SPACE TELESCOPE DAILY REPORT # 3122 PERIOD COVERED: 0000Z (UTC) 05/21/02 - 0000Z (UTC) 05/22/02 OBSERVATIONS SCHEDULED AND ACCOMPLISHED: NICMOS 8790 NICMOS Post-SAA calibration - CR Persistence Part 1. A new procedure proposed to alleviate the CR-persistence problem of NICMOS. Dark frames will be obtained immediately upon exiting the SAA contour 23, and everytime a NICMOS exposure is scheduled within 50 minutes of coming out of the SAA. The darks will be obtained in parallel in all three NICMOS Cameras. The POST-SAA darks will be non-standard reference files available to users with a USEAFTER date/time mark. STIS/CCD 8902 Dark Monitor-Part 2. The Space Telescope Imaging Spectrograph (CCD) was used to monitor the darks. STIS/CCD 8904 Bias Monitor-Part 2. The Space Telescope Imaging Spectrograph (CCD) was used to monitor the bias in the 1x1, 1x2, 2x1, and 2x2 bin settings at gain=1, and 1x1 at gain = 4 in order to build up high-S/N superbiases and track the evolution of hot columns. WFPC2 8938 WFPC2 CYCLE 9 SUPPLEMENTAL DARKS pt3/3. characterizing the evolution of hot pixels. NICMOS 8982 NICMOS Plate Scale astrometric solution will also be found NICMOS 8989 NICMOS Thermal Background Observations in NICMOS Camera 3 in the filters F110W, F175W, F240M, F222M, F160W will be obtained at a variety of spacecraft attitudes to characterize the thermal background light from HST+NCS+Instrument which reaches the NICMOS focal plane. STIS/CCD 9066 Closing in on the Hydrogen Reionization Edge of the Universe. The Space Telescope Imaging Spectrograph (CCD) was used in parallel constrain the Hydrogen reionization edge in emission that marks the transition from a neutral to a fully ionized IGM at a predicted redshifts. STIS/CCD/MA1 9154 Spatial Distribution Of The Gas Inside The Beta Pic Disk. The Space Telescope Imaging Spectrograph (CCD and MA1) was used to investigate the gas and dust disk surrounding Beta Pictoris that will give clues to the understanding of the late stages of planetary formation. NICMOS 9269 NICMOS Parallel Thermal Background NICMOS Camera 3 pure parallel exposures in the F222M filter will be obtained for the entire duration of SMOV to establish the stability of the HST+NCS+Instrument thermal emission. STIS/CCD 9317 Pure Parallel Imaging Program: Cycle 10. The Space Telescope Imaging Spectrograph (CCD) was used to perform the default archival pure parallel program for STIS during cycle 10. WF/PC-2 9318 POMS Test Proposal: WFII Parallel Archive Proposal Continuation. The WF/PC-2 was used to perform the generic target version of the WFPC2 Archival Pure Parallel program. The program was used to take parallel images of random areas of the sky, following the recommendations of the Parallels Working Group. WF/PC-2 9319 POMS Test Proposal: WFII Backup Parallel Archive Proposal II. The WF/PC-2 was used to execute a POMS test proposal, designed to simulate future scientific plans. ACS/WFC/HRC 9566 CCD Hot Pixel Annealing. The Advanced Camera for Surveys (WFC and HRC) was used to perform hot pixel annealing that will be performed once per month. The CCD TECs will be turned off and heaters will be activated to bring the WFC detector temperature to about +10C. The HRC temperature will reach about 30C. This state will be held for approximately 24 hours, after which the heaters are turned off, the TECs turned on, and the CCDs returned to normal operating condition. FLIGHT OPERATIONS SUMMARY: HSTARs: 8657 - Ephemeris Load Generation Fails Accuracy Check @140/1200z 8658 - STIS Ivps S/C Voltage side 2 OOL Low @142/1036z COMPLETED OPS REQs: 16776-0 Engineering Record for Battery Capacity @142/1800z 16777-1; Battery 5 discharge start @ 142/0032z OPS NOTES EXECUTED: 1006-2 AXIAL Link2 Temp Lim Chg @1421826z SCHEDULED SUCCESSFUL FAILURE TIMES FGS GSacq 5 5 FGS REacq 9 9 FHST Update 8 8 LOSS of LOCK None SIGNIFICANT EVENTS: Continuation of Servicing Mission Orbital Verification and the gradual resumption of normal science observations and calibrations.