! File: 3971C.PROP ! Database: PEPDB ! Date: 20-FEB-1994:02:07:40 coverpage: title_1: WF/PC CALIBRATION UV FLOOD TEST proposal_for: CAL/WFC pi_title: DR. pi_fname: JOHN pi_mi: W. pi_lname: MACKENTY pi_inst: ST SCI pi_country: USA pi_phone: (301)338-4559 keywords_1: UV FLOOD time_crit: X ! end of coverpage abstract: line_1: In order to surpress Quantum Efficiency Hystersis (QEH) in the line_2: WFPC CCDs, the CCDS must be conditioned by flooding with Ultra- line_3: violet light. This procedure is not successful when performed line_4: on CCDs at their normal operating temperatures and therefore line_5: requires that the CCDs be warmed to approximately room temperature. line_6: The UV Flood of the WFPC CCDs is accomplished by bringing sunlight line_7: onto the CCD detectors through the WFPC's UV Light Pipe with the line_8: UV Flip Mirror in the "Flood" position. However, prior to line_9: flooding the CCDs, any contaminates which may have been deposited line_10: on the CCD field flatting windows must be removed. Failure to line_11: remove such contaminates may result in their being permanently line_12: polymerized onto these windows by the UV light and this will line_13: likely cause a permanent degradation of the WFPC's scientific line_14: performance. Therefore a staged high temperature decontamination line_15: procedure must be performed and its success verified before the line_16: UV light exposure part of the flood sequence can proceed. line_19: Revised 10/09/91 by Blacker to match SON of UV FLood line_20: Implementation Plan. ! ! end of abstract general_form_proposers: lname: WF/PC TIB/SESD inst: ST SCI ! ! end of general_form_proposers block general_form_text: question: 2 section: 0 line_1: This procedure is needed in order to accurately calibrate the instrument. The line_2: UV flooding is performed to surpress Quantum Efficiency Hysteresis in the WF/PC line_3: CCDs. The CCDs must be conditioned by flooding with ultraviolet light and is line_4: only successful when the CCDs are warmed to approximately room temperature. ! question: 3 section: 0 line_1: The UV flood of the WF/PC CCDs is accomplished by bringing sunlight onto the line_2: CCD detectors through the WF/PC's UV light pipe with the UV flip mirror in the line_3: "flood" position. However, prior to flooding the CCDs, any contaminants which line_4: may have been deposited on the CCD field flattening windows must be removed. line_5: Failure to remove such contaminants may result in their being permanently line_6: polymerized onto these windows by the UV light and this will likely cause a line_7: permanent degradation of the WF/PC's scientific performance. Therefore, a line_8: staged high temperature decontamination procedure MUST be performed and its line_9: success verified before the UV light exposure part of the flood sequence can line_10: proceed. A summary of the steps required to complete the UV flood are provided line_11: below. The detailed timing and commanding requirements are provided in the line_12: WFPC UV-FLOOD IMPLEMENTATION PLAN prepared by G. Schneider and must be used to line_13: correctly implement the flood. line_15: 1) Take UV Grism baseline series on standard A+81D266. line_16: 2) Do the first high temperature decontamination. line_17: 3) Repeat the UV Grism baseline series. Verify CCDs pre/post HT Decon by line_18: manual inspection of the baseline images. line_19: 4) REPEAT the HT Decon - UNCONDITIONALLY. Examine these images to ensure that line_20: the CCDs are clean. line_21: 5) If decision is made to proceed with flood, an NSSC-I flag will be set to line_22: override the planned "deadman" safing of the WF/PC. ! question: 3 section: 2 line_1: 6) Condition instrument for flooding and flood PC for 14 orbits. line_2: 7) Flood the WFC for 4 orbits. line_3: 8) After wait period, take bias frames and a SUNPIX image. line_4: 9) Reconfigure WF/PC for normal science operations and repeat WFC UV Grism line_5: baseline images, QEH status exposures and internal calibration exposures. line_6: 10) Repeat PC UV Grism images, QEH status exposures and internal calibation line_7: exposures. ! question: 4 section: 0 line_1: Instrument calibration ! question: 5 section: 0 line_1: Prerequisites: line_2: The UV Flood will only be performed as needed and should only be scheduled as line_3: directed by SPD. The Flood program includes two High Temperature line_4: Decontaminations which MUST be performed as requested. The detailed line_5: implementation requirements for UV flooding are documented in G. Schneider's UV line_6: FLOOD IMPLEMENTATION PLAN and should be followed. ! question: 7 section: 0 line_1: These data will be archived at ScI. ! !end of general form text general_form_address: lname: MACKENTY fname: JOHN mi: W. category: PI inst: ST SCI addr_1: 3700 SAN MARTIN DRIVE city: BALTIMORE state: MD zip: 21218 country: USA phone: (301)338-4559 ! lname: SCHNEIDER fname: GLENN category: CON inst: ST SCI addr_1: 3700 SAN MARTIN DRIVE city: BALTIMORE state: MD zip: 21218 country: USA phone: (301)338-4717 ! lname: BALZANO fname: VICKI inst: ST SCI addr_1: 3700 SAN MARTIN DRIVE city: BALTIMORE state: MD zip: 21218 country: USA phone: (301) 338-4736 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: A+81D266 name_2: GSC4547-1009 descr_1: UV SPECTROPHOTOMETRIC STANDARD pos_1: RA = 09H 21M 19.06S +/- 0.1S, pos_2: DEC = 81D 43' 28.6" +/- 1", equinox: 2000 fluxnum_1: 1 fluxval_1: V= 12.1 +/- 0.5 ! ! end of fixed targets solar_system_targets: targnum: 2 name_1: SUN descr_1: OTHER UV SOURCE lev1_1: STD = SUN, ACQ = 30 ! ! end of solar system targets ! No generic target records found exposure_logsheet: linenum: 1.000 sequence_1: DEFINE sequence_2: BASEWFC targname: A+81D266 config: WFC opmode: IMAGE aperture: W2 sp_element: G200L num_exp: 1 time_per_exp: 40S priority: 1 param_1: PRE-FLASH=YES req_1: SEQ 1-4 NON-INT; req_2: GUID TOL 0.04"/1-4; req_3: CYCLE 1 / 1-34; comment_1: SINGLE CCD READOUT - W2, GYROHOLD ! linenum: 2.000 sequence_1: DEFINE sequence_2: BASEWFC targname: A+81D266 config: WFC opmode: IMAGE aperture: W1 sp_element: G200L num_exp: 1 time_per_exp: 40S priority: 1 param_1: PRE-FLASH=NO comment_1: SINGLE CCD READOUT - W1, GYROHOLD ! linenum: 3.000 sequence_1: DEFINE sequence_2: BASEWFC targname: A+81D266 config: WFC opmode: IMAGE aperture: W3 sp_element: G200L num_exp: 1 time_per_exp: 40S priority: 1 param_1: PRE-FLASH=NO comment_1: SINGLE CCD READOUT - W3, GYROHOLD ! linenum: 4.000 sequence_1: DEFINE sequence_2: BASEWFC targname: A+81D266 config: WFC opmode: IMAGE aperture: W4 sp_element: G200L num_exp: 1 time_per_exp: 40S priority: 1 param_1: PRE-FLASH=NO comment_1: SINGLE CCD READOUT - W4, GYROHOLD ! linenum: 5.000 sequence_1: DEFINE sequence_2: BASEPC targname: A+81D266 config: PC opmode: IMAGE aperture: P6 sp_element: G200L num_exp: 1 time_per_exp: 160S priority: 1 param_1: PRE-FLASH=YES req_1: SEQ 5-8 NON-INT; req_2: GUID TOL 0.03"/5-8; comment_1: SINGLE CCD READOUT - P6, comment_2: COARSE TRACK ! linenum: 6.000 sequence_1: DEFINE sequence_2: BASEPC targname: A+81D266 config: PC opmode: IMAGE aperture: P5 sp_element: G200L num_exp: 1 time_per_exp: 160S priority: 1 param_1: PRE-FLASH=NO comment_1: SINGLE CCD READOUT - P5, comment_2: COARSE TRACK ! linenum: 7.000 sequence_1: DEFINE sequence_2: BASEPC targname: A+81D266 config: PC opmode: IMAGE aperture: P7 sp_element: G200L num_exp: 1 time_per_exp: 160S priority: 1 param_1: PRE-FLASH=NO comment_1: SINGLE CCD READOUT - P7, comment_2: COARSE TRACK ! linenum: 8.000 sequence_1: DEFINE sequence_2: BASEPC targname: A+81D266 config: PC opmode: IMAGE aperture: P8 sp_element: G200L num_exp: 1 time_per_exp: 160S priority: 1 param_1: PRE-FLASH=NO comment_1: SINGLE CCD READOUT - P8, comment_2: COARSE TRACK ! linenum: 9.000 sequence_1: USE sequence_2: BASEPC req_1: SEQ 9-34; req_2: SEQ 9-9.5 NON-INT; ! linenum: 9.500 sequence_1: USE sequence_2: BASEWFC ! linenum: 10.000 targname: DARK config: WFC opmode: DECON aperture: ALL num_exp: 1 time_per_exp: 0S priority: 1 param_1: TEMP=HIGH ! linenum: 11.000 sequence_1: USE sequence_2: BASEPC req_1: RT ANALYSIS FOR 13; req_2: DECISION TIME 320M; req_3: SEQ 11-11.5 NON-INT; ! linenum: 11.500 sequence_1: USE sequence_2: BASEWFC req_1: RT ANALYSIS FOR 13; req_2: DECISION TIME 310M; ! linenum: 12.000 targname: DARK config: WFC opmode: DECON aperture: ALL num_exp: 1 time_per_exp: 0S priority: 1 param_1: TEMP=HIGH ! linenum: 13.000 targname: DARK config: S/C opmode: DATA aperture: NONE time_per_exp: 10M priority: 1 req_1: REQUIRES UPLINK; comment_1: QASISTATE START STATE = HTDECON. comment_2: QASISTATE ENDSTATE = UVREADY. SET comment_3: FLAG 10 TO PREVENT WFPC FROM SAFING. comment_4: SPECIAL COMMANDING INSTRUCTION comment_5: (QGACTINST) - SEE IMPLEMENTATION PLAN ! linenum: 14.000 targname: ANTI-SUN config: S/C opmode: POINTING aperture: V1 num_exp: 1 time_per_exp: 1S priority: 1 param_1: CONTROL=FGS-FHST req_1: GUID TOL 0.015"; comment_1: ORIENT AND TWEAK UP POINTING VIA comment_2: COARSE TRACK. QASISTATE: START/END comment_3: = UVREADY. ! linenum: 15.000 targname: SUN config: PC opmode: UVFLOOD num_exp: 1 time_per_exp: 900M priority: 1 param_1: HEAT=0.933333 req_1: GUID TOL 0.04"/15-16; req_2: NON-INT / 15-16; comment_1: GYROHOLD. NO FHST UPDATE PRIOR TO comment_2: EXPOSURE - QBS_OBSET:FHSTFULL = 'N'. comment_3: START PC FLOOD. EXPOSE FOR 15 ORBITS comment_4: - SHUTTER OPEN. HEAT PIPE HEATER OFF comment_5: AFTER ORB14. AFTER ORB15 MECH ON,PC comment_6: TEC ON.QASISTATE:START/END=UVREADY ! linenum: 16.000 targname: SUN config: WFC opmode: UVFLOOD num_exp: 1 time_per_exp: 240M priority: 1 req_1: SEQ 16-18 NO GAP; comment_1: GYROHOLD. EXPOSE FOR 4 ORBITS. comment_2: SHUTTER OPEN CONTINUALLY. comment_3: QGACTINST: INSTR_NAME=QDUMMY comment_4: QASISTATE: START/END = UVREADY comment_5: CLOSE SHUTTER A AT END OF LAST comment_6: ALIGNMENT. SEE IMP PLAN. ! linenum: 18.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 35M priority: 1 comment_1: WFC TEC POWER ON comment_2: CRITICAL TIMING MUST BE ENFORCED. ! linenum: 19.000 targname: BIAS config: WFC opmode: IMAGE aperture: ALL sp_element: NONE num_exp: 9 time_per_exp: 0S priority: 1 param_1: SUM=2X2, req_1: AFTER 18 BY 25M +/- 5M; req_2: SEQ 19-19.5 NON-INT; req_3: SEQ 19-20.5; comment_1: MAY BE SCHEDULED IN SAA TO ACHEIVE comment_2: REQUIRED TIMING. CRITICAL TIMING comment_3: MUST BE ENFORCED. ! linenum: 19.500 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 1M priority: 1 comment_1: AUTOERASE ON. SPECIAL COMMANDING comment_2: INSTRUCTION (QGACTINST) - SEE comment_3: IMPLEMENTATION PLAN. MUST BE IN comment_4: SAME ALIGNMENT AS LINE 19. ! linenum: 20.000 targname: BIAS config: WFC opmode: IMAGE aperture: ALL sp_element: NONE num_exp: 1 time_per_exp: 0S priority: 1 param_1: SUM=2X2, req_1: AFTER 18 BY 60M +/- 5M; req_2: CALIB FOR 20.5 NOSLEW; comment_1: MAY BE SCHEDULED IN SAA TO ACHEIVE comment_2: REQUIRED TIMING. CRITICAL TIMING comment_3: MUST BE ENFORCED. ! linenum: 20.500 targname: SUN config: WFC opmode: UVOBS aperture: ALL sp_element: F122M,F230W num_exp: 1 time_per_exp: 0.11S priority: 1 req_1: GUID TOL 0.04"; req_2: AFTER 20 BY 5M +/-5M; comment_1: GYROHOLD. DO IMMEDIATELY AFTER comment_2: BIAS FRAME ON LINE 20. ! linenum: 21.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 5M priority: 1 comment_1: RECONFIGURE WFPC POST FLOOD. OPEN A&B comment_2: SHUTTERS, CLEAR UV MIRROR, CCD HEAT ON comment_3: CLOSE A SHUTTER. SPECIAL COMMANDING comment_4: INSTRUCTION (QGACTINST) - SEE comment_5: IMPLEMENTATION PLAN. ! linenum: 22.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 1M priority: 1 req_1: AFTER 21 BY 46M +/- 5M; comment_1: CCD HEATERS OFF 100 MINUTES AFTER TEC comment_2: TURN ON (LINE 19). SPECIAL COMMANDING comment_3: INSTRUCTION (QGACTINST) - SEE comment_4: IMPLEMENTATION PLAN. ! linenum: 23.000 targname: A+81D266 config: S/C opmode: POINTING aperture: V1 num_exp: 1 time_per_exp: 1S priority: 1 req_1: GUID TOL 0.015"; req_2: SEQ 23-34 NOGAP; req_3: SEQ 23-27 NON-INT; comment_1: ORIENT AND TWEAK UP POINTING VIA comment_2: COARSE TRACK. ! linenum: 23.500 sequence_1: USE sequence_2: BASEWFC req_1: AFTER 22 BY 105M +/-5M; comment_1: CRITICAL TIMING MUST BE ENFORCED. ! linenum: 24.000 targname: A+81D266 config: WFC opmode: IMAGE aperture: W1 sp_element: F555W num_exp: 1 time_per_exp: 5S priority: 1 param_1: PRE-FLASH=YES, param_2: READ=NO, req_1: SEQ 24-27 NON-INT; req_2: GUID TOL 0.04"/24-27; comment_1: GYROHOLD. ! linenum: 25.000 targname: A+81D266 config: WFC opmode: IMAGE aperture: W2 sp_element: F555W num_exp: 1 time_per_exp: 5S priority: 1 param_1: PRE-FLASH=NO, param_2: READ=NO, comment_1: GYROHOLD. ! linenum: 26.000 targname: A+81D266 config: WFC opmode: IMAGE aperture: W3 sp_element: F555W num_exp: 1 time_per_exp: 5S priority: 1 param_1: PRE-FLASH=NO, param_2: READ=NO, comment_1: GYROHOLD. ! linenum: 27.000 targname: A+81D266 config: WFC opmode: IMAGE aperture: W4 sp_element: F555W num_exp: 1 time_per_exp: 5S priority: 1 param_1: PRE-FLASH=NO, param_2: READ=YES, comment_1: GYROHOLD. ! linenum: 28.000 targname: INTFLAT config: WFC opmode: IMAGE aperture: ALL sp_element: F555W num_exp: 1 time_per_exp: 7S priority: 1 param_1: PRE-FLASH=NO, ! linenum: 29.000 sequence_1: USE sequence_2: BASEPC ! linenum: 30.000 targname: A+81D266 config: PC opmode: IMAGE aperture: P5 sp_element: F555W num_exp: 1 time_per_exp: 25S priority: 1 param_1: PRE-FLASH=YES, param_2: READ=NO, req_1: SEQ 30-33 NON-INT; ! linenum: 31.000 targname: A+81D266 config: PC opmode: IMAGE aperture: P6 sp_element: F555W num_exp: 1 time_per_exp: 25S priority: 1 param_1: PRE-FLASH=NO, param_2: READ=NO, ! linenum: 32.000 targname: A+81D266 config: PC opmode: IMAGE aperture: P7 sp_element: F555W num_exp: 1 time_per_exp: 25S priority: 1 param_1: PRE-FLASH=NO, param_2: READ=NO, ! linenum: 33.000 targname: A+81D266 config: PC opmode: IMAGE aperture: P8 sp_element: F555W num_exp: 1 time_per_exp: 25S priority: 1 param_1: PRE-FLASH=NO, param_2: READ=YES, ! linenum: 34.000 targname: INTFLAT config: PC opmode: IMAGE aperture: ALL sp_element: F555W num_exp: 1 time_per_exp: 35S priority: 1 param_1: PRE-FLASH=NO, ! ! end of exposure logsheet ! No scan data records found