6165( 3) - 10/16/95 13:59 - [ 1] PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID: 6165 Version: 3 Check-in Date: ********** 1.Proposal Title: FOS CYCLE 5: DISCRIMINATOR TEST ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Cycle CAL/FOS 5 ------------------------------------------------------------------------------------ 5. Investigators Contact? PI: MARTIN, STEPHAN ST SCI CoI: CHRISTENSEN, JENNIFER ST SCI N CoI: Koratkar, Anuradha ST SCI N CoI: Keyes, Charles STSCI N CoI: Hayes, Jeffery STSCI N CoI: Dahlem, Micheal STSCI N ------------------------------------------------------------------------------------ 6. Abstract The optimal discriminator settings were determined in Cycle 4. Because both the noise and gain are known to be temperature sensitive, it is likely that some fraction of the channels will experience some change in their optimal discriminator settings on orbit. The discriminator/noise test should be run once in cycle 5 to verify the stability of those settings. The FOS high voltage will be brought to approximately one-half the nominal operating voltage (12750 KV), with the REFDAC=250 and the trim focus current at 0. A 60s wait will allow the high voltage to stabilize. The command block YTDN will be run, with the INTFLAT as the source. Total time is xxx hours NON-PRIME. ------------------------------------------------------------------------------------ 6165( 3) - 10/16/95 13:59 - [ 2] Observations Description ------------------------ The FOS high voltage will be brought to approximately one-half the nominal operating voltage (12750 KV), with the REFDAC=250 and the trim focus current at 0. A 60S wait will allow the high voltage to stabilize. The command block YTDN will be run, with the INTFLAT as the source, for the following parameters: FOS/RD DAC values 100-255 1 unit per step 10s exposure time 26M total exposure time 13M total overhead FOS/BL DAC values 100-255 1 unit per step 60s exposure time 91M total exposure time 13M total overhead The exposure times listed above are based on running command blocks YSHDLV (8:37) and YSHVON (1:41). It is advisable that this test be run intermittently throughout the mission. Disable overlight protection. All observations are internal. Real Time Justification ----------------------- Calibration Justification ------------------------- Additional Comments ------------------- ------------------------------------------------------------------------------------ Data Distribution Media: 8MM Blocking Factor: 10 Ship To: PI_Address Ship Via: UPS Email: , ------------------------------------------------------------------------------------ 6165( 3) - 10/16/95 13:59 - [ 3] Visit: 01 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 INTFLAT FOS/RD IMAGE 4.3 MIRROR Y-SPACE=0, Y- 1 1560S SIZE=1, COMB=NO, SUB- STEP=1,DHV- DAC=12.74, Comments: TRIM FOCUS CURRENT=0. TURN OFF OVERLIGHT; DISCSTART=101, PERFORM DISCRIMINATOR OBSERVATIONS AT ONLY DREF- ODD VALUED THRESHOLDS. START AT DISC 101. DAC=49.12,DHV- DELAY=60 ------------------------------------------------------------------------------------------------------------------------------------ 6165( 3) - 10/16/95 13:59 - [ 4] Visit: 02 Visit Requirements: AFTER 01 BY 12H TO 36H On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 INTFLAT FOS/RD IMAGE 4.3 MIRROR Y-SPACE=0, Y- 1 1560S SIZE=1, COMB=NO, SUB- STEP=1, DHV- DAC=12.74, Comments: TRIM FOCUS CURRENT=0. TURN OFF OVERLIGHT; DISCSTART=100, PERFORM DISCRIMINATOR OBSERVATIONS AT ONLY DREF- EVEN VALUED THRESHOLDS. START AT DISC 100. DAC=49.12,DHV- DELAY=60 ------------------------------------------------------------------------------------------------------------------------------------ 6165( 3) - 10/16/95 13:59 - [ 5] Visit: 03 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 INTFLAT FOS/BL IMAGE 4.3 MIRROR Y-SPACE=0, Y- 1 2730S SIZE=1, COMB=NO, SUB- STEP=1,DHV- DAC=12.74, Comments: TRIM FOCUS CURRENT=0. TURN OFF OVERLIGHT; DISCSTART=101, PERFORM DISCRIMINATOR OBSERVATIONS AT ONLY DREF-DAC=49.12, ODD VALUED THRESHOLDS. DHV-DELAY=60 ------------------------------------------------------------------------------------------------------------------------------------ 6165( 3) - 10/16/95 13:59 - [ 6] Visit: 04 Visit Requirements: AFTER 03 BY 12H TO 36H On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 INTFLAT FOS/BL IMAGE 4.3 MIRROR Y-SPACE=0, Y- 1 2730S SIZE=1, COMB=NO, SUB- STEP=1, DHV- DAC=12.74, Comments: TRIM FOCUS CURRENT=0. TURN OFF OVERLIGHT; DISCSTART=100, PERFORM DISCRIMINATOR OBSERVATIONS AT ONLY DREF-DAC=49.1, EVEN VALUED THRESHOLDS. DHV-DELAY=60 ------------------------------------------------------------------------------------------------------------------------------------ 6165( 3) - 10/16/95 13:59 - [ 7] Summary Form for Proposal 6165 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations FOS/RD FOS/BL ------------------------------------------------------------------------------------------------------------------------------------ Opmodes IMAGE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters Y-SPACE=0 Y-SIZE=1 COMB=NO SUB-STEP=1 DHV-DAC=12.74 DISCSTART=101 DREF-DAC=49.12 DHV-DELAY=60 DISCSTART=100 DREF-DAC=49.1 ------------------------------------------------------------------------------------------------------------------------------------ Proposal Category CAL/FOS ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01 BY 12H TO 36H AFTER 03 BY 12H TO 36H ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names INTFLAT ------------------------------------------------------------------------------------------------------------------------------------