16357( 2) - 01-Sep-2020 19:57:59 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 16357 Version: 2 Check-in Time: 01-Sep-2020 19:57:59 STScI Edit Number: 0 Title STIS MAMA Recovery from Anomalous Shutdown ------------------------------------------------------------------------------------ Type Cycle CAL/STIS 28 ------------------------------------------------------------------------------------ Investigators Contact? PI: Mr. Thomas Wheeler Space Telescope Science Institute Y CoI: Dr. Alan D. Welty Space Telescope Science Institute N ------------------------------------------------------------------------------------ Abstract This proposal is designed to permit a safe and orderly recovery of the STIS FUV MAMA or NUV MAMA detector after an anomalous shutdown. This is accomplished by using slower-than-normal MCP high-voltage ramp-ups and diagnostics. Anomalous shutdowns can occur because of bright object violations which trigger the Global Hardware Monitor or the Global Software Monitor. Anomalous shutdowns can also occur because of MAMA hardware anomalies or failures. The cause of the shutdown should be thoroughly investigated and understood prior to recovery. Twenty-four hour wait intervals are required after each test for MCP gas desorption and data analysis. Event flags are used to prevent inadvertent MAMA usage. The recovery procedure consists of three separate tests (i.e. visits) to check the MAMA's health after an anomalous shutdown: 1) signal processing electronics check, 2) slow, intermediate voltage high-voltage ramp-up, and 3) ramp-up to full operating voltage followed by a fold analysis test (See STIS ISR 98-02R). Each must be successfully completed before proceeding onto the next. This proposal executes the same steps as Cycle 27, Proposal 15755. ------------------------------------------------------------------------------------ Observations Description ------------------------ Anomalous shutdowns can occur because of bright object violations which trigger the Global Hardware Monitor or the Global Software Monitor. Anomalous shutdowns can also occur because of MAMA hardware anomalies or failures. The cause of the shutdown should be thoroughly investigated and understood prior to recovery. Twenty-four hour wait intervals are required after each test for MCP gas desorption and data analysis. Event flags are used to prevent inadvertent MAMA usage. The recovery procedure consists of three separate tests (i.e. visits) to check the MAMA's health after an anomalous shutdown. Each must be successfully completed before proceeding onto the next. This proposal executes the same steps as Cycle 27 proposal 15755. (1) Signal processing electronics check. The amplifier threshold voltage is reduced from 0.48V to 0.28V; ORCOUNTS rates are monitored (MAMA HV is off during this procedure). (2) Slow, intermediate voltage high-voltage ramp-up. The MCP HV is slow-ramped to a voltage 300V below nominal. A dark time-tag exposure is taken during this 16357( 2) - 01-Sep-2020 19:57:59 - [ 2] partial ramp. A second dark accum exposure is taken where the event counter is cycled through W, X, Y, Z, OR, EV and VE. (3) Ramp-up to nominal operating voltage. As before, a dark time-tag exposure is taken during this ramp-up. A second dark accum exposure is taken where the event counter is cycled through W, X, Y, Z, OR, EV and VE. This is followed by and fold analysis test (See STIS ISR 98-02R) . In order for a recovery to be initiated the following conditions have to have been met: (1) MAMA HV shut down anomalously. (2) A minimum of 24 hours must have elapsed since the initial shutdown and the intermediate HV ramp-up (step two above). (3) The STIS external shutter must be closed. Visits 01 to 03 are for the anomalous recovery of the FUV-MAMA and visits 04 to 06 are for the anomalous recovery of the NUV-MAMA. Visits 03 and 06 now contain the fold analysis test for the FUV and NUV, respectively. --------- Additional Comments ---------- This is not a requirement but it is desirable to have real-time engineering telemetry (MA return) during the execution of the first three visits. Bright Object Protection Considerations. During the execution of the fold analysis (Visit 03 and 06) some anode folds are disabled. Consequently, the OR counter does not provide a true representation of the OR count and so the Software Global Monitor (SGM) does not trigger until the enabled folds provide enough counts to the OR counter to trigger the SGM's threshold. To compensate, while the fold analysis is running the SGM threshold is reduced to 150, 000 counts (130, 000 counts are used due to ground system restrictions) in a 1.0 second interval, from its nominal value of 77, 000 counts in a 0.1 second interval. This test should only be run with the STIS external shutter closed. Special Commanding is used in this proposal. ------------------------------------------------------------------------------------ 16357( 2) - 01-Sep-2020 19:57:59 - [ 3] Visit: 01 (FUV LV Electronics Check) Visit Requirements: ON HOLD ; PARALLEL On Hold Comments: In order for an anomalous recovery to be initiated the following conditions have to have been met: (1) MAMA HV shut down anomalously (2) A minimum of 24 hours must have elapsed since the initial shutdown and the intermediate HV ramp-up. (3) The STIS external shutter must be closed. Additional Comments: FUV MAMA recovery from anomalous shutdown signal processing electronics checkout procedure. Goal: verify electronics work properly. Refer to ISR STIS 98-03. Must clear event flag 2 for the commanding to execute. Since no high voltage is involved, this visit may be scheduled within the 24-hour period following an anomalous HV shutdown. There are no exposures taken in this visit; only engineering telemetry is acquired. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK S/C DATA NONE 1 3600.0 S SAA CONTOUR 25; SPEC COM (3600 S) INSTR EOHDTLV1_1; QASISTATES STIS SI OPERATE OPERATE; QASISTATES STIS MA1 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD; SAME ALIGNMENT 1-3 Comments: Switch on LV power supply. Enable Software global monitor SGM Threshold = 77000 SGM Integration period = 0.1 secs. Set amplifier threshold to default (0.48V); collect a minimum of 30 telemetry points; set amplifier threshold to 0.28V; collect a minimum of 300 telemetry points. ------------------------------------------------------------------------------------------------------------------------------------ 2 DARK S/C DATA NONE 1 50.0 S (50 SPEC COM INSTR ROLVTHDM1 S) Comments: Transition to Hold. ------------------------------------------------------------------------------------------------------------------------------------ 3 DARK S/C DATA NONE 1 10.0 S (10 SPEC COM INSTR EOFLAG2 S) Comments: Set event flag 2. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 S/C DATA NONE none none none none 1 N/A DARK 2 S/C DATA NONE none none none none 1 N/A DARK 3 S/C DATA NONE none none none none 1 N/A 16357( 2) - 01-Sep-2020 19:57:59 - [ 4] Visit: 02 (FUV Intermediate Voltage Ramp) Visit Requirements: AFTER 01 BY 1.0 D TO 30.0 D; PARALLEL On Hold Comments: Additional Comments: Do not schedule within 24 hours of the anomalous shutdown. Event flag 2 must be clear for this MAMA commanding to execute. Exposures 1-3: FUV Partial HV ramp-up + checkout procedure. Goals: 1) Ramp FUV MAMA to intermediate MCP & Field voltage 2) obtain dark count telemetry. Refer to ISR STIS 98-03. Exposure 4: Transition the FUV MAMA to Hold (off) and set Event Flag 2. To allow time to analyze the data and clear flag 2, visit 03 should not be scheduled less than 24 hours after this visit. NO OTHER FUV MAMA OBSERVATIONS SHOULD BE SCHEDULED UNTIL AT LEAST 24 HOURS AFTER VISIT 03. Set qasi_states for all alignments to STIS/MA1=HOLD/HOLD and OMCE=HOLD/HOLD and STIS=OBSERVE/OBSERVE. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK S/C DATA NONE 1 120.0 S SAA CONTOUR 25; SPEC COM (120 S) INSTR EOHDTLV1_2; QASISTATES STIS SI OPERATE OBSERVE; QASISTATES STIS MA1 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD; SEQ 1-4 NON-INT Comments: Switch on LV power supply. Transition SI Operate to Observe. Must clear event flag 2 for the commanding to execute. ------------------------------------------------------------------------------------------------------------------------------------ 2 DARK STIS/FUV TIME-TA DEF DEF BUFFER-TIME=1800 1 1840.0 S SPEC COM INSTR -MAMA G (1840 S) EOLVTHV1_2; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA1 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: Incrementally ramp up the detector to 300 V below its nominal microchannel plate operating voltage. Set Software Global Monitor to value 1000 counts/sec, SGM Threshold = 100, SGM Integration period = 0.1 secs. Collect minimum of 5 telemetry samples at each voltage. For requirements refer to ISR STIS 98-03. ------------------------------------------------------------------------------------------------------------------------------------ 16357( 2) - 01-Sep-2020 19:57:59 - [ 5] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 3 DARK STIS/FUV ACCUM DEF DEF 1 480.0 S SPEC COM INSTR -MAMA (480 S) EOCYCLE1_2; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA1 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: Special commanding required. During the accum: Set Software Global monitor (SGM) SGM Threshold = 200, SGM Integration period = 0.1 secs. Collect minimum 5 samples W events. Collect minimum 5 samples X events. Collect minimum 5 samples Y events. Collect minimum 5 samples Z events. Collect minimum 5 samples OR events. Collect minimum 5 samples EV events. Collect minimum 5 samples VE events. ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK S/C DATA NONE 1 480.0 S SAA CONTOUR 25; SPEC COM (480 S) INSTR EOHVTHD1_2; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA1 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: Transition to Low Voltage. Transition to Hold. Set Event Flag 2. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 S/C DATA NONE none none none none 1 N/A DARK 2 STIS/FUV TIME-TA DEF DEF none none none none 1 N/A -MAMA G DARK 3 STIS/FUV ACCUM DEF DEF none none none none 1 N/A -MAMA DARK 4 S/C DATA NONE none none none none 1 N/A 16357( 2) - 01-Sep-2020 19:57:59 - [ 6] Visit: 03 (FUV Full HV Ramp + Fold Test) Visit Requirements: AFTER 02 BY 1.0 D TO 30.0 D; PARALLEL On Hold Comments: Additional Comments: Event flag 2 must be clear for this MAMA commanding to execute. Exposures 1-3: FUV Full HV ramp-up + checkout procedure. Goals: 1) Ramp FUV MAMA to full MCP & Field voltage 2) obtain dark count telemetry. Refer to ISR STIS 98-03. Exposures 4-6:FUV MAMA fold analysis. Exposure 7: Transition the FUV MAMA to Hold (off) and set Event Flag 2. To allow time to analyze the fold data and clear flag 2, NO OTHER FUV MAMA OBSERVATIONS SHOULD BE SCHEDULED WITHIN 24 HOURS AFTER THIS VISIT. Set qasi_states for all alignments to STIS/MA1=HOLD/HOLD and OMCE=HOLD/HOLD and STIS=OBSERVE/OBSERVE. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK S/C DATA NONE 1 120.0 S SAA CONTOUR 25; SPEC COM (120 S) INSTR EOHDTLV1_3; QASISTATES STIS SI OPERATE OBSERVE; QASISTATES STIS MA1 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD; SEQ 1-7 NON-INT Comments: Switch on LV power supply. This procedure uses special commanding. Must clear event flag 2 for the commanding to execute. ------------------------------------------------------------------------------------------------------------------------------------ 2 DARK STIS/FUV TIME-TA DEF DEF BUFFER-TIME=1800 1 3350.0 S SPEC COM INSTR -MAMA G (3350 S) EOLVTHV1_3; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA1 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: Incrementally ramp up the detector up to its full operating voltage. Set Software Global Monitor SGM Threshold = 100, SGM Integration period = 0.1 secs. Collect minimum of 5 telemetry samples at each voltage. For requirements refer to TIR STIS 98-03. ------------------------------------------------------------------------------------------------------------------------------------ 16357( 2) - 01-Sep-2020 19:57:59 - [ 7] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 3 DARK STIS/FUV ACCUM DEF DEF 1 480.0 S SPEC COM INSTR -MAMA (480 S) EOCYCLE1_3; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA1 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: FUV-MAMA (M1) Set Software Global monitor (SGM) SGM Threshold = 200 SGM, Integration period = 0.1 secs. Collect 5 samples W dark events. Collect 5 samples X dark events. Collect 5 samples Y dark events. Collect 5 samples Z dark events. Collect 5 samples OR dark events. Collect 5 samples EV dark events. Collect 5 samples VE dark events. This exposure should be followed by immediately a fold analysis. ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK S/C DATA NONE 1 240.0 S SAA CONTOUR 25; SPEC COM (240 S) INSTR EOFOLDSET1; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA1 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: Set Software Global monitor (SGM) SGM Threshold = 15000 SGM, Integration period = 0.1 secs. Configure mechanisms Turn on HITM2 lamp at 10 mA current. ------------------------------------------------------------------------------------------------------------------------------------ 5 DARK STIS/FUV ACCUM DEF DEF 1 300.0 S NEW ALIGNMENT; -MAMA (300 S) QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA1 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: FUV-MAMA (M1) Flat field details Aperture F25ND3 Sp_Element MIRROR. This image is a flat field exposure with the HITM2 lamp which uses S/C, so that the lamp remains on at the end of the exposure. ------------------------------------------------------------------------------------------------------------------------------------ 16357( 2) - 01-Sep-2020 19:57:59 - [ 8] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 DARK S/C DATA NONE 1 2300.0 S SAA CONTOUR 25; SPEC COM (2300 S) INSTR EOFOLDTST1; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA1 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: FUV-MAMA (M1) Flat field details Aperture F25ND3 Sp_Element MIRROR Set Software Global monitor (SGM SGM Threshold = 130000 SGM Integration period = 1.0 secs (a) Collect counter samples during flat field illumination Collect 5 samples X events Collect 5 samples Y events Collect 5 samples Z events Collect 5 samples W events Collect 5 samples VE events Collect 5 samples EV events Collect 5 samples OR events (b) Disable MAMA Folds: C2, C3, C4, C5, C6, R2, R3, R4, R5, R6 (c) Conduct fold analysis Collect 5 samples VE for following 19 combinations of MAMA folds: (1) Enabled: C2, R2; Disabled: C3, C4, C5, C6, R3, R4, R5, R6 (2) Enabled: C2, R3; Disabled: C3, C4, C5, C6, R2, R4, R5, R6 (3) Enabled: C3, R2; Disabled: C2, C4, C5, C6, R3, R4, R5, R6 (4) Enabled: C2, R4; Disabled: C3, C4, C5, C6, R2, R3, R5, R6 (5) Enabled: C3, R3; Disabled: C2, C4, C5, C6, R2, R4, R5, R6 (6) Enabled: C4, R2; Disabled: C2, C3, C5, C6, R3, R4, R5, R6 (7) Enabled: C3, R4; Disabled: C 2, C4, C5, C6, R2, R3, R5, R6 (8) Enabled: C4, R3; Disabled: C2, C3, C5, C6, R2, R4, R5, R6 (9) Enabled: C3, R5; Disabled: C2, C4, C5, C6, R2, R3, R4, R6 (10)Enabled: C4, R4; Disabled: C2, C3, C5, C6, R2, R3, R5, R6 (11) Enabled: C5, R3; Disabled: C2, C3, C4, C6, R2, R4, R5, R6 (12) Enabled: C4, R5; Disabled: C2, C3, C5, C6, R2, R3, R4, R6 (13) Enabled: C5, R4; Disabled: C2, C3, C4, C6, R2, R3, R5, R6 (14) Enabled: C4, R6; Disabled: C2, C3, C5, C6, R2, R3, R4, R5 (15) Enabled: C5, R5; Disabled: C2, C3, C4, C6, R2, R3, R4, R6 (16) Enabled: C6, R4; Disabled: C2, C3, C4, C5, R2, R3, R5, R6 (17) Enabled: C5, R6; Disabled: C2, C3, C4, C6, R2, R3, R4, R5 (18) Enabled: C6, R5; Disabled: C2, C3, C4, C5, R2, R3, R4, R6 (19) Enabled: C6, R6; Disabled: C2, C3, C4, C5, R2, R3, R4, R5 (d) Enable MAMA folds C2, C3, C4, C5, C6, R2, R3, R4, R5, R6 at completion of exposure. (e) Check lamp stability by checking EV and VE Collect 5 samples events (EV) to check lamp stability Collect 5 samples Valid Events (VE) to check lamp s tability (f) Turn off HITM2 lamp (g) Collect event counter data for detector dark count rate Collect 5 samples X dark events Collect 5 samples Y dark events Collect 5 samples Z dark events Collect 5 samples W dark events Collect 5 samples VE dark events Collect 5 samples EV dark events Collect 5 samples OR dark events (h) At completion of procedure reset SGM to nominal operating level. 16357( 2) - 01-Sep-2020 19:57:59 - [ 9] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 7 DARK S/C DATA NONE 1 480.0 S SAA CONTOUR 25; SPEC COM (480 S) INSTR EOHVTHD1_3; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA1 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: Transition to Low Voltage. Transition to Hold. Set Event Flag 2. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 S/C DATA NONE none none none none 1 N/A DARK 2 STIS/FUV TIME-TA DEF DEF none none none none 1 N/A -MAMA G DARK 3 STIS/FUV ACCUM DEF DEF none none none none 1 N/A -MAMA DARK 4 S/C DATA NONE none none none none 1 N/A DARK 5 STIS/FUV ACCUM DEF DEF none none none none 1 N/A -MAMA DARK 6 S/C DATA NONE none none none none 1 N/A DARK 7 S/C DATA NONE none none none none 2 N/A 16357( 2) - 01-Sep-2020 19:57:59 - [ 10] Visit: 04 (NUV LV Electronics Check) Visit Requirements: ON HOLD ; PARALLEL On Hold Comments: In order for an anomalous recovery to be initiated the following conditions have to have been met: (1) MAMA HV shut down anomalously (2) A minimum of 24 hours must have elapsed since the initial shutdown and the intermediate HV ramp-up. (3) The STIS external shutter must be closed. Additional Comments: NUV MAMA recovery from anomalous shutdown signal processing electronics checkout procedure. Goal: verify electronics work properly. Refer to ISR STIS 98-03. Must clear event flag 3 for the commanding to execute. Since no high voltage is involved, this visit may be scheduled within the 24 hour period following an anomalous HV shutdown. There are no exposures taken in this visit; only engineering telemetry is required. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK S/C DATA NONE 1 3600.0 S SAA CONTOUR 25; SPEC COM (3600 S) INSTR EOHDTLV2_1; QASISTATES STIS SI OPERATE OPERATE; QASISTATES STIS MA2 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD; SAME ALIGNMENT 1-3 Comments: Switch on LV power supply. Enable Software global monitor SGM Threshold = 77000, SGM Integration period = 0.1 secs. Set amplifier threshold to default (0.48V); collect a minimum of 30 telemetry points. Set amplifier threshold to 0.28V; collect a minimum of 300 telemetry points. ------------------------------------------------------------------------------------------------------------------------------------ 2 DARK S/C DATA NONE 1 50.0 S (50 SPEC COM INSTR ROLVTHDM2 S) Comments: Transition to hold. ------------------------------------------------------------------------------------------------------------------------------------ 3 DARK S/C DATA NONE 1 10.0 S (10 SPEC COM INSTR EOFLAG3 S) Comments: Set event flag 3. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 S/C DATA NONE none none none none 1 N/A DARK 2 S/C DATA NONE none none none none 1 N/A DARK 3 S/C DATA NONE none none none none 1 N/A 16357( 2) - 01-Sep-2020 19:57:59 - [ 11] Visit: 05 (NUV Intermediate Voltage Ramp) Visit Requirements: AFTER 04 BY 1.0 D TO 30.0 D; PARALLEL On Hold Comments: Additional Comments: Do not schedule within 24 hours of the anomalous shutdown. Event flag 3 must be clear for this MAMA commanding to execute. Exposures 1-3: FUV Partial HV ramp-up + checkout procedure. Goals: 1) Ramp NUV MAMA to intermediate MCP & PC voltage 2) obtain dark count telemetry. Refer to ISR STIS 98-03. Exposure 4: Transition the NUV MAMA to Hold (off) and set Event Flag 3. To allow time to analyze the data and clear flag 3, visit 06 should not be scheduled less than 24 hours after this visit. NO OTHER NUV MAMA OBSERVATIONS SHOULD BE SCHEDULED UNTIL AT LEAST 24 HOURS AFTER VISIT 06. Set qasi_states for all alignments to STIS/MA2=HOLD/HOLD and OMCE=HOLD/HOLD and STIS=OBSERVE/OBSERVE. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK S/C DATA NONE 1 120.0 S SAA CONTOUR 25; SPEC COM (120 S) INSTR EOHDTLV2_2; QASISTATES STIS SI OPERATE OBSERVE; QASISTATES STIS MA2 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD; SEQ 1-4 NON-INT Comments: Switch on LV power supply. Transition SI Operate to Observe. Must clear event flag 3 for the commanding to execute. ------------------------------------------------------------------------------------------------------------------------------------ 2 DARK STIS/NUV TIME-TA DEF DEF BUFFER-TIME=1800 1 2070.0 S SPEC COM INSTR -MAMA G (2070 S) EOLVTHV2_2; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA2 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: Incrementally ramp up the detector up to 300 V below its nominal microchannel plate operating voltage. A -50 volt ramp-up of the photocathode (PC) voltage is also required for the detection of photons. Set Software Global Monitor to value 10000 counts/sec, SGM Threshold = 1000, SGM Integration period = 0.1 secs. Collect minimum of 4 telemetry samples at each voltage. ------------------------------------------------------------------------------------------------------------------------------------ 16357( 2) - 01-Sep-2020 19:57:59 - [ 12] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 3 DARK STIS/NUV ACCUM DEF DEF 1 480.0 S SPEC COM INSTR -MAMA (480 S) EOCYCLE2_2; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA2 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: Special commanding required. During the accum: Set Software Global monitor (SGM) SGM Threshold = 1000, SGM Integration period = 0.1 secs. Collect minimum 5 samples W events. Collect minimum 5 samples X events. Collect minimum 5 samples Y events. Collect minimum 5 samples Z events. Collect minimum 5 samples OR events. Collect minimum 5 samples EV events. Collect minimum 5 samples VE events. ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK S/C DATA NONE 1 420.0 S SAA CONTOUR 25; SPEC COM (420 S) INSTR EOHVTHD2_2; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA2 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: Transition to Low Voltage. Transition to Hold. Set Event Flag 3. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 S/C DATA NONE none none none none 1 N/A DARK 2 STIS/NUV TIME-TA DEF DEF none none none none 1 N/A -MAMA G DARK 3 STIS/NUV ACCUM DEF DEF none none none none 1 N/A -MAMA DARK 4 S/C DATA NONE none none none none 1 N/A 16357( 2) - 01-Sep-2020 19:57:59 - [ 13] Visit: 06 (NUV Full HV Ramp + Fold Test) Visit Requirements: AFTER 05 BY 1.0 D TO 30.0 D; PARALLEL On Hold Comments: Additional Comments: Event flag 2 must be clear for this MAMA commanding to execute. Exposures 1-3: NUV Full HV ramp-up + checkout procedure. Goal: 1) Ramp NUV MAMA to full MCP & PC voltage 2) obtain dark count telemetry. Refer to TIR STIS 98-03. Exposures 4-6:NUV MAMA fold analysis. Exposure 7: Transition the NUV MAMA to Hold (off) and set Event Flag 3. To allow time to analyze the fold data and clear flag 3, NO OTHER NUV MAMA OBSERVATIONS SHOULD BE SCHEDULED WITHIN 24 HOURS AFTER THIS VISIT. Set qasi_states for all alignments to STIS/MA2=HOLD/HOLD and OMCE=HOLD/HOLD and STIS=OBSERVE/OBSERVE. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 DARK S/C DATA NONE 1 120.0 S SAA CONTOUR 25; SPEC COM (120 S) INSTR EOHDTLV2_3; QASISTATES STIS SI OPERATE OBSERVE; QASISTATES STIS MA2 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD; SEQ 1-7 NON-INT Comments: Switch on LV power supply. This procedure uses special commanding. Must clear event flag 3 for the commanding to execute. ------------------------------------------------------------------------------------------------------------------------------------ 2 DARK STIS/NUV TIME-TA DEF DEF BUFFER-TIME=1800 1 3110 S SPEC COM INSTR -MAMA G (3110 S) EOLVTHV2_3; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA2 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: Incrementally ramp up the detector up to its full operating voltage. Set Software Global Monitor to nominal value (10000 counts/sec), SGM Threshold = 1000, SGM Integration period = 0.1 secs. Collect minimum of 4 telemetry samples at each voltage. For requirements refer to TIR STIS 98-03. ------------------------------------------------------------------------------------------------------------------------------------ 16357( 2) - 01-Sep-2020 19:57:59 - [ 14] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 3 DARK STIS/NUV ACCUM DEF DEF 1 480.0 S SPEC COM INSTR -MAMA (480 S) EOCYCLE2_3; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA2 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: NUV-MAMA (M2) Set Software Global monitor (SGM) SGM, Threshold = 1000, SGM Integration period = 0.1 secs. Collect 5 samples W dark events. Collect 5 samples X dark events. Collect 5 samples Y dark events. Collect 5 samples Z dark event.s Collect 5 samples OR dark events. Collect 5 samples EV dark events. Collect 5 samples VE dark events. This exposure should be followed by immediately a fold analysis. ------------------------------------------------------------------------------------------------------------------------------------ 4 DARK S/C DATA NONE 1 240.0 S SAA CONTOUR 25; SPEC COM (240 S) INSTR EOFOLDSET2; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA2 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: Set Software Global monitor (SGM), SGM Threshold = 15000, SGM Integration period = 0.1 secs. Configure mechanisms Turn-on HITM1 lamp at 3.8 mA current. ------------------------------------------------------------------------------------------------------------------------------------ 5 DARK STIS/NUV ACCUM DEF DEF 1 120.0 S NEW ALIGNMENT; -MAMA (120 S) QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA2 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: NUV-MAMA (M2) Flat field details Aperture F25ND3 Sp_Element MIRROR. This image is a flat field exposure using S/C, so that the lamp remains on at the end of the exposure. Set Software Global monitor (SGM), SGM Threshold = 15000, SGM Integration period = 0.1 secs. ------------------------------------------------------------------------------------------------------------------------------------ 16357( 2) - 01-Sep-2020 19:57:59 - [ 15] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 6 DARK S/C DATA NONE 1 2300.0 S SAA CONTOUR 25; SPEC COM (2300 S) INSTR EOFOLDTST2; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA2 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: NUV-MAMA (M2) Flat field details Aperture F25ND3 Sp_Element MIRROR Set Software Global monitor (SGM SGM Threshold = 130000 SGM Integration period = 1.0 secs (a) Collect counter samples during flat field illumination Collect 5 samples X events Collect 5 samples Y events Collect 5 samples Z events Collect 5 samples W events Collect 5 samples VE events Collect 5 samples EV events Collect 5 samples OR events (b) Disable MAMA Folds: C2, C3, C4, C5, C6, R2, R3, R4, R5, R6 (c) Conduct fold analysis Collect 5 samples VE for following 19 combinations of MAMA folds: (1) Enabled: C2, R2; Disabled: C3, C4, C5, C6, R3, R4, R5, R6 (2) Enabled: C2, R3; Disabled: C3, C4, C5, C6, R2, R4, R5, R6 (3) Enabled: C3, R2; Disabled: C2, C4, C5, C6, R3, R4, R5, R6 (4) Enabled: C2, R4; Disabled: C3, C4, C5, C6, R2, R3, R5, R6 (5) Enabled: C3, R3; Disabled: C2, C4, C5, C6, R2, R4, R5, R6 (6) Enabled: C4, R2; Disabled: C2, C3, C5, C6, R3, R4, R5, R6 (7) Enabled: C3, R4; Disabled: C 2, C4, C5, C6, R2, R3, R5, R6 (8) Enabled: C4, R3; Disabled: C2, C3, C5, C6, R2, R4, R5, R6 (9) Enabled: C3, R5; Disabled: C2, C4, C5, C6, R2, R3, R4, R6 (10) Enabled: C4, R4; Disabled: C2, C3, C5, C6, R2, R3, R5, R6 (11) Enabled: C5, R3; Disabled: C2, C3, C4, C6, R2, R4, R5, R6 (12) Enabled: C4, R5; Disabled: C2, C3, C5, C6, R2, R3, R4, R6 (13) Enabled: C5, R4; Disabled: C2, C3, C4, C6, R2, R3, R5, R6 (14) Enabled: C4, R6; Disabled: C2, C3, C5, C6, R2, R3, R4, R5 (15) Enabled: C5, R5; Disabled: C2, C3, C4, C6, R2, R3, R4, R6 (16) Enabled: C6, R4; Disabled: C2, C3, C4, C5, R2, R3, R5, R6 (17) Enabled: C5, R6; Disabled: C2, C3, C4, C6, R2, R3, R4, R5 (18) Enabled: C6, R5; Disabled: C2, C3, C4, C5, R2, R3, R4, R6 (19) Enabled: C6, R6; Disabled: C2, C3, C4, C5, R2, R3, R4, R5 (d) Enable MAMA folds C2, C3, C4, C5, C6, R2, R3, R4, R5, R6 at completion of exposure. (e) Check lamp stability by checking EV and VE Collect 5 samples events (EV) to check lamp stability Collect 5 samples Valid Events (VE) to check lamp s tability (f) Turn off HITM1 lamp ( g) Collect event counter data for detector dark count rate Collect 5 samples X dark events Collect 5 samples Y dark events Collect 5 samples Z dark events Collect 5 samples W dark events Collect 5 samples VE dark events Collect 5 samples EV dark events Collect 5 samples OR dark events (h) At completion of procedure reset SGM to nominal operating level. 16357( 2) - 01-Sep-2020 19:57:59 - [ 16] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 7 DARK S/C DATA NONE 1 360.0 S SAA CONTOUR 25; SPEC COM (360 S) INSTR EOHVTHD2_3; NEW ALIGNMENT; QASISTATES STIS SI OBSERVE OBSERVE; QASISTATES STIS MA2 HOLD HOLD; QASISTATES OMCE SI HOLD HOLD Comments: Transition to Low Voltage. Transition to Hold. Set Event Flag 3. ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ DARK 1 S/C DATA NONE none none none none 1 N/A DARK 2 STIS/NUV TIME-TA DEF DEF none none none none 1 N/A -MAMA G DARK 3 STIS/NUV ACCUM DEF DEF none none none none 1 N/A -MAMA DARK 4 S/C DATA NONE none none none none 1 N/A DARK 5 STIS/NUV ACCUM DEF DEF none none none none 1 N/A -MAMA DARK 6 S/C DATA NONE none none none none 1 N/A DARK 7 S/C DATA NONE none none none none 2 N/A 16357( 2) - 01-Sep-2020 19:57:59 - [ 17] Summary Form for Proposal 16357 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures DEF, NONE ------------------------------------------------------------------------------------------------------------------------------------ Configurations S/C, STIS/FUV-MAMA, STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, DATA, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=1800 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01 BY 1.0 D TO 30.0 D, AFTER 02 BY 1.0 D TO 30.0 D, AFTER 04 BY 1.0 D TO 30.0 D, AFTER 05 BY 1.0 D TO 30.0 D, NEW ALIGNMENT, ON HOLD , PARALLEL, QASISTATES OMCE SI HOLD HOLD, QASISTATES STIS MA1 HOLD HOLD, QASISTATES STIS MA2 HOLD HOLD, QASISTATES STIS SI OBSERVE OBSERVE, QASISTATES STIS SI OPERATE OBSERVE, QASISTATES STIS SI OPERATE OPERATE, SAA CONTOUR 25, SAME ALIGNMENT 1-3, SEQ 1-4 NON-INT, SEQ 1-7 NON-INT, SPEC COM INSTR EOCYCLE1_2, SPEC COM INSTR EOCYCLE1_3, SPEC COM INSTR EOCYCLE2_2, SPEC COM INSTR EOCYCLE2_3, SPEC COM INSTR EOFLAG2, SPEC COM INSTR EOFLAG3, SPEC COM INSTR EOFOLDSET1, SPEC COM INSTR EOFOLDSET2, SPEC COM INSTR EOFOLDTST1, SPEC COM INSTR EOFOLDTST2, SPEC COM INSTR EOHDTLV1_1, SPEC COM INSTR EOHDTLV1_2, SPEC COM INSTR EOHDTLV1_3, SPEC COM INSTR EOHDTLV2_1, SPEC COM INSTR EOHDTLV2_2, SPEC COM INSTR EOHDTLV2_3, SPEC COM INSTR EOHVTHD1_2, SPEC COM INSTR EOHVTHD1_3, SPEC COM INSTR EOHVTHD2_2, SPEC COM INSTR EOHVTHD2_3, SPEC COM INSTR EOLVTHV1_2, SPEC COM INSTR EOLVTHV1_3, SPEC COM INSTR EOLVTHV2_2, SPEC COM INSTR EOLVTHV2_3, SPEC COM INSTR ROLVTHDM1, SPEC COM INSTR ROLVTHDM2 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements DEF ------------------------------------------------------------------------------------------------------------------------------------ Target Names DARK ------------------------------------------------------------------------------------------------------------------------------------