15542( 4) - 07-Nov-2018 17:20:06 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 15542 Version: 4 Check-in Time: 07-Nov-2018 17:20:06 STScI Edit Number: 3 Title Cycle 26 COS NUV Target Acquisition Monitor ------------------------------------------------------------------------------------ Type Cycle CAL/COS 26 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. David J. Sahnow Space Telescope Science Institute Y CoI: Dr. Bethan Lesley James Space Telescope Science Institute - ESA Y ------------------------------------------------------------------------------------ Abstract Visits PA, BA, & BB of this program verify all ACQ/IMAGE mode co-alignments by bootstrapping from PSA+MIRRORA. The assumption, which should be tested at some point, is that the PSA+MIRRORA WCA-to-PSA FSW offsets are still as accurate in defining the center of the PSA relative to the WCA as there were in SMOV. The details of the observations are given is the observing section. Visit PB obtains the PSA/MIRRORA to PSA/MIRRORB ACQ/IMAGE alignment. Visit BA takes back-to-back PSA/MIRRORB & BOA/MIRRORA ACQ/Images and images (with flashes) and also takes G230L, G285M as well as FUV LP3 G130M and G140L spectra to test the WCA-to-PSA offsets. Visit BB takes back-to-back BOA/MIRRORA & BOA/MIRRORB ACQ/Images and images (with flashes) and also takes G225M, G185M, and FUV LP3 G160M spectra to test the WCA-to-PSA offsets. In all visits, lamp+target images are taken before and after the TA imaging mode that is being co-aligned (the second ACQ/IMAGE of the program.) ------------------------------------------------------------------------------------ Observations Description ------------------------ Each visit in this program begins with a comparison of the ACQ/IMAGE centering of two ACQ/IMAGE modes out of the possible four (PSA or BOA) x (MIRRORA or MIRRORRB). This will involve not only the ACQ/images, but NUV detector images of the WCA lamp image and, if possible, coeval target images. These direct comparisons are only available for the PSA modes. For the BOA modes, the WCA lamp images and target images are taken consecutively. The assumption is that the PSA/MIRRORA ACQ/IMAGE centering has not changed since SMOV (questionable). Each of the other science aperture (SA) and MIRRORA/B ACO/IMAGE combinations were co-aligned during SMOV and rely upon the flight software (FSW) WCA-to-SA along-dispersion (AD) and cross-dispersion (XD) offsets. This back-to-back ACQ/IMAGE process allows us to test that TA modes are centering the target to the same point in the aperture. The Lamp+target exposures are interleaved throughout the visit to measure and verify the imaging WCA-to-SA offsets are still accurate for the remainder of the current HST Cycle. Images will usually use the PtNe#2 (P2) lamp, as it is the primary 15542( 4) - 07-Nov-2018 17:20:06 - [ 2] TA lamp, but some images will use PtNe#1 (P1) to monitor the lamps in imaging mode. Visit PB (Psa/mirrorB) of this program takes back-to-back PSA/MIRRORA & PSA/MIRRORB ACQ/Images and images (with flashes) Visit BA (Boa/mirrorA) of this program takes back-to-back PSA/MIRRORB & BOA/MIRRORA ACQ/Images and images (with flashes) and takes G230L & G285M spectra to test the WCA-to-PSA offsets. Visit BB (Boa/mirrorB) of this program takes back-to-back BOA/MIRRORA & BOA/MIRRORB ACQ/Images and images (with flashes) and takes G225M & G185M spectra to test the WCA-to-PSA offsets. Visit BB of this program also takes a "family portrait" of all the P1/P2 MIRRORA/B WCA lamp images to track any drifting of the centroids, or changes in the lamps. All lamp+target images now use the QESIPARMS USECURRENT and CURRENT to specifically set the lamp and current values. See the comment of the first exposure of Visit PB for a description of the expected count rates, exposure times, & buffer times (for the lamps). --------- Additional Comments ---------- Must be performed on 2 Guidestar fine-lock and must not use FGS2. Guidestar pair must be reviewed by the PC. ------------------------------------------------------------------------------------ 15542( 4) - 07-Nov-2018 17:20:06 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 206W3 STAR, G V-IV RA=06H08M55.4600S +/- 0.25", J2000 V = 14.53 +/- 0.1 J=13.441, B=14.930 DEC=+24D15'39.59" +/- 0.25" Reference Frame: ICRS Extended: NO Comments: Target previously observed in Visit 2 of 12781. According to Colin, the target coordinates given here have been adjusted to ~2012.7. I include the UCAC3 PM in case this visit is used again at a later date. The PSA/MIRRORA had 21, 063 counts in 60s (351 ct/s). Max pixel = 1965/60 = 32.75 ct/s The PSA/MIRRORB had 12, 570 counts in 300s (41.9 cts/s). Max pixel = 238/300 = 0.8 ct/s So, PSA MirrorA/MirrorB = 351.0/41.9 = 8.4 (for this target) This target is N8CV022007 in GSC2.3.2 From SIMBAD: Basic data : Cl* NGC 2168 M 178 -- Star in Cluster Other object types: *iC (Cl*), IR (2MASS) ICRS coord. (ep=J2000) : 06 08 55.46 +24 15 39.8 ( Infrared ) [ 70 60 0 ] B 2003yCat.2246....0C FK5 coord. (ep=J2000 eq=2000) : 06 08 55.46 +24 15 39.8 [ 70 60 0 ] FK4 coord. (ep=B1950 eq=1950) : 06 05 51.62 +24 16 12.1 [ 70 60 0 ] Gal coord. (ep=J2000) : 186.6569 +02.1612 [ 70 60 0 ] Fluxes (6) : B 14.930 [~] D ~ V 14.481 [~] D ~ R 14.600 [~] E 2003yCat.2246....0C J 13.441 [0.023] C 2003yCat.2246....0C H 13.354 [0.022] C 2003yCat.2246....0C K 13.227 [0.026] C 2003yCat.2246....0C Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2012.7 3.6562408455505035E-5 -0.0022 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 2 WD-1657+343 STAR, DA RA=16H58M51.1200S +/- 0.25", J2000 V = 16.1 DEC=+34D18'53.30" +/- 0.25" Reference Frame: ICRS Extended: NO Comments: COS.ta.432603 indicates this is a good PSA/MIRB to BOA/MIRA target PSA/MIRB counts = S/N=60 in 11.6s (S/N = 40 in 5.2s); COS.ta.432604 gives S/N=60 in 150.7s for BOA/MIRA ------------------------------------------------------------------------------------------------------------------------------------ 15542( 4) - 07-Nov-2018 17:20:06 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 3 HIP66578 STAR, DA RA=13H38M50.4757S +/- 0.1", J2000 V = 26 V = 12.773 +/- 0.024 F(1300)=1.3E-12, DEC=+70D17'7.66" +/- 0.1" F(1800)=5.2E-13 Reference Frame: ICRS Extended: NO Comments: COS.ta.432623 S/N=60 in 12s BOA/MIRRORA, BOA/MIRRROB (COS.ta.432624) in 175s. This is an HST Standard Star (DA3) Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -0.07977253483034491 -0.022 0.03829 ------------------------------------------------------------------------------------------------------------------------------------ 15542( 4) - 07-Nov-2018 17:20:06 - [ 5] Visit: BA (PSA/B & BOA/A) Visit Requirements: SCHED 100%; BETWEEN 01-JAN-2019:00:00:00 AND 31-JAN-2019:00:00:00; GROUP BA, BB, PB WITHIN 30D On Hold Comments: Additional Comments: Visit BA compares the centering of PSA/MIRRORB to BOA/MIRRORA. The target will be the standard star WD1657+343. 100% Schedubility. This Visit (BA) should be executed within 30 days of the other visits inthis program, but in no particular order. The closer in time that they can all be executed, the better. We also take some G230L & G285M spectra to test the WCA-to-PSA offsets. 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 WD-1657+343 COS/NUV ACQ/IMA PSA MIRRORB 1 15 S (15 GS ACQ SCENARIO BASE1B3; GE S) SEQ 1-10 NON-INT Comments: COS.ta.433946 gives S/N=60 in 11.65s. BP = 43 cps. We observed this target in Program 13124 and the target count rate was 400 cts/s, total cts = 4800 total , BP=24 cts/s That's sqrt(2/3 * 4800) = 56 (S/N) ------------------------------------------------------------------------------------------------------------------------------------ 2 WD-1657+343 COS/NUV TIME-TA PSA MIRRORB FLASH=S0040D016, 1 18 S (18 QESIPARM USELAMP LINE2; G BUFFER-TIME=500 S) QESIPARM CURRENT MEDIUM Comments: COS.ta.433946 gives S/N=60 in 11.65s. BP = 42 cps. A previous exposure of this target (lcgq01q7q) yielded a total (lamp+target+background) count rate of 24617 counts in 16s (1538 cps). So buffer time should be < 0.67 *(2.35E6/1538.) = 1024. Just be safe, we go with 500s. We insert a 16s lamp flash to make sure we get enough counts in the lamp image ------------------------------------------------------------------------------------------------------------------------------------ 3 WD-1657+343 COS/NUV TIME-TA BOA MIRRORA BUFFER-TIME=2000 1 150 S (150 G S) Comments: COS.ta.433949 gives S/N=60 in 150s, followed by a wavecal. The exposure time is driven by the target. We observed this target in 13124, the target count rate was 18.2 cps (2736 counts in 150s : ~312 background in 150s over a 50x50 box). This is a BOA image, so we need to add a WAVE image after this exposure. The WAVECAL=YES parameter does not trigger a separate lamp image. Buffer should be < 0.67 * (2.35E6/20.) or < 7800. We use 2000 just to be safe. 15542( 4) - 07-Nov-2018 17:20:06 - [ 6] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE COS/NUV TIME-TA WCA MIRRORA 1 12 S (12 QESIPARM USELAMP LINE2; G S) QESIPARM CURRENT LOW Comments: For P2/LOW/MIRRORA we get 2900 counts in 7s. Buffer Time is calculated automatically. ------------------------------------------------------------------------------------------------------------------------------------ 5 WD-1657+343 COS/NUV ACQ/IMA BOA MIRRORA 1 150 S (150 GE S) Comments: COS.ta.433949 gives S/N=60 in 150s ------------------------------------------------------------------------------------------------------------------------------------ 6 WAVE COS/NUV TIME-TA WCA MIRRORA 1 12 S (12 QESIPARM USELAMP LINE2; G S) QESIPARM CURRENT LOW Comments: For P2/LOW/MIRRORA we get 2900 counts in 7s ------------------------------------------------------------------------------------------------------------------------------------ 7 WD-1657+343 COS/NUV TIME-TA PSA MIRRORB FLASH=S0040D016, 1 18 S (18 QESIPARM USELAMP LINE2; G BUFFER-TIME=500 S) QESIPARM CURRENT MEDIUM Comments: COS.ta.433946 gives S/N=60 in 11.65s. BP = 42 cps. A previous exposure of this target (lcgq01q7q) yielded a total (lamp+target+background) count rate of 24617 counts in 16s (1538 cps). So buffer time should be < 0.67 *(2.35E6/1538.) = 1024. Just be safe, we go with 500s. We insert a 16s lamp flash to make sure we get enough counts in the lamp image ------------------------------------------------------------------------------------------------------------------------------------ 8 WD-1657+343 COS/NUV ACQ/IMA PSA MIRRORB 1 15 S (15 GE S) Comments: COS.ta.433946 gives S/N=60 in 11.65s. BP = 43 cps. We observed this target in 13124 and the target count rate was 400 cts/s, total cts = 4800, BP=24 cts/s That's sqrt(2/3 * 4800) = 56 (S/N) ------------------------------------------------------------------------------------------------------------------------------------ 15542( 4) - 07-Nov-2018 17:20:06 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 9 WD-1657+343 COS/NUV TIME-TA PSA G230L 3000 BUFFER-TIME=700, FP-POS=3, 1 60 S (60 QESIPARM USELAMP LINE2; G FLASH=S0100D030 S) QESIPARM CURRENT MEDIUM Comments: COS.sp.1030028 gives S/N=10/RE in 40s, we go for 60s. BT=2/3*1300 < 800 (we use 700 just to be safe) Based upon the data from 13124, we expect 3800 counts in 30s in the B-stripe. We set the lamp to the exposure time to get more counts. Note that previous version of this program had a typo in the label (it said 2950 not 3000). G230L/3000 is one of the 'approved' NUV cenwaves for TA. ------------------------------------------------------------------------------------------------------------------------------------ 10 WD-1657+343 COS/NUV TIME-TA PSA G285M 2676 BUFFER-TIME=1000, FP-POS=3, 1 300 S (300 QESIPARM USELAMP LINE2; G FLASH=S0090D030 S) QESIPARM CURRENT MEDIUM Comments: COS.sa.1030031 gives S/N=20 in the XD (per stripe) in one million seconds, BT=2/3 * 2700 < 1800. Normal Tagflashing is not sufficient for our WCA needs, so we go for 30s ON, 60s OFF. A 300s exposure gets us lampflashes at 0-30s, 90-120s, 180-210s and 270-300s. (120s of lamp time). G285M/2676 is one of the 'approved' NUV cenwaves for TA, but even this may not work due to the extremen TDS of this grating. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ WD-1657+343 1 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE WD-1657+343 2 COS/NUV TIME-TA PSA MIRRORB none none none none 1 N/A G WD-1657+343 3 COS/NUV TIME-TA BOA MIRRORA none none none none 1 N/A G WAVE 4 COS/NUV TIME-TA WCA MIRRORA none none none none 1 N/A G WD-1657+343 5 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE WAVE 6 COS/NUV TIME-TA WCA MIRRORA none none none none 1 N/A G WD-1657+343 7 COS/NUV TIME-TA PSA MIRRORB none none none none 1 N/A G WD-1657+343 8 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE 15542( 4) - 07-Nov-2018 17:20:06 - [ 8] 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 | ------------------------------------------------------------------------------------------------------------------------------------ WD-1657+343 9 COS/NUV TIME-TA PSA G230L 3000 none none none none 1 N/A G WD-1657+343 10 COS/NUV TIME-TA PSA G285M 2676 none none none none 1 N/A G 15542( 4) - 07-Nov-2018 17:20:06 - [ 9] Visit: BB (BOA/A & BOA/B) Visit Requirements: SCHED 100%; BETWEEN 01-JAN-2019:00:00:00 AND 31-JAN-2019:00:00:00; GROUP BB, BA, PB WITHIN 30D On Hold Comments: Additional Comments: Visit BB compares the centering of BOA/MIRRORA to BOA/MIRRORB. 100% Schedubility. This Visit (BB for BOA/MIRRORB) should be executed with 30 days of the other visits inthis program, in no particular order. The closer in time that they can all be executed, the better. We also take G185M & G225M spectra for the WCA-to-PSA offsets for NUV PEAKXD. 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 HIP66578 COS/NUV ACQ/IMA BOA MIRRORA 1 18 S (18 GS ACQ SCENARIO BASE1B3; GE S) SEQ 1-10 NON-INT Comments: Using the standard star HIP66578 to compare the centerings between the BOA/MIRRORA and BOA/MIRRORB ACQ/IMAGE centering options. The ETC gives 12 seconds to reach S/N=60 with this target in the BOA/MIRRORA mode. We observed this target in 13124, with 2961 counts in 12s (target +background in 50x50 box). We will need to follow this with a P2/LOW/WCA/A image. ------------------------------------------------------------------------------------------------------------------------------------ 2 WAVE COS/NUV TIME-TA WCA MIRRORA BUFFER-TIME=270 1 16 S (16 QESIPARM USELAMP LINE2; G S) QESIPARM CURRENT LOW Comments: For P2/LOW/MIRRORA we get 2900 counts in 7s. The BT for this must be < 0.37*(2.35E6/4800) or < 270 ------------------------------------------------------------------------------------------------------------------------------------ 3 HIP66578 COS/NUV TIME-TA BOA MIRRORB BUFFER-TIME=1000 1 183 S (183 G S) Comments: Followup BOA/MIRRORB calibration IMAGE with a wavecal to verify proper initial centering (The ETC gives 175 seconds to reach S/N=60 with this target in the BOA/MIRRORA mode.) The BT is ~ 0.67*2.35E6/(1000) < 1575. as we are only getting about 20 cps from the source, most of the counts are noise. This is a BOA image, so we need to add a WAVE image after this exposure. The WAVECAL=YES parameter does not trigger a separate lamp image ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE COS/NUV TIME-TA WCA MIRRORB BUFFER-TIME=2000 1 24 S (24 QESIPARM USELAMP LINE2; G S) QESIPARM CURRENT MEDIUM Comments: For P2/MED, we expect 300-460 cps, with a Brightest Pixel = 9 cts/s. So BT < 0.67*(2.35E6/460) < 3400. ------------------------------------------------------------------------------------------------------------------------------------ 15542( 4) - 07-Nov-2018 17:20:06 - [ 10] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 5 HIP66578 COS/NUV ACQ/IMA BOA MIRRORB 1 183 S (183 GE S) Comments: Compare the centerings between the BOA/MIRRORA and BOA/MIRRORB ACQ/IMAGE centering options. The ETC gives 175 seconds to reach S/N=60 with this target in the BOA/MIRRORB mode. ------------------------------------------------------------------------------------------------------------------------------------ 6 WAVE COS/NUV TIME-TA WCA MIRRORB BUFFER-TIME=2000 1 24 S (24 QESIPARM USELAMP LINE2; G S) QESIPARM CURRENT MEDIUM Comments: For P2/MED, we expect 300-460 cps, with a Brightest Pixel = 9 cts/s. So BT < 0.67*(2.35E6/460) < 3400. ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE COS/NUV TIME-TA WCA MIRRORA BUFFER-TIME=270 1 16 S (16 QESIPARM USELAMP LINE2; G S) QESIPARM CURRENT LOW Comments: For P2/LOW/MIRRORA we get 2900 counts in 7s. The BT for this must be < 0.37*(2.35E6/4800) or < 270 ------------------------------------------------------------------------------------------------------------------------------------ 8 HIP66578 COS/NUV ACQ/IMA BOA MIRRORA 1 18 S (18 GE S) Comments: Using the standard star HIP66578 to compare the centerings between the BOA/MIRRORA and BOA/MIRRORB ACQ/IMAGE centering options. The ETC gives 12 seconds to reach S/N=60 with this target in the BOA/MIRRORA mode. We observed this target in 13124, with 2961 counts in 12s (target +background in 50x50 box). We will need to follow this with a P2/LOW/WCA/A image. ------------------------------------------------------------------------------------------------------------------------------------ 9 HIP66578 COS/NUV TIME-TA PSA G225M 2306 BUFFER-TIME=540, 1 90 S (90 QESIPARM USELAMP LINE2; G FLASH=S0200D035, FP-POS=3 S) QESIPARM CURRENT MEDIUM Comments: COS.sp.1030027 gives s/n/re =10 in 70 seconds. BT=2/3 *1000 < 666. We want to get a good lamp flash, so 35s should be ok. FPPOS=3. G225M/2306 is one of the 'approved' NUV cenwaves for TA. We request 90s to account for further TDS ------------------------------------------------------------------------------------------------------------------------------------ 15542( 4) - 07-Nov-2018 17:20:06 - [ 11] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 10 HIP66578 COS/NUV TIME-TA PSA G185M 1913 BUFFER-TIME=300, 1 120 S (120 QESIPARM USELAMP LINE2; G FLASH=S0070D035, FP-POS=3 S) QESIPARM CURRENT MEDIUM Comments: COS.sp.1030026 gives s/n/re =10.7 in ~40 seconds. BT=2/3 * 638 < 400. We want to get a good lamp flash, so 35s should be ok. FPPOS=3. G2185M/1913 is one of the 'approved' NUV cenwaves for TA. Due to concerns over grating TDS, I have trippled the exposure time to 120 seconds ------------------------------------------------------------------------------------------------------------------------------------ 11 WAVE COS/NUV TIME-TA WCA MIRRORA 1 16 S (16 QESIPARM USELAMP LINE1; G S) QESIPARM CURRENT LOW; SEQ 11-14 NON-INT Comments: For P1/LOW/A, we expect 2620 counts/s. BP = 45 cp/s. This is derived from data in program 13124. ------------------------------------------------------------------------------------------------------------------------------------ 12 WAVE COS/NUV TIME-TA WCA MIRRORA 1 26 S (26 QESIPARM USELAMP LINE2; G S) QESIPARM CURRENT LOW Comments: For P2/LOW/MIRRORA we get 2900 counts in 7s ------------------------------------------------------------------------------------------------------------------------------------ 13 WAVE COS/NUV TIME-TA WCA MIRRORB 1 32 S (32 QESIPARM USELAMP LINE1; G S) QESIPARM CURRENT LOW Comments: For P1/LOW, we expect 82 cts/s, to get 1600 counts in the primary spot, we need 2400 counts. 2400./82 = 30 seconds ------------------------------------------------------------------------------------------------------------------------------------ 14 WAVE COS/NUV TIME-TA WCA MIRRORB 1 26 S (26 QESIPARM USELAMP LINE2; G S) QESIPARM CURRENT MEDIUM Comments: For P2/MED, we expect 300-460 cps, with a Brightest Pixel = 9 cts/s ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HIP66578 1 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE WAVE 2 COS/NUV TIME-TA WCA MIRRORA none none none none 1 N/A G HIP66578 3 COS/NUV TIME-TA BOA MIRRORB none none none none 1 N/A G WAVE 4 COS/NUV TIME-TA WCA MIRRORB none none none none 1 N/A G 15542( 4) - 07-Nov-2018 17:20:06 - [ 12] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HIP66578 5 COS/NUV ACQ/IMA BOA MIRRORB none none none none 1 N/A GE WAVE 6 COS/NUV TIME-TA WCA MIRRORB none none none none 1 N/A G WAVE 7 COS/NUV TIME-TA WCA MIRRORA none none none none 1 N/A G HIP66578 8 COS/NUV ACQ/IMA BOA MIRRORA none none none none 1 N/A GE HIP66578 9 COS/NUV TIME-TA PSA G225M 2306 none none none none 1 N/A G HIP66578 10 COS/NUV TIME-TA PSA G185M 1913 none none none none 1 N/A G WAVE 11 COS/NUV TIME-TA WCA MIRRORA none none none none 1 N/A G WAVE 12 COS/NUV TIME-TA WCA MIRRORA none none none none 1 N/A G WAVE 13 COS/NUV TIME-TA WCA MIRRORB none none none none 1 N/A G WAVE 14 COS/NUV TIME-TA WCA MIRRORB none none none none 1 N/A G 15542( 4) - 07-Nov-2018 17:20:06 - [ 13] Visit: PB (PSA/A & PSA/B) Visit Requirements: SCHED 100%; BETWEEN 01-JAN-2019:00:00:00 AND 31-JAN-2019:00:00:00; GROUP PB, BA, BB WITHIN 30D On Hold Comments: Additional Comments: This visit (PB, for PSA/MIRRORBA) performs the PSA/A vs PSA/B comparison. The target is 206W3, a target that was used last cycle and in the previous FGS-to-SI programs. 100% Schedulability. Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 15542( 4) - 07-Nov-2018 17:20:06 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 1 206W3 COS/NUV ACQ/IMA PSA MIRRORA 1 22 S (22 GS ACQ SCENARIO BASE1B3; GE S) SEQ 1-7 NON-INT Comments: The measured direct count rates for this target in Program 13171 are (S/N are just photon statistics of the lamp or target) PSA/MIRRORA = 245 count/s (S/N = 40 in 7s, 60 in 15s) PSA/MIRRORB = 15.6 count/s (S/N = 40 in 102s, 50 in 160, 60 in 230s) A/B = 15.7 for this target WCA/P2/MIRRORA@LOW = 7s produced 2900 counts(S/N = 54) WCA/P2/MIRRORB@LOW = 30s produced 420 counts (S/N = 21) WCA/P2/MIRRORB@MED = 10s is estimated to produce ~4000 counts (S/N = 52 in the primary spot) WCA/P1/MIRRORB@LOW = 82 hz, so S/N =50 in 30s WCA/A(LOW)/B(LOW) = 25-30 WCA/B(MED)/B(LOW) is estimated to be 15-20 To get everything at S/N = 50 we need at least the following exposure times PSA(target)/A = 10s PSA(target)/B = 160s WCA/P2/LOW/A = 6s WCA/P2/LOW/B = 180s (low current), S/N = 47 in 160s WCA/P1/LOW/B is 5x brighter than lamp#2, so at least 36s WCA/P2/MED/B is unknown, but we estimate it to be 15-20x the 2/LOW rate, so at least 12s For each target image, we will use the 9x9 checkbox method, so the background for PSA exposures is 9x9*(500/(50*300)/30s) based upon 500 counts in 30s in the WCA 50x300 box. This is 1 count in 10s, so we ignore this for the PSA. For the WCA images, we will be working a 50x300 box, so the rate here is 18 hz, but we are using a median to find the center, so it is not a straightforward S/N situation. We are interested in measuring the centroid in presence of the noise and 2500 lamp counts are sufficient for our needs for WCA/P2/LOW/B. Since, we are defining the WCA-to-PSA offset for WCA/P1/LOW/B and WCA/P2/MED/B, we will shoot for 3000 lamp counts. For the Buffer Time, we are shooting for S/N = 50. in both the target and the lamp. Lets overshoot to S/N of 60, that's 7200 counts -> BT = 2/3 * 326= 217. We'll be extra conservative and stay short of this. For PSA/MIRRORA: (COS.ta.634846) We Simulated in ETC as G5, V=13.5 (lit says 14.5), S/N = 60 gives: Time = 13 seconds.Target count rate = 275 cts/s Brightest Pixel 38 cps PSA/MIRRORB: (COS.ta.634849) We Simulated in ETC as G5, V=13.5 (lit says 14.5), S/N = 50 gives: Time = 217 seconds. Target count rate = 11.6 cts/s Brightest Pixel 1.6 cps This target was also previously observed in Visit A2 of 12781, with the following REAL count rates (imaging mode) The PSA/A had 21, 063 total counts in 60s (Target = 206W3), after background subtraction = 20, 100 = 335 cts/s. PSA/A Brightest Pixel = 32.8 counts/s The PSA/MIRRORB had 12, 570 total counts in 300s, after background subtraction=7150 = 23.8 cts/s. PSA/B Brightest Pixel = 0.8 counts/s PSA A/B = 14x (lbx1a2ffq/lbx1a2fhq) & PSA A/B (BP) = 41x Remember that the SED of the target is important in this ratio as the two modes have different responses. For PSA/A We get S/N = 60 in 3600/335 = 11s For PSA/B, We get S/N = 60 in 3600/23.8 = 151s In Oct 2016, this target was observed as part of 14452 Visit A2, with the following count rates: The PSA/A had 21, 063 total counts in 60s (Target = 206W3), after background subtraction = 20, 229 = 337 cts/s, Brightest Pixel = 23.1 counts/s The PSA/B had 14, 627 total counts in 300s, after background subtraction=7655 = 25.5 cts/s. PSA/B Brightest Pixel = 1.3 counts/s 15542( 4) - 07-Nov-2018 17:20:06 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 2 206W3 COS/NUV TIME-TA PSA MIRRORA BUFFER-TIME=150, 1 22 S (22 QESIPARM USELAMP LINE2; G FLASH=S0060D020, CURRENT=LOW S) QESIPARM CURRENT LOW Comments: Lamp and target image to measure the WCA-to-PSA offset for PSA/MIRRORA/P2/LOW current. Expect 416 counts/s from lamp, about the same from the target. We take 20s of each. Note that CURRENT=LOW and LAMP=LINE2 are set as QESIPARMs ------------------------------------------------------------------------------------------------------------------------------------ 3 206W3 COS/NUV TIME-TA PSA MIRRORB BUFFER-TIME=200, 1 222 S (222 QESIPARM USELAMP LINE2; G FLASH=S0120D020, S) QESIPARM CURRENT MEDIUM CURRENT=MEDIUM Comments: Lamp and target image to measure the WCA-to-PSA offset for PSA/MIRRORB/P2/MED current. Expect ~400 counts/s from the lamp. We need >k160s of target time, and at least 12s of lamp time. We'll get 200s of target and 2x20 to get a good measurement. Note that CURRENT=MED and LAMP=LINE2 are set as QESIPARMs ------------------------------------------------------------------------------------------------------------------------------------ 4 206W3 COS/NUV ACQ/IMA PSA MIRRORB 1 222 S (222 GE S) Comments: PSA/MIRRORB ACQ/Image using P2/MED current. ------------------------------------------------------------------------------------------------------------------------------------ 5 206W3 COS/NUV TIME-TA PSA MIRRORB BUFFER-TIME=200, 1 222 S (222 QESIPARM USELAMP LINE2; G FLASH=S0120D020, S) QESIPARM CURRENT MEDIUM CURRENT=MEDIUM Comments: Lamp and target image to re-measure the WCA-to-PSA offset for PSA/MIRRORB/P2/MED current. Expect 225-400 counts/s from the lamp. We need > 160s of target time, and at least 12s of lamp time. We'll get 200s of target and 2x20 of lamp to get a good measurement. Note that CURRENT=MED and LAMP=LINE2 are set as QESIPARMs ------------------------------------------------------------------------------------------------------------------------------------ 6 206W3 COS/NUV TIME-TA PSA MIRRORA BUFFER-TIME=200, 1 22 S (22 QESIPARM USELAMP LINE2; G FLASH=S0060D020, CURRENT=LOW S) QESIPARM CURRENT LOW Comments: Lamp and target image to re-measure the WCA-to-PSA offset for PSA/MIRRORA/Lamp2/LOW current. Expect 416 counts/s from lamp, about the same from the target. We need at least >12s of each, we get 20s for a good measurement. Note that CURRENT=LOW and LAMP=LINE2 are set as QESIPARMs 15542( 4) - 07-Nov-2018 17:20:06 - [ 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 206W3 COS/NUV ACQ/IMA PSA MIRRORA 1 22 S (22 GE S) Comments: Confirmation PSA/A ACQ/image, see first exposure of this visit for complete comment. ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ 206W3 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 206W3 2 COS/NUV TIME-TA PSA MIRRORA none none none none 1 N/A G 206W3 3 COS/NUV TIME-TA PSA MIRRORB none none none none 1 N/A G 206W3 4 COS/NUV ACQ/IMA PSA MIRRORB none none none none 1 N/A GE 206W3 5 COS/NUV TIME-TA PSA MIRRORB none none none none 1 N/A G 206W3 6 COS/NUV TIME-TA PSA MIRRORA none none none none 1 N/A G 206W3 7 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 15542( 4) - 07-Nov-2018 17:20:06 - [ 17] Summary Form for Proposal 15542 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures BOA, PSA, WCA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/NUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=1000, BUFFER-TIME=150, BUFFER-TIME=200, BUFFER-TIME=2000, BUFFER-TIME=270, BUFFER-TIME=300, BUFFER-TIME=500, BUFFER-TIME=540, BUFFER-TIME=700, CURRENT=LOW, CURRENT=MEDIUM, FLASH=S0040D016, FLASH=S0060D020, FLASH=S0070D035, FLASH=S0090D030, FLASH=S0100D030, FLASH=S0120D020, FLASH=S0200D035, FP-POS=3 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 01-JAN-2019:00:00:00 AND 31-JAN-2019:00:00:00, GROUP BA, BB, PB WITHIN 30D, GROUP BB, BA, PB WITHIN 30D, GROUP PB, BA, BB WITHIN 30D, GS ACQ SCENARIO BASE1B3, QESIPARM CURRENT LOW, QESIPARM CURRENT MEDIUM, QESIPARM USELAMP LINE1, QESIPARM USELAMP LINE2, SCHED 100%, SEQ 1-10 NON-INT, SEQ 1-7 NON-INT, SEQ 11-14 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G185M, G225M, G230L, G285M, MIRRORA, MIRRORB ------------------------------------------------------------------------------------------------------------------------------------ Target Names 206W3, HIP66578, WAVE, WD-1657+343 ------------------------------------------------------------------------------------------------------------------------------------