16509( 3) - 09-Sep-2021 18:15:00 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 16509 Version: 3 Check-in Time: 09-Sep-2021 18:15:00 STScI Edit Number: 0 Title Detection of the Astrometric Microlensing Signal by the Binary Black Hole Candidate MOA-2019-BLG-284 ------------------------------------------------------------------------------------ Type Cycle GO 28 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Sean Terry University of California - Berkeley Y CoI: Dr. Jessica Ryan Lu University of California - Berkeley Y CoI: Dr. David P. Bennett University of Maryland N CoI: Casey Lam University of California - Berkeley N CoI: Dr. Aparna Bhattacharya University of Maryland N CoI: Dr. Jean-Philippe Beaulieu CNRS, Institut d'Astrophysique de Paris N CoI: Dr. Ian Bond Massey University N CoI: Dr. Andrzej Udalski Warsaw University N CoI: Dr. Jay Anderson Space Telescope Science Institute N CoI: Dr. Przemek Mroz California Institute of Technology N ------------------------------------------------------------------------------------ Abstract We propose to directly measure, for the first time, the individual masses for the binary black hole candidate MOA-2019-BLG-284. Unlike some previous studies (Sahu+2009, 2019, Kains+2017), we have selected this candidate based on both its large Einstein radius crossing time of 500 days and its relatively small microlensing parallax of 0.038. The combination of these two parameters is much more effective at identifying black hole microlensing candidates than using events with large Einstein radius crossing time, but no constraint on the microlensing parallax. We also have worked with the microlensing survey groups to remove systematic photometry errors that could contaminate the microlensing parallax measurement. This target is ideal given its very long duration, clear microlensing parallax signal, relatively bright baseline magnitude and previous HST observations taken in 2020. Further, the current best-model gives a total lens mass of ~10 Msun or more, with roughly equal mass lens components. If successful, these observations will complement the groundbreaking work of LIGO, and open a new window on the population of (pre-merged) binary black holes in our Galaxy. ------------------------------------------------------------------------------------ Observations Description ------------------------ If this observing program is successful, it will open a new window on the population of binary black holes (BHs) in our Galaxy and contribute to our understanding of the Galactic distribution of binary BHs, with which LIGO paved the way. We will avoid any potential saturation issues in these new 2021 epochs by using ground-based observations shortly before the scheduled HST observations to ensure the exposure time selected will not saturate the target. In the event that the OGLE or MOA observatories are shut down due to COVID-19 during this time frame, we can easily pivot to an observing scheme that uses primarily many short exposures that we can stack. We propose measurements in the F814W passband over four separate visits during March - September. 16509( 3) - 09-Sep-2021 18:15:00 - [ 2] Four visits are needed in order to maximize the probability that we are able to successfully measure the astrometric shift induced by the binary BH lens. We request 16 exposures per orbit in the WFC3/UVIS F814W passband to get good spatial sampling of the effective PSFs (Anderson and King 2000), and this means that we will be unable to do parallel, full-frame buffer dumps. However, our target is relatively bright, so we want a large enough area to ensure a sufficient number of stars with a similar color and brightness to our target that can be used to construct precise PSF models and calibrate the data. We select the UVIS2-C1K1C-SUB subarray to obtain ~ 50 stars within 0.5 in magnitude from the target, similar to the previous observing program's strategy. Due to roll-angle (U3 range) restrictions, our target cannot be observed with the same pixel orientation in two visits separated by 200 days, therefore we request a 180 degree orientation change between visit two and three (i.e. visits one and two: 269 degree, visits three and four: 89 degree). This will allow us to maintain the pixel grid alignments between all four visits. Note: Reduced gyro operations may degrade the astrometric performance and require marginally longer exposure times to achieve a comparable astrometric precision. There exist archival two-gyro astrometric data sets that we could use to estimate the impact, if needed. Again, we have a mitigation protocol ready to implement in the event that we are unable to measure the target brightness from the ground (due to COVID-19 or otherwise) and adjust the HST exposure time shortly before each epoch. This backup plan ensures we are still able to retrieve the best-possible astrometry and photometry of the magnified source star in each epoch. ------------------------------------------------------------------------------------ 16509( 3) - 09-Sep-2021 18:15:00 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 MOA-2019-BLG STAR, BULGE, RA=18H05M55.0600S, J2000 V = 17.10 +/- 0.10 I = 15.38 +/- 0.10 -284 GRAVITATIONAL LENS DEC=-30D20'12.94" Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 16509( 3) - 09-Sep-2021 18:15:00 - [ 4] Visit: 01 Visit Requirements: ORIENT 269D TO 269 D; BETWEEN 28-MAR-2021:00:00:00 AND 06-APR-2021:00:00:00 On Hold Comments: Additional Comments: 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 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.0, 0.0 G-284 S 1C-SUB see below (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.39965, G-284 S 1C-SUB see below 0.07586 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.08431, G-284 S 1C-SUB see below 0.10751 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.48396, G-284 S 1C-SUB see below 0.18337 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.16845, G-284 S 1C-SUB see below 0.17497 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.56810, G-284 S 1C-SUB see below 0.25084 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.25276, G-284 S 1C-SUB see below 0.28248 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.65241, G-284 S 1C-SUB see below 0.35835 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.33689, G-284 S 1C-SUB see below 0.34995 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.37904, G-284 S 1C-SUB see below 0.40370 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 16509( 3) - 09-Sep-2021 18:15:00 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 11 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.06372, G-284 S 1C-SUB see below 0.43533 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 12 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.46318, G-284 S 1C-SUB see below 0.47117 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.14564, G-284 S 1C-SUB see below 0.50266 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 14 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.54749, G-284 S 1C-SUB see below 0.57867 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 15 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.23216, G-284 S 1C-SUB see below 0.61030 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.63162, G-284 S 1C-SUB see below 0.64614 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 17 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.31629, G-284 S 1C-SUB see below 0.67777 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 18 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.71592, G-284 S 1C-SUB see below 0.75364 (63 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 | ------------------------------------------------------------------------------------------------------------------------------------ MOA-2019-BLG-284 1 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 2 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 3 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 4 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB 16509( 3) - 09-Sep-2021 18:15:00 - [ 6] 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 | ------------------------------------------------------------------------------------------------------------------------------------ MOA-2019-BLG-284 5 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 6 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 7 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 8 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 9 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 10 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 11 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 12 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 13 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 14 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 15 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 16 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 17 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 18 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB 16509( 3) - 09-Sep-2021 18:15:00 - [ 7] Visit: 02 Visit Requirements: ORIENT 269D TO 269 D; BETWEEN 26-MAY-2021:00:00:00 AND 06-JUN-2021:00:00:00 On Hold Comments: Additional Comments: Target is variable, prior to visit the exposure times should be updated via communication with science team who have access to real-time ground-based photometry. 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 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.0, 0.0 G-284 S 1C-SUB see below (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.39965, G-284 S 1C-SUB see below 0.07586 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.08431, G-284 S 1C-SUB see below 0.10751 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.48396, G-284 S 1C-SUB see below 0.18337 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.16845, G-284 S 1C-SUB see below 0.17497 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.56810, G-284 S 1C-SUB see below 0.25084 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.25276, G-284 S 1C-SUB see below 0.28248 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.65241, G-284 S 1C-SUB see below 0.35835 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.33689, G-284 S 1C-SUB see below 0.34995 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.37904, G-284 S 1C-SUB see below 0.40370 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 16509( 3) - 09-Sep-2021 18:15:00 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 11 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.06372, G-284 S 1C-SUB see below 0.43533 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 12 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.46318, G-284 S 1C-SUB see below 0.47117 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.14564, G-284 S 1C-SUB see below 0.50266 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 14 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.54749, G-284 S 1C-SUB see below 0.57867 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 15 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.23216, G-284 S 1C-SUB see below 0.61030 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.63162, G-284 S 1C-SUB see below 0.64614 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 17 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.31629, G-284 S 1C-SUB see below 0.67777 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 18 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.71592, G-284 S 1C-SUB see below 0.75364 (63 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 | ------------------------------------------------------------------------------------------------------------------------------------ MOA-2019-BLG-284 1 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 2 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 3 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 4 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB 16509( 3) - 09-Sep-2021 18:15:00 - [ 9] 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 | ------------------------------------------------------------------------------------------------------------------------------------ MOA-2019-BLG-284 5 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 6 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 7 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 8 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 9 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 10 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 11 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 12 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 13 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 14 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 15 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 16 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 17 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 18 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB 16509( 3) - 09-Sep-2021 18:15:00 - [ 10] Visit: 03 Visit Requirements: ORIENT 89D TO 89 D; BETWEEN 04-AUG-2021:00:00:00 AND 12-AUG-2021:00:00:00 On Hold Comments: Additional Comments: Target is variable, prior to visit the exposure times should be updated via communication with science team who have access to real-time ground-based photometry. 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 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.0, 0.0 G-284 S 1C-SUB see below (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.39965, G-284 S 1C-SUB see below 0.07586 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.08431, G-284 S 1C-SUB see below 0.10751 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.48396, G-284 S 1C-SUB see below 0.18337 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.16845, G-284 S 1C-SUB see below 0.17497 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.56810, G-284 S 1C-SUB see below 0.25084 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.25276, G-284 S 1C-SUB see below 0.28248 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.65241, G-284 S 1C-SUB see below 0.35835 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.33689, G-284 S 1C-SUB see below 0.34995 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.37904, G-284 S 1C-SUB see below 0.40370 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 16509( 3) - 09-Sep-2021 18:15:00 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 11 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.06372, G-284 S 1C-SUB see below 0.43533 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 12 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.46318, G-284 S 1C-SUB see below 0.47117 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.14564, G-284 S 1C-SUB see below 0.50266 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 14 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.54749, G-284 S 1C-SUB see below 0.57867 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 15 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.23216, G-284 S 1C-SUB see below 0.61030 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.63162, G-284 S 1C-SUB see below 0.64614 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 17 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.31629, G-284 S 1C-SUB see below 0.67777 (63 S) ------------------------------------------------------------------------------------------------------------------------------------ 18 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 60 S POS TARG 0.71592, G-284 S 1C-SUB see below 0.75364 (63 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 | ------------------------------------------------------------------------------------------------------------------------------------ MOA-2019-BLG-284 1 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 2 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 3 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 4 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB 16509( 3) - 09-Sep-2021 18:15:00 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MOA-2019-BLG-284 5 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 6 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 7 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 8 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 9 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 10 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 11 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 12 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 13 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 14 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 15 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 16 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 17 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB MOA-2019-BLG-284 18 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 63.0 S S K1C-SUB 16509( 3) - 09-Sep-2021 18:15:00 - [ 13] Visit: 04 Visit Requirements: ORIENT 89D TO 89 D; BETWEEN 27-SEP-2021:00:00:00 AND 10-OCT-2021:00:00:00 On Hold Comments: Additional Comments: Target is variable, prior to visit the exposure times should be updated via communication with science team who have access to real-time ground-based photometry. 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 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.0, 0.0 G-284 S 1C-SUB see below (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.39965, G-284 S 1C-SUB see below 0.07586 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.08431, G-284 S 1C-SUB see below 0.10751 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.48396, G-284 S 1C-SUB see below 0.18337 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.16845, G-284 S 1C-SUB see below 0.17497 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.56810, G-284 S 1C-SUB see below 0.25084 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.25276, G-284 S 1C-SUB see below 0.28248 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.65241, G-284 S 1C-SUB see below 0.35835 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 9 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.33689, G-284 S 1C-SUB see below 0.34995 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.37904, G-284 S 1C-SUB see below 0.40370 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 16509( 3) - 09-Sep-2021 18:15:00 - [ 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 ------------------------------------------------------------------------------------------------------------------------------------ 11 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.06372, G-284 S 1C-SUB see below 0.43533 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 12 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.46318, G-284 S 1C-SUB see below 0.47117 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.14564, G-284 S 1C-SUB see below 0.50266 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 14 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.54749, G-284 S 1C-SUB see below 0.57867 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 15 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.23216, G-284 S 1C-SUB see below 0.61030 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.63162, G-284 S 1C-SUB see below 0.64614 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 17 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.31629, G-284 S 1C-SUB see below 0.67777 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 18 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.71592, G-284 S 1C-SUB see below 0.75364 (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 19 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.0000, 0.4000 G-284 S 1C-SUB see below (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 20 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.1719, 0.5970 G-284 S 1C-SUB see below (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 21 MOA-2019-BL WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=10 1 39 S POS TARG 0.3437, 0.7542 G-284 S 1C-SUB see below (40 S) ------------------------------------------------------------------------------------------------------------------------------------ 16509( 3) - 09-Sep-2021 18:15:00 - [ 15] 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 | ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ MOA-2019-BLG-284 1 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 2 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 3 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 4 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 5 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 6 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 7 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 8 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 9 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 10 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 11 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 12 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 13 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 14 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 15 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 16 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 17 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 18 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 19 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 20 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB MOA-2019-BLG-284 21 WFC3/UVI ACCUM UVIS2-C1 F814W none none none none 1 40.0 S S K1C-SUB 16509( 3) - 09-Sep-2021 18:15:00 - [ 16] Summary Form for Proposal 16509 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS2-C1K1C-SUB ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=10 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BETWEEN 04-AUG-2021:00:00:00 AND 12-AUG-2021:00:00:00, BETWEEN 26-MAY-2021:00:00:00 AND 06-JUN-2021:00:00:00, BETWEEN 27-SEP-2021:00:00:00 AND 10-OCT-2021:00:00:00, BETWEEN 28-MAR-2021:00:00:00 AND 06-APR-2021:00:00:00, ORIENT 269D TO 269 D, ORIENT 89D TO 89 D, POS TARG 0.0, 0.0, POS TARG 0.0000, 0.4000, POS TARG 0.06372, 0.43533, POS TARG 0.08431, 0.10751, POS TARG 0.14564, 0.50266, POS TARG 0.16845, 0.17497, POS TARG 0.1719, 0.5970, POS TARG 0.23216, 0.61030, POS TARG 0.25276, 0.28248, POS TARG 0.31629, 0.67777, POS TARG 0.33689, 0.34995, POS TARG 0.3437, 0.7542, POS TARG 0.37904, 0.40370, POS TARG 0.39965, 0.07586, POS TARG 0.46318, 0.47117, POS TARG 0.48396, 0.18337, POS TARG 0.54749, 0.57867, POS TARG 0.56810, 0.25084, POS TARG 0.63162, 0.64614, POS TARG 0.65241, 0.35835, POS TARG 0.71592, 0.75364 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names MOA-2019-BLG-284 ------------------------------------------------------------------------------------------------------------------------------------