16500( 8) - 26-Jul-2021 15:36:45 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 16500 Version: 8 Check-in Time: 26-Jul-2021 15:36:45 STScI Edit Number: 6 Title Probing the Post-genitor System of Calcium-rich Transient SN 2019ehk ------------------------------------------------------------------------------------ Type Cycle GO 28 ------------------------------------------------------------------------------------ Investigators Contact? PI: Mr. Wynn Vicente Jacobson-Galan University of California - Berkeley Y CoI: Dr. Raffaella Margutti University of California - Berkeley N CoI: Prof. Ryan Foley University of California - Santa Cruz N CoI: Dr. Dan Milisavljevic Purdue University N CoI: Dr. Charles Kilpatrick Northwestern University N CoI: Dr. Peter Blanchard Northwestern University N CoI: Prof. Edo Berger Harvard University N CoI: Sebastian Gomez Harvard University N CoI: Giacomo Terreran Northwestern University N ------------------------------------------------------------------------------------ Abstract Supernova (SN) 2019ehk in M100 is the closest known Calcium-rich (Ca-rich) transient and the only object in this class with an X-ray detection. Prompt, high-cadence follow-up of this transient across the EM spectrum, in addition to pre-explosion HST imaging, has indicated that the progenitor star was likely low mass (e.g., white dwarf or <10Msun) and surrounded by dense circumstellar material (CSM) whose geometry/density was capable of producing luminous X-ray emission as well as a double-peaked optical light curve. The close proximity of SN 2019ehk provided the first opportunity to obtain multi-color HST observations out to 400 days post explosion, which revealed a pure radioactive decay power source. Ca-rich transients typically decrease in magnitude rapidly and therefore, prior to SN 2019ehk, their late-time decline rate and power source at t<400 days was unknown. Here we propose multi-color imaging of SN 2019ehk in order to search for emission from a bound remnant white dwarf as predicted by a favored progenitor model for this explosion. Detection and characterization of such a remnant will provide a novel constraint on the progenitors of Ca-rich transients and provide a new window into the explosion itself. Additionally, these observations will provide the best constraints to date on a potential non-degenerate companion star in any thermonuclear SN progenitor system such as Ca-rich SNe. ------------------------------------------------------------------------------------ Observations Description ------------------------ We propose to observe nearby supernova 2019ehk with WFC3/UVIS in filters F555W and F814W in the first of our two allocated orbits. In the second orbit, we will observe SN 2019ehk with WFC3/IR in filter F160W. Our optimal observing window is between 19-April-2021 and 16-May-2021, however, 22-May-2021 to 12-July-2021 is another acceptable scheduling window. We have requested that IR imaging be taken within 3 days of the UVIS imaging orbit. Below is our observing plan for each filter in each orbit: Orbit 1: 16500( 8) - 26-Jul-2021 15:36:45 - [ 2] F555W: Total Exposure time = 1500s; Split into two 750s exposures using WFC3-UVIS-DITHER-LINE pattern F814W: Total Exposure time = 900s; Split into two 450s exposures using WFC3-UVIS-DITHER-LINE pattern Orbit 2: F160W: Eight ~300s individual exposures for each filter using the WFC3-IR-DILTER-BOX-MIN pattern. ------------------------------------------------------------------------------------ 16500( 8) - 26-Jul-2021 15:36:45 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SN2019EHK STAR, SUPERNOVA RA=12H22M56.1300S, J2000 g ~ 28, r ~ 26.5, i/z ~ 24.2 DEC=+15D49'33.60" Reference Frame: Other: SIMBAD Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 16500( 8) - 26-Jul-2021 15:36:45 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-UVIS-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.145 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 46.84 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-BOX-MIN Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.572 Line_Spacing 0.365 Coordinate_Frame POS-TARG Pattern_Orient 18.528 Angle_Between_Sides 74.653 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 16500( 8) - 26-Jul-2021 15:36:45 - [ 5] Visit: 01 (UVIS Orbit) Visit Requirements: BETWEEN 19-APR-2021:00:00:00 AND 16-MAY-2021:00:00:00; BETWEEN 22-MAY-2021:00:00:00 AND 12-JUL-2021:00:00:00 On Hold Comments: Additional Comments: Orbit 1: Filters: F555W, F814W 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 SN2019EHK WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=5 1 450 S PATTERN 1 1-2 S 1C-CTE see below (868 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2019EHK WFC3/UVI ACCUM UVIS2-C1K F555W 1 750 S S 1C-CTE see below (1468 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2019EHK 1 WFC3/UVI ACCUM UVIS2-C1 F814W 1 none none none 1 434.0 S S K1C-CTE SN2019EHK 1 WFC3/UVI ACCUM UVIS2-C1 F814W 2 none none none 1 434.0 S S K1C-CTE SN2019EHK 2 WFC3/UVI ACCUM UVIS2-C1 F555W 1 none none none 1 734.0 S S K1C-CTE SN2019EHK 2 WFC3/UVI ACCUM UVIS2-C1 F555W 2 none none none 1 734.0 S S K1C-CTE 16500( 8) - 26-Jul-2021 15:36:45 - [ 6] Visit: 02 (IR Orbit) Visit Requirements: AFTER 01 BY 1 D TO 3 D; BETWEEN 19-APR-2021:00:00:00 AND 16-MAY-2021:00:00:00; BETWEEN 22-MAY-2021:00:00:00 AND 12-JUL-2021:00:00:00 On Hold Comments: Additional Comments: Orbit 2: IR F160W Filter, wide-8 dither pattern 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 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0, 0 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0.694, 0.048 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 1.388, 0.095 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0.051, 0.620 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0.745, 0.668 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 1.440, 0.716 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0.373, 1.242 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 1.067, 1.289 CUM (277.938 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2019EHK 1 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM 16500( 8) - 26-Jul-2021 15:36:45 - [ 7] 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2019EHK 2 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 3 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 4 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 5 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 6 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 7 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 8 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM 16500( 8) - 26-Jul-2021 15:36:45 - [ 8] Visit: 51 (UVIS Orbit) Visit Requirements: BETWEEN 19-APR-2021:00:00:00 AND 16-MAY-2021:00:00:00; BETWEEN 22-MAY-2021:00:00:00 AND 12-JUL-2021:00:00:00 On Hold Comments: Additional Comments: Orbit 1: Filters: F555W, F814W This is a repeat of failed visit 01. 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 SN2019EHK WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=5 1 450 S PATTERN 1 1-2 S 1C-CTE see below (868 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2019EHK WFC3/UVI ACCUM UVIS2-C1K F555W 1 750 S S 1C-CTE see below (1468 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2019EHK 1 WFC3/UVI ACCUM UVIS2-C1 F814W 1 none none none 1 434.0 S S K1C-CTE SN2019EHK 1 WFC3/UVI ACCUM UVIS2-C1 F814W 2 none none none 1 434.0 S S K1C-CTE SN2019EHK 2 WFC3/UVI ACCUM UVIS2-C1 F555W 1 none none none 1 734.0 S S K1C-CTE SN2019EHK 2 WFC3/UVI ACCUM UVIS2-C1 F555W 2 none none none 1 734.0 S S K1C-CTE 16500( 8) - 26-Jul-2021 15:36:45 - [ 9] Visit: 52 (IR Orbit) Visit Requirements: AFTER 51 BY 1 D TO 3 D; BETWEEN 19-APR-2021:00:00:00 AND 16-MAY-2021:00:00:00; BETWEEN 22-MAY-2021:00:00:00 AND 12-JUL-2021:00:00:00 On Hold Comments: Additional Comments: Orbit 2: IR F160W Filter, wide-8 dither pattern This is a repeat of failed visit 02. 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 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0, 0 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0.694, 0.048 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 1.388, 0.095 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0.051, 0.620 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0.745, 0.668 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 1.440, 0.716 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0.373, 1.242 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 1.067, 1.289 CUM (277.938 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 | ------------------------------------------------------------------------------------------------------------------------------------ 16500( 8) - 26-Jul-2021 15:36:45 - [ 10] 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2019EHK 1 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 2 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 3 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 4 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 5 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 6 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 7 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 8 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM 16500( 8) - 26-Jul-2021 15:36:45 - [ 11] Visit: 61 (UVIS Orbit) Visit Requirements: On Hold Comments: Additional Comments: Orbit 1: Filters: F555W, F814W This is a repeat of failed visit 51 (impacted by safing). 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 SN2019EHK WFC3/UVI ACCUM UVIS2-C1K F814W FLASH=5 1 450 S PATTERN 1 1-2 S 1C-CTE see below (868 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2019EHK WFC3/UVI ACCUM UVIS2-C1K F555W 1 750 S S 1C-CTE see below (1468 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2019EHK 1 WFC3/UVI ACCUM UVIS2-C1 F814W 1 none none none 1 434.0 S S K1C-CTE SN2019EHK 1 WFC3/UVI ACCUM UVIS2-C1 F814W 2 none none none 1 434.0 S S K1C-CTE SN2019EHK 2 WFC3/UVI ACCUM UVIS2-C1 F555W 1 none none none 1 734.0 S S K1C-CTE SN2019EHK 2 WFC3/UVI ACCUM UVIS2-C1 F555W 2 none none none 1 734.0 S S K1C-CTE 16500( 8) - 26-Jul-2021 15:36:45 - [ 12] Visit: 62 (IR Orbit) Visit Requirements: AFTER 61 BY 1 D TO 3 D On Hold Comments: Additional Comments: Orbit 2: IR F160W Filter, wide-8 dither pattern This is a repeat of failed visit 52 (impacted by safing). 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 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0, 0 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0.694, 0.048 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 1.388, 0.095 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0.051, 0.620 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0.745, 0.668 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 1.440, 0.716 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 0.373, 1.242 CUM (277.938 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 SN2019EHK WFC3/IR MULTIAC IR F160W NSAMP=12, SAMP-SEQ=SPARS25 1 DEF POS TARG 1.067, 1.289 CUM (277.938 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2019EHK 1 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM 16500( 8) - 26-Jul-2021 15:36:45 - [ 13] 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 | ------------------------------------------------------------------------------------------------------------------------------------ SN2019EHK 2 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 3 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 4 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 5 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 6 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 7 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM SN2019EHK 8 WFC3/IR MULTIAC IR F160W none none none none 1 N/A CUM 16500( 8) - 26-Jul-2021 15:36:45 - [ 14] Summary Form for Proposal 16500 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR, UVIS2-C1K1C-CTE ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=5, NSAMP=12, SAMP-SEQ=SPARS25 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01 BY 1 D TO 3 D, AFTER 51 BY 1 D TO 3 D, AFTER 61 BY 1 D TO 3 D, BETWEEN 19-APR-2021:00:00:00 AND 16-MAY-2021:00:00:00, BETWEEN 22-MAY-2021:00:00:00 AND 12-JUL-2021:00:00:00, PATTERN 1 1-2, POS TARG 0, 0, POS TARG 0.051, 0.620, POS TARG 0.373, 1.242, POS TARG 0.694, 0.048, POS TARG 0.745, 0.668, POS TARG 1.067, 1.289, POS TARG 1.388, 0.095, POS TARG 1.440, 0.716 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F160W, F555W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names SN2019EHK ------------------------------------------------------------------------------------------------------------------------------------