16258( 7) - 21-Dec-2021 17:28:42 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 16258 Version: 7 Check-in Time: 21-Dec-2021 17:28:42 STScI Edit Number: 2 Title The Environment of the most distant Radio Loud Quasar ------------------------------------------------------------------------------------ Type Cycle GO 28 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Chiara Giulia Mazzucchelli European Southern Observatory - Chile Y CoI: Dr. Roderik Overzier Observatorio Nacional N CoI: Dr. Roberto Decarli INAF-Osservatorio di Astrofisica e Scienza N dello Spazio CoI: Eduardo Banados Max-Planck-Institut fur Astronomie, N Heidelberg CoI: Dr. Fabian Walter Max-Planck-Institut fur Astronomie, N Heidelberg CoI: Dr. Bram Venemans Max-Planck-Institut fur Astronomie, N Heidelberg CoI: Dr. Emanuele Paolo Farina NOIRLab - Gemini North (HI) N CoI: Jan-Torge Schindler Max Planck Institute for Astronomy N CoI: Prof. Joseph Hennawi University of California - Santa Barbara N CoI: Dr. Aaron J. Barth University of California - Irvine N CoI: Ms. Sofia Rojas Max Planck Institute for Astronomy N CoI: Dr. Feige Wang University of Arizona N CoI: Dr. Masafusa Onoue Max Planck Institute for Astronomy N ------------------------------------------------------------------------------------ Abstract High-redshift luminous QSOs (z~6) already host billion solar masses black holes in their centers, and are predicted to live in high-density peaks of the dark matter distribution, surrounded by overdensities of galaxies. Previous searches for Lyman Alpha Emitters (LAEs) with narrow-band (NB) imaging around radio-quiet high-z QSOs did not recover such overdensities. These QSOs redshifts were determined only via broad, high- ionization emission lines in the rest-frame UV, often strongly shifted with respect to the systemic redshifts. Alternatively, radio-loud sources have been commonly found in rich environments, pinpointing the first protoclusters in the universe. Here, we propose HST imaging observations to search for LAEs in the field of PSO172+18, the most distant radio source and the radio loudest QSO at z>6, using a suite of narrow and broad band filters with WFC3 and ACS/WFC. The systemic redshift of PSO172+18, z=6.823+-0.002, is accurately measured from observations of the narrow MgII emission line, and precisely locate the Lyman Alpha emission line in the response of the narrow band filter F953N, uniquely available on board HST. Additionally, we will detect (or derive tight constraints on) the stellar emission 16258( 7) - 21-Dec-2021 17:28:42 - [ 2] of the QSO host galaxy, and search for any potential close (-kpc scale) companion. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will use four filters, i775 (F775W) and z850 (F850LP) with the ACS/WFC instrument, J (F125W) with the WFC3/IR camera, and the narrow band F953N with WFC3/UVIS. We calculate the exposure time using the WFC3/UVIS, WFC3/IR andACS/WFC online Exposure Time Calculators. We will be able to reach our science goals with observations of ~29000s in the F953N filter, with a 3sigma limit magnitude of 25.4 (AB mag). This is accomplished in 15 orbits. On the other hand, we aim to achieve a depth of z850=26.6AB mag at S/N~5. This is achievable in 3 orbits. Additionally, we plan to reach a depth i775= 27.6 AB mag. We can do this, at S/N~5, requiring 4 orbits. Finally, we ask for 3 orbits for J (F125W) observations at a depth comparable to i775 (F125W=27.5 AB mag). We will perform dithering observations in order to cover the regions between the fields of view of WFC3/IR and WFC3/UVIS, using the dithering pattern WFC3-IR-DITHER-BOX-UVIS for WFC3/IR. In order to better sample the PSF in the IR, we also implement a sub-pattern WFC3-IR-DITHER-LINE-3PT for WFC3/IR Dithering will also allow us to cover the gap between the two WFC CCDs, and to better treat bad pixels and cosmic rays. Since we need to cover the same region with all the observations and all the filters with WFC3 and with ACS separately, we restrict the visits with the same cameras to have the same orientation. On the other hand, given the comparable fields of view, leaving free the relative orientation of WFC3 and ACS will only lead to a loss of a maximum of <10% of field of view coverage (in the worst case scenario of a 45deg orientation). This change with respect to Phase 1 was approved by the Telescope Time Review Board following the Change Request 91796 on July 7th 2020. In practice, we achieve our goal for ACS by constraining visits (02) and (03) to have the SAME ORIENT as PSO172_ACS_z1_1 (01); for WFC3/UVIS and WFC3/IR by requiring visits (05) - (09) to have the SAME ORIENT as PSO172_WFC3IR_J (04). As suggested by the Instrument Handbook and by recent documentations (ISR 2020-08), we aim to reach a background level of ~20e- in each WFC3/UVIS F953N observations (to better deal with CTE issues). In order to do this, we opt for one exposure per orbit (texp = 2765s), which produces ~7.8e- of natural background (as per ETC calculations). In order to reach the recommended background level of ~20e-, we also add POSTFLASH=15, [2021-12]: Following problems with scheduling the WFC3 observations due to lack of guiding stars, we have created new visits to replace old visits (4) - (9). We created visits (10) - (24) with WFC3-UVIS F953N filter with only one orbit per visit. We used a WFC3-UVIS-DITHER-LINE pattern, with two exposures per 16258( 7) - 21-Dec-2021 17:28:42 - [ 3] orbit (i.e. per visit). In order to reach a background level of ~20e- in each F953N observations, we add POSTFLASH=17. The natural background with new texp=1313 is indeed ~4.1e- (see linked ETC calculation). To ensure the same orientation as the observations in WFC3-IR, we linked each visit (10) - (24) to have the SAME ORIENT as visit (25). We distribute the observations with WFC3-IR in 3 visits (one orbit per visit), (25) - (27). We link all visits to have the SAME ORIENT as visit (25). We use the new pattern WFC3-IR-DITHER-BOX-UVIS, with no sub-pattern. [2021-12-21]: Following further suggestions by support, we made the following changes. We added WFC3-IR-DITHER-LINE-3PT dither pattern to the IR observations on top of the already used WFC3-IR-DITHER-BOX-UVIS pattern. This was done using the POS-TARG values for the WFC3-IR-DITHER-LINE-3PT pattern (with POS-TARG=(0.00, 0.00), (0.451, 0.403), (0.902, 0.806)) on each orbit/visit such that each IR orbit/visit executes at one of the locations of the WFC3-IR-DITHER-LINE-3PT pattern. Each IR orbit/visit continues to use the WFC3-IR-DITHER-BOX-UVIS pattern. We added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern ((0.00, 0.00), (0.092, 0.098), (0.185, 0.197)) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. We slightly increase the exposure time of F953N from 1313s to 1398s, to reduce the unused orbit time. In order to reach a background level of ~20e- in each F953N observations, we add POSTFLASH=17. The natural background with new texp=1359 is indeed ~4.3e- (see linked ETC calculation). ------------------------------------------------------------------------------------ 16258( 7) - 21-Dec-2021 17:28:42 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 PSO172+18 GALAXY, HIGH REDSHIFT RA=11H29M25.3677S, J2000 V = 24 J(AB) = 20.91 +- 0.11 GALAXY, QSO, QUASAR DEC=+18D46'24.30" Reference Frame: ICRS Comments: Radio-Loud QSO at z=6.823. The reported V-Magnitude is a place-holder (no detection at SN>3 at mag=24). ------------------------------------------------------------------------------------------------------------------------------------ 16258( 7) - 21-Dec-2021 17:28:42 - [ 5] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 2 Point_Spacing 0.146 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 47.17 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type ACS-WFC-DITHER-BOX Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 0.262 Line_Spacing 0.192 Coordinate_Frame POS-TARG Pattern_Orient 18.39 Angle_Between_Sides 68.14 Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 6 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: 7 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-BOX-UVIS Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 23.02 Line_Spacing 35.212 Coordinate_Frame POS-TARG Pattern_Orient 0.713 Angle_Between_Sides 89.287 Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ 16258( 7) - 21-Dec-2021 17:28:42 - [ 6] Visit: 01 (PSO172_ACS_zi_1) Visit Requirements: 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 PSO172+18 ACS/WFC ACCUM WFCENTER F850LP 1 1247 S POS TARG 0.05781833, see below -6.62532482; PATTERN 1 1 (2394 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 PSO172+18 ACS/WFC ACCUM WFCENTER F775W 1 1100 S POS TARG 0.05781833, see below -6.6253248277; PATTERN 2 (4910 S) 2 ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 ACS/WFC ACCUM WFCENTER F850LP 1 none none none 1 1197.0 S PSO172+18 1 ACS/WFC ACCUM WFCENTER F850LP 2 none none none 1 1197.0 S PSO172+18 2 ACS/WFC ACCUM WFCENTER F775W 1 none none none 2 1221.0 S PSO172+18 2 ACS/WFC ACCUM WFCENTER F775W 2 none none none 2 1221.0 S PSO172+18 2 ACS/WFC ACCUM WFCENTER F775W 3 none none none 3 1234.0 S PSO172+18 2 ACS/WFC ACCUM WFCENTER F775W 4 none none none 3 1234.0 S 16258( 7) - 21-Dec-2021 17:28:42 - [ 7] Visit: 02 (PSO172_ACS_zi_2) Visit Requirements: SAME ORIENT AS 01 On Hold Comments: Additional Comments: This ACS visit has the same ORIENT as PSO172_ACS_zi_1 (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 PSO172+18 ACS/WFC ACCUM WFCENTER F850LP 1 1247 S POS TARG 0.05781833, see below -6.62532482; PATTERN 1 1 (2394 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 PSO172+18 ACS/WFC ACCUM WFCENTER F775W 1 1100 S POS TARG 0.05781833, see below -6.62532482; PATTERN 2 2 (4910 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 ACS/WFC ACCUM WFCENTER F850LP 1 none none none 1 1197.0 S PSO172+18 1 ACS/WFC ACCUM WFCENTER F850LP 2 none none none 1 1197.0 S PSO172+18 2 ACS/WFC ACCUM WFCENTER F775W 1 none none none 2 1221.0 S PSO172+18 2 ACS/WFC ACCUM WFCENTER F775W 2 none none none 2 1221.0 S PSO172+18 2 ACS/WFC ACCUM WFCENTER F775W 3 none none none 3 1234.0 S PSO172+18 2 ACS/WFC ACCUM WFCENTER F775W 4 none none none 3 1234.0 S 16258( 7) - 21-Dec-2021 17:28:42 - [ 8] Visit: 03 (PSO172_ACS_z) Visit Requirements: SAME ORIENT AS 01 On Hold Comments: Additional Comments: This ACS visit has the same ORIENT as PSO172_ACS_zi_1 (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 PSO172+18 ACS/WFC ACCUM WFCENTER F850LP 1 1247 S POS TARG 0.05781833, see below -6.62532482; PATTERN 1 1 (2394 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 ACS/WFC ACCUM WFCENTER F850LP 1 none none none 1 1197.0 S PSO172+18 1 ACS/WFC ACCUM WFCENTER F850LP 2 none none none 1 1197.0 S 16258( 7) - 21-Dec-2021 17:28:42 - [ 9] Visit: 10 (PSO172_WFC3UVIS_NB_1_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.00, 0.00) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.00, 0.00; GS S (2626 S) ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 10] Visit: 11 (PSO172_WFC3UVIS_NB_2_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.092, 0.098) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.092, 0.098; S (2626 S) GS ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 11] Visit: 12 (PSO172_WFC3UVIS_NB_3_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.185, 0.197) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.185, 0.197; S (2626 S) GS ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 12] Visit: 13 (PSO172_WFC3UVIS_NB_4_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.00, 0.00) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.00, 0.00; GS S (2626 S) ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 13] Visit: 14 (PSO172_WFC3UVIS_NB_5_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.092, 0.098) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.092, 0.098; S (2626 S) GS ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 14] Visit: 15 (PSO172_WFC3UVIS_NB_6_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.185, 0.197) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.185, 0.197; S (2626 S) GS ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 15] Visit: 16 (PSO172_WFC3UVIS_NB_7_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.00, 0.00) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.00, 0.00; GS S (2626 S) ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 16] Visit: 17 (PSO172_WFC3UVIS_NB_8_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.092, 0.098) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.092, 0.098; S (2626 S) GS ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 17] Visit: 18 (PSO172_WFC3UVIS_NB_9_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.185, 0.197) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.185, 0.197; S (2626 S) GS ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 18] Visit: 19 (PSO172_WFC3UVIS_NB_10_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.00, 0.00) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.00, 0.00; GS S (2626 S) ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 19] Visit: 20 (PSO172_WFC3UVIS_NB_11_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.092, 0.098) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.092, 0.098; S (2626 S) GS ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 20] Visit: 21 (PSO172_WFC3UVIS_NB_12_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25) Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.185, 0.197) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.185, 0.197; S (2626 S) GS ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 21] Visit: 22 (PSO172_WFC3UVIS_NB_13_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.00, 0.00) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.00, 0.00; GS S (2626 S) ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 22] Visit: 23 (PSO172_WFC3UVIS_NB_14_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.092, 0.098) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.092, 0.098; S (2626 S) GS ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 23] Visit: 24 (PSO172_WFC3UVIS_NB_15_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/UVIS visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-UVIS-DITHER-LINE-3PT dither pattern to the UVIS observations on top of the already used WFC3-UVIS-DITHER-LINE pattern. This was done using the POS-TARG values for the WFC3-UVIS-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each UVIS orbit/visit executes at one of the locations of the WFC3-UVIS-DITHER-LINE-3PT pattern. Each UVIS orbit/visit continues to use the WFC3-UVIS-DITHER-LINE pattern. This reduces the repetitions in UV pointings from 15 times down to 5 times. This orbit/visit uses POS-TARGs: (0.185, 0.197) 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 PSO172+18 WFC3/UVI ACCUM UVIS-FIX F953N FLASH=17.0 1 1313 S POS TARG 0.185, 0.197; S (2626 S) GS ACQ SCENARIO SINGLE; PATTERN 6 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 1 none none none 1 N/A S PSO172+18 1 WFC3/UVI ACCUM UVIS-FIX F953N 2 none none none 1 N/A S 16258( 7) - 21-Dec-2021 17:28:42 - [ 24] Visit: 25 (PSO172_WFC3IR_J_1_1ORBIT) Visit Requirements: On Hold Comments: Additional Comments: [Suggestion on 2021-12-21] Added WFC3-IR-DITHER-LINE-3PT dither pattern to the IR pbservations on top of the already used WFC3-IR-DITHER-BOX-UVIS pattern. This was done using the POS-TARG values for the WFC3-IR-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each IR orbit/visit executes at one of the locations of the WFC3-IR-DITHER-LINE-3PT pattern. Each IR orbit/visit continues to use the WFC3-IR-DITHER-BOX-UVIS pattern. This orbit/visit uses POS-TARGs: (0.00, 0.00) 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 PSO172+18 WFC3/IR MULTIAC IR-UVIS-F F125W NSAMP=7, SAMP-SEQ=SPARS100 1 DEF POS TARG 0.00, 0.00; GS CUM IX (2411.737 ACQ SCENARIO SINGLE; S) PATTERN 7 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/IR MULTIAC IR-UVIS- F125W 1 none none none 1 N/A CUM FIX PSO172+18 1 WFC3/IR MULTIAC IR-UVIS- F125W 2 none none none 1 N/A CUM FIX PSO172+18 1 WFC3/IR MULTIAC IR-UVIS- F125W 3 none none none 1 N/A CUM FIX PSO172+18 1 WFC3/IR MULTIAC IR-UVIS- F125W 4 none none none 1 N/A CUM FIX 16258( 7) - 21-Dec-2021 17:28:42 - [ 25] Visit: 26 (PSO172_WFC3IR_J_2_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/IR visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-IR-DITHER-LINE-3PT dither pattern to the IR pbservations on top of the already used WFC3-IR-DITHER-BOX-UVIS pattern. This was done using the POS-TARG values for the WFC3-IR-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each IR orbit/visit executes at one of the locations of the WFC3-IR-DITHER-LINE-3PT pattern. Each IR orbit/visit continues to use the WFC3-IR-DITHER-BOX-UVIS pattern. This orbit/visit uses POS-TARGs: (0.451, 0.403) 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 PSO172+18 WFC3/IR MULTIAC IR-UVIS-F F125W NSAMP=7, SAMP-SEQ=SPARS100 1 DEF POS TARG 0.451, 0.403; CUM IX (2411.737 GS ACQ SCENARIO SINGLE; S) PATTERN 7 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/IR MULTIAC IR-UVIS- F125W 1 none none none 1 N/A CUM FIX PSO172+18 1 WFC3/IR MULTIAC IR-UVIS- F125W 2 none none none 1 N/A CUM FIX PSO172+18 1 WFC3/IR MULTIAC IR-UVIS- F125W 3 none none none 1 N/A CUM FIX PSO172+18 1 WFC3/IR MULTIAC IR-UVIS- F125W 4 none none none 1 N/A CUM FIX 16258( 7) - 21-Dec-2021 17:28:42 - [ 26] Visit: 27 (PSO172_WFC3IR_J_3_1ORBIT) Visit Requirements: SAME ORIENT AS 25 On Hold Comments: Additional Comments: This WFC3/IR visit has the same ORIENT as PSO172_WFC3IR_J_1_1ORBIT (25). Added WFC3-IR-DITHER-LINE-3PT dither pattern to the IR pbservations on top of the already used WFC3-IR-DITHER-BOX-UVIS pattern. This was done using the POS-TARG values for the WFC3-IR-DITHER-LINE-3PT pattern (given in Table C.3 of WFC3 IHB; https://hst-docs.stsci.edu/wfc3ihb/appendix-c-dithering-and-mosaicking/c-2-wfc3-patterns) on each orbit/visit such that each IR orbit/visit executes at one of the locations of the WFC3-IR-DITHER-LINE-3PT pattern. Each IR orbit/visit continues to use the WFC3-IR-DITHER-BOX-UVIS pattern. This orbit/visit uses POS-TARGs: (0.902, 0.806) 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 PSO172+18 WFC3/IR MULTIAC IR-UVIS-F F125W NSAMP=7, SAMP-SEQ=SPARS100 1 DEF POS TARG 0.902, 0.806; CUM IX (2411.737 GS ACQ SCENARIO SINGLE; S) PATTERN 7 1 ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ PSO172+18 1 WFC3/IR MULTIAC IR-UVIS- F125W 1 none none none 1 N/A CUM FIX PSO172+18 1 WFC3/IR MULTIAC IR-UVIS- F125W 2 none none none 1 N/A CUM FIX PSO172+18 1 WFC3/IR MULTIAC IR-UVIS- F125W 3 none none none 1 N/A CUM FIX PSO172+18 1 WFC3/IR MULTIAC IR-UVIS- F125W 4 none none none 1 N/A CUM FIX 16258( 7) - 21-Dec-2021 17:28:42 - [ 27] Summary Form for Proposal 16258 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR-UVIS-FIX, UVIS-FIX, WFCENTER ------------------------------------------------------------------------------------------------------------------------------------ Configurations ACS/WFC, WFC3/IR, WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=17.0, NSAMP=7, SAMP-SEQ=SPARS100 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements GS ACQ SCENARIO SINGLE, PATTERN 1 1, PATTERN 2 2, PATTERN 6 1, PATTERN 7 1, POS TARG 0.00, 0.00, POS TARG 0.05781833, -6.62532482, POS TARG 0.05781833, -6.6253248277, POS TARG 0.092, 0.098, POS TARG 0.185, 0.197, POS TARG 0.451, 0.403, POS TARG 0.902, 0.806, SAME ORIENT AS 01, SAME ORIENT AS 25 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F125W, F775W, F850LP, F953N ------------------------------------------------------------------------------------------------------------------------------------ Target Names PSO172+18 ------------------------------------------------------------------------------------------------------------------------------------