18123( 4) - 02-Dec-2025 18:38:17 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 18123 Version: 4 Check-in Time: 02-Dec-2025 18:38:17 STScI Edit Number: 1 Title The most-massive globular cluster in the Fornax dSph to shed light on the mass-budget problem of multiple populations. ------------------------------------------------------------------------------------ Type Cycle GO 33 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Antonino Paolo Milone Universita degli Studi di Padova Y CoI: Dr. Anna Fabiola Marino INAF - Osservatorio Astronomico di Padova N CoI: Dr. Giacomo Cordoni Australian National University N CoI: Dr. Aaron L. Dotter Dartmouth College N CoI: Prof. Chengyuan Li Sun Yat-Sen University N CoI: Dr. Marilia Gabriela Cardoso Universita degli Studi di Padova N Correa Carlos CoI: Prof. E. P. Lagioia Yunnan University N CoI: Dr. Emanuele Dondoglio INAF - Istituto Nazionale di Astrofisica N CoI: Dr. Tailo Marco INAF - Osservatorio Astronomico di Padova N CoI: Dr. Sohee Jang Yonsei University N CoI: Dr. Maria Vittoria Legnardi Universita degli Studi di Padova N CoI: Marco Martorano Ghent University N CoI: Anjana Mohandasan Universita degli Studi di Padova N CoI: Fabrizio Muratore Universita degli Studi di Padova N CoI: Simona Di Stefano Universita degli Studi di Trieste N CoI: Tuila Ziliotto Universita degli Studi di Padova N CoI: Dr. Emanuele Bortolan Universita degli Studi di Padova N ------------------------------------------------------------------------------------ Abstract This proposal is aimed at constraining the mass budget problem related to the multiple populations (MPs) in globular clusters (GCs). Discoveries, largely made by HST, have clarified that MPs are ubiquitous in Milky Way and in Fornax GCs. One of the most acknowledged scenarios predicts that MPs are different stellar generations. To account for the low fractions of first-population stars (1P), which is the mass-budget problem, proto-GCs must have been significantly more massive, with the missing 1P stars lost in the assembly of the Galactic Halo. While MPs have been found in Fornax GCs, there could not be enough stars in the field of this galaxy to account for much more massive proto-GCs. Unless high fractions of 1P stars will suggest that Fornax GCs did not lose significant mass, MPs in Fornax will challenge the multiple-generation scenario. We propose to analyze the MPs in Fornax 3 and obtain, for the first time, the proper photometric diagrams to disentangle 1P and 2P stars and to infer accurate population fractions. With a mass comparable to Galactic GCs, Fornax 3 is ideal to constrain the mass-budget problem. The multiple-generation scenario predicts that the amount of lost 1P stars is higher in massive GCs. Moreover, it is placed in the low-metallicity tail of the field distribution, which comprises a small number of stars. In the end, a low fraction of 1P stars, similar to Milky Way GCs, will challenge the 18123( 4) - 02-Dec-2025 18:38:17 - [ 2] multiple generations scenario. On the contrary, if this scenario is correct, we expect a predominance of 1P stars. In both cases, our results will help in solving the mass budget conundrum. ------------------------------------------------------------------------------------ Observations Description ------------------------ We propose UVIS/WFC3 observations of the distant globular cluster Fornax 3 in the filters F336W, F343N, F438W, and F814W. We centered the cluster in the middle of the UVIS2 detector and dithered the exposures. Observations are split intoo 15 visits to maximize flexibillity. ------------------------------------------------------------------------------------ 18123( 4) - 02-Dec-2025 18:38:17 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NAME-FORNAX- STELLAR CLUSTER, RA=02H39M48.2000S, J2000 V = 15 H3 GLOBULAR CLUSTER DEC=-34D15'26.00" Reference Frame: Other: SIMBAD Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2015.5 0.0 0.0 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 18123( 4) - 02-Dec-2025 18:38:17 - [ 4] Visit: 01 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F814W FLASH=13 1 251 S (251 POS TARG 0, null -H3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F438W FLASH=15 1 778 S (778 POS TARG 0, null -H3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F343N FLASH=21 1 1254 S POS TARG 0, null -H3 S (1254 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F814W none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F438W none none none none 1 N/A S X NAME-FORNAX-H3 3 WFC3/UVI ACCUM UVIS2-FI F343N none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 5] Visit: 02 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F814W FLASH=13 1 251 S (251 POS TARG -3, 0 -H3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F438W FLASH=15 1 778 S (778 POS TARG -3, 0 -H3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F336W FLASH=20 1 1248 S POS TARG -3, 0 -H3 S (1248 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F814W none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F438W none none none none 1 N/A S X NAME-FORNAX-H3 3 WFC3/UVI ACCUM UVIS2-FI F336W none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 6] Visit: 03 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F814W FLASH=13 1 251 S (251 POS TARG 0, -3 -H3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F438W FLASH=15 1 778 S (778 POS TARG 0, -3 -H3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F343N FLASH=21 1 1254 S POS TARG 0, -3 -H3 S (1254 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F814W none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F438W none none none none 1 N/A S X NAME-FORNAX-H3 3 WFC3/UVI ACCUM UVIS2-FI F343N none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 7] Visit: 04 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F814W FLASH=13 1 251 S (251 POS TARG 3, 0 -H3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F438W FLASH=15 1 778 S (778 POS TARG 3, 0 -H3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F336W FLASH=20 1 1248 S POS TARG 3, 0 -H3 S (1248 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F814W none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F438W none none none none 1 N/A S X NAME-FORNAX-H3 3 WFC3/UVI ACCUM UVIS2-FI F336W none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 8] Visit: 05 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F814W FLASH=13 1 251 S (251 POS TARG 0, 3 -H3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F438W FLASH=15 1 778 S (778 POS TARG 0, 3 -H3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F343N FLASH=21 1 1254 S POS TARG 0, 3 -H3 S (1254 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F814W none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F438W none none none none 1 N/A S X NAME-FORNAX-H3 3 WFC3/UVI ACCUM UVIS2-FI F343N none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 9] Visit: 06 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F814W FLASH=13 1 251 S (251 POS TARG 3, 3 -H3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F438W FLASH=15 1 778 S (778 POS TARG 3, 3 -H3 S S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F336W FLASH=20 1 1248 S POS TARG 3, 3 -H3 S (1248 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F814W none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F438W none none none none 1 N/A S X NAME-FORNAX-H3 3 WFC3/UVI ACCUM UVIS2-FI F336W none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 10] Visit: 07 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F343N FLASH=21 1 1234 S POS TARG -5, 0 -H3 S (1234 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F343N FLASH=21 1 1234 S POS TARG 0, -5 -H3 S (1234 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F343N none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F343N none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 11] Visit: 08 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F336W FLASH=20 1 1230 S POS TARG -5, 0 -H3 S (1230 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F336W FLASH=20 1 1230 S POS TARG 0, -5 -H3 S (1230 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F336W none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F336W none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 12] Visit: 09 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F343N FLASH=21 1 1234 S POS TARG 0, 5 -H3 S (1234 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F343N FLASH=21 1 1234 S POS TARG 5, 0 -H3 S (1234 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F343N none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F343N none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 13] Visit: 10 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F336W FLASH=20 1 1230 S POS TARG 0, 5 -H3 S (1230 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F336W FLASH=20 1 1230 S POS TARG 5, 0 -H3 S (1230 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F336W none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F336W none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 14] Visit: 11 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F343N FLASH=21 1 1234 S POS TARG -2, 0 -H3 S (1234 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F343N FLASH=21 1 1234 S POS TARG 0, -2 -H3 S (1234 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F343N none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F343N none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 15] Visit: 12 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F336W FLASH=20 1 1230 S POS TARG -2, 0 -H3 S (1230 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F336W FLASH=20 1 1230 S POS TARG 0, -2 -H3 S (1230 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F336W none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F336W none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 16] Visit: 13 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F343N FLASH=21 1 1234 S POS TARG 0, 2 -H3 S (1234 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F343N FLASH=21 1 1234 S POS TARG 2, 0 -H3 S (1234 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F343N none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F343N none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 17] Visit: 14 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F336W FLASH=20 1 1230 S POS TARG 0, 2 -H3 S (1230 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F336W FLASH=20 1 1230 S POS TARG 2, 0 -H3 S (1230 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F336W none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F336W none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 18] Visit: 15 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 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F343N FLASH=21 1 1234 S POS TARG 5, 5 -H3 S (1234 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NAME-FORNAX WFC3/UVI ACCUM UVIS2-FIX F336W FLASH=20 1 1223 S POS TARG 5, 5 -H3 S (1223 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 | ------------------------------------------------------------------------------------------------------------------------------------ NAME-FORNAX-H3 1 WFC3/UVI ACCUM UVIS2-FI F343N none none none none 1 N/A S X NAME-FORNAX-H3 2 WFC3/UVI ACCUM UVIS2-FI F336W none none none none 1 N/A S X 18123( 4) - 02-Dec-2025 18:38:17 - [ 19] Summary Form for Proposal 18123 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS2-FIX ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=13, FLASH=15, FLASH=20, FLASH=21 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements POS TARG -2, 0, POS TARG -3, 0, POS TARG -5, 0, POS TARG 0, -2, POS TARG 0, -3, POS TARG 0, -5, POS TARG 0, 2, POS TARG 0, 3, POS TARG 0, 5, POS TARG 0, null, POS TARG 2, 0, POS TARG 3, 0, POS TARG 3, 3, POS TARG 5, 0, POS TARG 5, 5 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F336W, F343N, F438W, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names NAME-FORNAX-H3 ------------------------------------------------------------------------------------------------------------------------------------