17856( 2) - 24-Sep-2024 21:08:27 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17856 Version: 2 Check-in Time: 24-Sep-2024 21:08:27 STScI Edit Number: 0 Title Narrowband Imaging of Caldwell 49 ------------------------------------------------------------------------------------ Type Cycle GO/DD 31 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Christopher Britt Space Telescope Science Institute Y CoI: Ryan Kunzer Space Telescope Science Institute N CoI: Max Mutchler Space Telescope Science Institute Y CoI: John Maple Space Telescope Science Institute N CoI: Varun Bajaj Space Telescope Science Institute Y CoI: Joseph DePasquale Space Telescope Science Institute Y CoI: Alyssa Pagan Space Telescope Science Institute Y CoI: Christine Pulliam Space Telescope Science Institute N CoI: Ray Villard Space Telescope Science Institute N CoI: Dr. Emma Marcucci Space Telescope Science Institute N ------------------------------------------------------------------------------------ Abstract We propose to take deep narrowband imaging of the H II region Caldwell 49. Deep H-alpha, [N II], and [OIII] images in F656N, F658N, and F502N will sample different density and temperature regions within the nebula. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will obtain high signal-to-noise imaging of a portion of the Rosette Nebula in narrow and broadband filters F502N, F656N, F658N, F438W, F555W, and F814W. We propose a single WFC3 pointing which will adequately cover the features shown. In the event of needing to retake a failed visit, we will attempt to match the Position Angle; in the event that this is not possible to schedule in Reduced Gyro Mode, we will crop the image background as necessary so that no part of the publicized image is missing one or more colors. We expect that some visits may need to be repeated because of guide star failures, and will allow for the possibility that some make-up observations may themselves suffer guide-star failures. Dither strategy will be arranged to minimize the impact of variation of the PA. at an orient of 90-120 degrees to maximize the schedulability of make-up observations in the event of guide star failures while balancing the ease of scheduling. This orient is schedulable in multiple windows. We will also employ a dither pattern which fills the chip gaps and enables cosmic ray rejection. The brightest parts of the nebula are up to an order of magnitude brighter than the average surface brightness. Using spectra typical of H-II regions as a guide to emission line ratios, we use the WFC3 ETC to estimate exposure times and find that we can create high signal-to-noise images with 7200s for [N II], 2400s for [O III], and 2400s for H-alpha, with broadband images to color-balance stars in the bookends of each orbit. We therefore request 6 orbits for this target. ------------------------------------------------------------------------------------ 17856( 2) - 24-Sep-2024 21:08:27 - [ 2] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 ROSETTE-NEBU ISM, HII REGION RA=06H30M41.9341S, J2000 V = 12 LA DEC=+04D59'48.20" Reference Frame: ICRS Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. SIMBAD listed proper motion for this target. When retrieving targets with PM from SIMBAD, APT requests the coordinates be calculated with an epoch of the year 2000. Do not modify this epoch. Always review coordinates using the Target Confirmation tool, which graphically displays the PM. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 -1.090812099010025E-4 1.5E-4 6.4E-4 ------------------------------------------------------------------------------------------------------------------------------------ 17856( 2) - 24-Sep-2024 21:08:27 - [ 3] Visit: 01 Visit Requirements: ORIENT 326D TO 336 D 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 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F438W FLASH=20 1 60 S (60 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 2 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F502N FLASH=15 1 800 S (800 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F658N FLASH=15 1 1150 S ULA S ER (1150 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F555W FLASH=15 1 60 S (60 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 5 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F438W FLASH=20 1 60 S (60 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 6 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F656N FLASH=15 1 800 S (800 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 7 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F658N FLASH=15 1 1150 S ULA S ER (1150 S) ------------------------------------------------------------------------------------------------------------------------------------ 8 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F814W FLASH=15 1 60 S (60 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 9 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F438W FLASH=20 1 60 S (60 POS TARG 0.2, 2.5 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 10 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F502N FLASH=15 1 800 S (800 POS TARG 0.2, 2.5 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 11 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F658N FLASH=15 1 1150 S POS TARG 0.2, 2.5 ULA S ER (1150 S) ------------------------------------------------------------------------------------------------------------------------------------ 12 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F555W FLASH=15 1 60 S (60 POS TARG 0.2, 2.5 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 13 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F555W FLASH=15 1 60 S (60 POS TARG 0.2, 2.5 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 14 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F656N FLASH=15 1 800 S (800 POS TARG 0.2, 2.5 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 17856( 2) - 24-Sep-2024 21:08:27 - [ 4] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 15 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F658N FLASH=15 1 1150 S POS TARG 0.2, 2.5 ULA S ER (1150 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F814W FLASH=15 1 60 S (60 POS TARG 0.2, 2.5 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 17 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F438W FLASH=20 1 60 S (60 POS TARG 0.4, 5 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 18 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F502N FLASH=15 1 800 S (800 POS TARG 0.4, 5 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 19 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F658N FLASH=15 1 1150 S POS TARG 0.4, 5 ULA S ER (1150 S) ------------------------------------------------------------------------------------------------------------------------------------ 20 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F814W FLASH=15 1 60 S (60 POS TARG 0.4, 5 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 21 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F555W FLASH=15 1 60 S (60 POS TARG 0.4, 5 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 22 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F656N FLASH=15 1 800 S (800 POS TARG 0.4, 5 ULA S ER S) ------------------------------------------------------------------------------------------------------------------------------------ 23 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F658N FLASH=15 1 1150 S POS TARG 0.4, 5 ULA S ER (1150 S) ------------------------------------------------------------------------------------------------------------------------------------ 24 ROSETTE-NEB WFC3/UVI ACCUM UVIS-CENT F814W FLASH=15 1 60 S (60 POS TARG 0.4, 5 ULA S ER 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 | ------------------------------------------------------------------------------------------------------------------------------------ ROSETTE-NEBULA 1 WFC3/UVI ACCUM UVIS-CEN F438W none none none none 1 N/A S TER ROSETTE-NEBULA 2 WFC3/UVI ACCUM UVIS-CEN F502N none none none none 1 N/A S TER ROSETTE-NEBULA 3 WFC3/UVI ACCUM UVIS-CEN F658N none none none none 1 N/A S TER ROSETTE-NEBULA 4 WFC3/UVI ACCUM UVIS-CEN F555W none none none none 1 N/A S TER ROSETTE-NEBULA 5 WFC3/UVI ACCUM UVIS-CEN F438W none none none none 2 N/A S TER 17856( 2) - 24-Sep-2024 21:08:27 - [ 5] 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 | ------------------------------------------------------------------------------------------------------------------------------------ ROSETTE-NEBULA 6 WFC3/UVI ACCUM UVIS-CEN F656N none none none none 2 N/A S TER ROSETTE-NEBULA 7 WFC3/UVI ACCUM UVIS-CEN F658N none none none none 2 N/A S TER ROSETTE-NEBULA 8 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 2 N/A S TER ROSETTE-NEBULA 9 WFC3/UVI ACCUM UVIS-CEN F438W none none none none 3 N/A S TER ROSETTE-NEBULA 10 WFC3/UVI ACCUM UVIS-CEN F502N none none none none 3 N/A S TER ROSETTE-NEBULA 11 WFC3/UVI ACCUM UVIS-CEN F658N none none none none 3 N/A S TER ROSETTE-NEBULA 12 WFC3/UVI ACCUM UVIS-CEN F555W none none none none 3 N/A S TER ROSETTE-NEBULA 13 WFC3/UVI ACCUM UVIS-CEN F555W none none none none 4 N/A S TER ROSETTE-NEBULA 14 WFC3/UVI ACCUM UVIS-CEN F656N none none none none 4 N/A S TER ROSETTE-NEBULA 15 WFC3/UVI ACCUM UVIS-CEN F658N none none none none 4 N/A S TER ROSETTE-NEBULA 16 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 4 N/A S TER ROSETTE-NEBULA 17 WFC3/UVI ACCUM UVIS-CEN F438W none none none none 5 N/A S TER ROSETTE-NEBULA 18 WFC3/UVI ACCUM UVIS-CEN F502N none none none none 5 N/A S TER ROSETTE-NEBULA 19 WFC3/UVI ACCUM UVIS-CEN F658N none none none none 5 N/A S TER ROSETTE-NEBULA 20 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 5 N/A S TER ROSETTE-NEBULA 21 WFC3/UVI ACCUM UVIS-CEN F555W none none none none 6 N/A S TER ROSETTE-NEBULA 22 WFC3/UVI ACCUM UVIS-CEN F656N none none none none 6 N/A S TER ROSETTE-NEBULA 23 WFC3/UVI ACCUM UVIS-CEN F658N none none none none 6 N/A S TER ROSETTE-NEBULA 24 WFC3/UVI ACCUM UVIS-CEN F814W none none none none 6 N/A S TER 17856( 2) - 24-Sep-2024 21:08:27 - [ 6] Summary Form for Proposal 17856 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures UVIS-CENTER ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/UVIS ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters FLASH=15, FLASH=20 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ORIENT 326D TO 336 D, POS TARG 0.2, 2.5, POS TARG 0.4, 5 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F438W, F502N, F555W, F656N, F658N, F814W ------------------------------------------------------------------------------------------------------------------------------------ Target Names ROSETTE-NEBULA ------------------------------------------------------------------------------------------------------------------------------------