17467( 7) - 04-Mar-2026 02:43:59 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17467 Version: 7 Check-in Time: 04-Mar-2026 02:43:59 STScI Edit Number: 1 Title An HST + JWST Investigation of Two Protostellar Outflows in Orion: Tracing Jets From 100 au to 100,000 au ------------------------------------------------------------------------------------ Type Cycle GO 31 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Tom Megeath University of Toledo Y CoI: Dr. Dan Watson University of Rochester N CoI: Adam E Rubinstein University of Rochester N CoI: Guillem Anglada Instituto de Astrofisica de Andalucia N (IAA) CoI: Mrs. Prabhani Atnagulov University of Toledo N CoI: Dr. Tyler L Bourke SKA Observatory N CoI: Dr. Neal J. Evans II University of Texas at Austin N CoI: Dr. Sam Federman INAF - Osservatorio Astronomico di N Capodimonte CoI: Dr. William J. Fischer Space Telescope Science Institute N CoI: Dr. Elise Furlan California Institute of Technology N CoI: Dr. Joel David Green Space Telescope Science Institute N CoI: Dr. Robert Gutermuth University of Massachusetts - Amherst N CoI: Dr. Nolan Habel Jet Propulsion Laboratory N CoI: Dr. Lee W. Hartmann University of Michigan N CoI: Dr. Nicole Karnath Space Science Institute N CoI: Prof. Pamela Klaassen United Kingdom Astronomy Technology Centre N CoI: Dr. Hendrik Linz Max Planck Institute for Astronomy N CoI: Dr. Leslie Looney University of Illinois at Urbana - N Champaign CoI: Prof. Manoj Puravankara Tata Institute of Fundamental Research, N Bombay CoI: Dr. Mayank Narang Jet Propulsion Laboratory N CoI: Dr. Mayra Osorio Instituto de Astrofisica de Andalucia N (IAA) CoI: Dr. Riwaj Pokhrel University of Toledo N CoI: Dr. Thomas Stanke Max Planck Institute for Extraterrestrial N Physics CoI: Dr. Amelia Marie Stutz Universidad de Concepcion N CoI: Himanshu Tyagi Tata Institute of Fundamental Research, N Bombay CoI: Dr. John Tobin Associated Universities, Inc. N CoI: Dr. Scott J. Wolk Smithsonian Institution Astrophysical N Observatory ------------------------------------------------------------------------------------ Abstract Leveraging existing JWST IFU and HST WFC3/IR data, we propose to observe the jets of two young protostars in Orion: the low mass protostar HOPS153 and the intermediate mass protostar HOPS 370. Collimated jets from low to intermediate mass protostars shape the IMF and lower the star formation efficiency by carving cavities in the infalling envelopes of gas feeding the protostars. The jets then propagate into the 17467( 7) - 04-Mar-2026 02:43:59 - [ 2] surrounding cloud, stirring up gas, and likely regulating or lowering the rate of star formation in molecular clouds. JWST NIRSpec and MIRI MRS > 3 micron IFU observations of HOPS 153 and 370 shows jets traced by [FeII] in the inner 1200 au of the protostars, with spatial resolutions down to 80 au. At distances of 30, 000 to 100, 000 au from the protostar, where the extinction no longer hides the jets from 1-2 micron observations, the proposed HST WFC3/IR observations will trace shocks in jets launched by these protostars using narrow band filters covering the [FeII] 1.66 and 1.26 micron lines, and the Paschen Beta HI line. By comparing the [FeII] 1.64 um maps to F160W observations from 2010 and 2019, we will measure the proper motion of the shocks. By comparing the [FeII] 1.66 um to Paschen Beta line ratio to models, we will measure the velocity of the pre-shock (jet) gas relative to the shocks. We will also determine the propagation timescale between shocks in the jet, and thereby the interval being accretion events thought to drive the shocks. This program will trace the flow of mass, momentum and energy in jets of representative young protostars from 100 to 100, 000 au, providing new constraints on the role of jets in shaping the IMF and regulating SF. ------------------------------------------------------------------------------------ Observations Description ------------------------ We observe three fields with WFC3/IR, in five narrowband filters necessary to produce continuum subtracted images of [Fe II] 1.26 micron, H I PaBeta 1.28 micron, and [Fe II] 1.64 micron: F126N, F128N, F130N, F164N and F167N. The three fields cover key parts of the HOPS 153 and HOPS 370 outflows and correspond to fields in which there are first-epoch images taken in 2010 using WFC3+F160W. Our baseline observations call for 2400 second exposures for each field and filter. Assuming the crude extinction estimates above, and referring to our model grid, the first-epoch image leads to good estimates of signal-to-noise ratio. Using this information in ETC estimates that S/N should be typically 100-300 for continuum-subtracted compact structures in [Fe II] 1.64 micron in all three fields. Since we will use this wavelength for proper motion measurements, we need S/N to be particularly large (> 100). For the other two lines, S/N is smaller, but is large enough that accurate extinction and shock-speed measurements will result. In HOPS 153 we estimate typical S/N of 100-220 and 50-70 respectively for [Fe II] 1.26 micron and H I PaBeta 1.28 micron. In HOPS 370 we estimate the corresponding S/N ranges to be 50-200 and 30-100. Given that we can observe about 2400 s per orbit, we ask for a program length of 15 orbits. The obsevations are set so that the orientation of the five filters in for each source is the same as the F164N filter. ------------------------------------------------------------------------------------ 17467( 7) - 04-Mar-2026 02:43:59 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 2 HOPS-153-OUT ISM, HERBIG-HARO RA=05H38M10.1969S, J2000 V = 35 FLOW-EAST OBJECT, JET, KNOT, DEC=-07D09'18.67" SHOCK FRONT, STAR FORMING REGION 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 ------------------------------------------------------------------------------------------------------------------------------------ 3 HOPS-153-OUT ISM, HERBIG-HARO RA=05H38M2.8418S, J2000 V = 35 FLOW-WEST OBJECT, JET, KNOT, DEC=-07D07'55.49" SHOCK FRONT, STAR FORMING REGION 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 ------------------------------------------------------------------------------------------------------------------------------------ 4 HOPS370-OUTF ISM, HERBIG-HARO RA=05H35M28.2818S, J2000 V = 35 LOW-NORTH OBJECT, JET, KNOT, DEC=-05D08'55.10" SHOCK FRONT, STAR FORMING REGION 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 ------------------------------------------------------------------------------------------------------------------------------------ 17467( 7) - 04-Mar-2026 02:43:59 - [ 4] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 4 Point_Spacing 1.858 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 41.788 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type WFC3-IR-DITHER-LINE Pattern_Purpose DITHER Number_Of_Points 5 Point_Spacing 1.48655 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 41.788 Angle_Between_Sides Center_Pattern NO ------------------------------------------------------------------------------------------------------------------------------------ 17467( 7) - 04-Mar-2026 02:43:59 - [ 5] 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 HOPS-153-OU WFC3/IR MULTIAC IR F164N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 TFLOW-EAST CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F164N 1 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F164N 2 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F164N 3 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F164N 4 none none none 1 N/A ST CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 6] Visit: 02 Visit Requirements: SAME ORIENT AS 01 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 HOPS-153-OU WFC3/IR MULTIAC IR F167N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 TFLOW-EAST CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F167N 1 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F167N 2 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F167N 3 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F167N 4 none none none 1 N/A ST CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 7] Visit: 03 Visit Requirements: SAME ORIENT AS 01 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 HOPS-153-OU WFC3/IR MULTIAC IR F126N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 TFLOW-EAST CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F126N 1 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F126N 2 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F126N 3 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F126N 4 none none none 1 N/A ST CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 8] Visit: 04 Visit Requirements: SAME ORIENT AS 01 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 HOPS-153-OU WFC3/IR MULTIAC IR F128N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 TFLOW-EAST CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F128N 1 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F128N 2 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F128N 3 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F128N 4 none none none 1 N/A ST CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 9] Visit: 05 Visit Requirements: SAME ORIENT AS 01 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 HOPS-153-OU WFC3/IR MULTIAC IR F130N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 TFLOW-EAST CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F130N 1 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F130N 2 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F130N 3 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-EA 1 WFC3/IR MULTIAC IR F130N 4 none none none 1 N/A ST CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 10] 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 HOPS-153-OU WFC3/IR MULTIAC IR F164N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 TFLOW-WEST CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F164N 1 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F164N 2 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F164N 3 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F164N 4 none none none 1 N/A ST CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 11] Visit: 07 Visit Requirements: SAME ORIENT AS 06 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 HOPS-153-OU WFC3/IR MULTIAC IR F167N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 TFLOW-WEST CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F167N 1 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F167N 2 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F167N 3 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F167N 4 none none none 1 N/A ST CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 12] Visit: 08 Visit Requirements: SAME ORIENT AS 06 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 HOPS-153-OU WFC3/IR MULTIAC IR F126N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 TFLOW-WEST CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F126N 1 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F126N 2 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F126N 3 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F126N 4 none none none 1 N/A ST CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 13] Visit: 09 Visit Requirements: SAME ORIENT AS 06 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 HOPS-153-OU WFC3/IR MULTIAC IR F128N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 TFLOW-WEST CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F128N 1 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F128N 2 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F128N 3 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F128N 4 none none none 1 N/A ST CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 14] Visit: 10 Visit Requirements: SAME ORIENT AS 06 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 HOPS-153-OU WFC3/IR MULTIAC IR F130N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 TFLOW-WEST CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F130N 1 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F130N 2 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F130N 3 none none none 1 N/A ST CUM HOPS-153-OUTFLOW-WE 1 WFC3/IR MULTIAC IR F130N 4 none none none 1 N/A ST CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 15] 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 HOPS370-OUT WFC3/IR MULTIAC IR F164N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 FLOW-NORTH CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F164N 1 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F164N 2 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F164N 3 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F164N 4 none none none 1 N/A TH CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 16] Visit: 12 Visit Requirements: SAME ORIENT AS 11 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 HOPS370-OUT WFC3/IR MULTIAC IR F167N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 FLOW-NORTH CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F167N 1 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F167N 2 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F167N 3 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F167N 4 none none none 1 N/A TH CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 17] Visit: 13 Visit Requirements: SAME ORIENT AS 11 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 HOPS370-OUT WFC3/IR MULTIAC IR F126N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 FLOW-NORTH CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F126N 1 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F126N 2 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F126N 3 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F126N 4 none none none 1 N/A TH CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 18] Visit: 14 Visit Requirements: SAME ORIENT AS 16 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 HOPS370-OUT WFC3/IR MULTIAC IR F128N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 FLOW-NORTH CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F128N 1 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F128N 2 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F128N 3 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F128N 4 none none none 1 N/A TH CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 19] Visit: 15 Visit Requirements: SAME ORIENT AS 16 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 HOPS370-OUT WFC3/IR MULTIAC IR F130N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 FLOW-NORTH CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F130N 1 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F130N 2 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F130N 3 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F130N 4 none none none 1 N/A TH CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 20] Visit: 16 (Visit 11-redo) 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 HOPS370-OUT WFC3/IR MULTIAC IR F164N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 FLOW-NORTH CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F164N 1 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F164N 2 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F164N 3 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F164N 4 none none none 1 N/A TH CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 21] Visit: 17 (Visit 12-redo) Visit Requirements: SAME ORIENT AS 16 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 HOPS370-OUT WFC3/IR MULTIAC IR F167N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 FLOW-NORTH CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F167N 1 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F167N 2 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F167N 3 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F167N 4 none none none 1 N/A TH CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 22] Visit: 18 (visit 13-redo) Visit Requirements: SAME ORIENT AS 16 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 HOPS370-OUT WFC3/IR MULTIAC IR F126N NSAMP=12, SAMP-SEQ=STEP100 1 DEF PATTERN 1 1 FLOW-NORTH CUM (2396.929 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F126N 1 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F126N 2 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F126N 3 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F126N 4 none none none 1 N/A TH CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 23] Visit: 19 (Visit 11-redo) 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 HOPS370-OUT WFC3/IR MULTIAC IR F164N NSAMP=14, SAMP-SEQ=STEP50 1 DEF PATTERN 2 1 FLOW-NORTH CUM (2246.169 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F164N 1 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F164N 2 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F164N 3 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F164N 4 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F164N 5 none none none 1 N/A TH CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 24] Visit: 20 (Visit 12-redo) Visit Requirements: SAME ORIENT AS 16 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 HOPS370-OUT WFC3/IR MULTIAC IR F167N NSAMP=14, SAMP-SEQ=STEP50 1 DEF PATTERN 2 1 FLOW-NORTH CUM (2246.169 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F167N 1 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F167N 2 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F167N 3 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F167N 4 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F167N 5 none none none 1 N/A TH CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 25] Visit: 21 (visit 13-redo) Visit Requirements: SAME ORIENT AS 16 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 HOPS370-OUT WFC3/IR MULTIAC IR F126N NSAMP=14, SAMP-SEQ=STEP50 1 DEF PATTERN 2 1 FLOW-NORTH CUM (2246.169 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F126N 1 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F126N 2 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F126N 3 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F126N 4 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F126N 5 none none none 1 N/A TH CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 26] Visit: 22 (visit 15-redo) Visit Requirements: SAME ORIENT AS 16 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 HOPS370-OUT WFC3/IR MULTIAC IR F130N NSAMP=14, SAMP-SEQ=STEP50 1 DEF PATTERN 2 1 FLOW-NORTH CUM (2246.169 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 | ------------------------------------------------------------------------------------------------------------------------------------ HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F130N 1 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F130N 2 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F130N 3 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F130N 4 none none none 1 N/A TH CUM HOPS370-OUTFLOW-NOR 1 WFC3/IR MULTIAC IR F130N 5 none none none 1 N/A TH CUM 17467( 7) - 04-Mar-2026 02:43:59 - [ 27] Summary Form for Proposal 17467 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures IR ------------------------------------------------------------------------------------------------------------------------------------ Configurations WFC3/IR ------------------------------------------------------------------------------------------------------------------------------------ Opmodes MULTIACCUM ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters NSAMP=12, NSAMP=14, SAMP-SEQ=STEP100, SAMP-SEQ=STEP50 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements PATTERN 1 1, PATTERN 2 1, SAME ORIENT AS 01, SAME ORIENT AS 06, SAME ORIENT AS 11, SAME ORIENT AS 16 ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F126N, F128N, F130N, F164N, F167N ------------------------------------------------------------------------------------------------------------------------------------ Target Names HOPS-153-OUTFLOW-EAST, HOPS-153-OUTFLOW-WEST, HOPS370-OUTFLOW-NORTH ------------------------------------------------------------------------------------------------------------------------------------