17997( 6) - 01-Apr-2026 13:25:25 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17997 Version: 6 Check-in Time: 01-Apr-2026 13:25:25 STScI Edit Number: 0 Title STELa: Survey of Transiting Exoplanets in Lyman-alpha ------------------------------------------------------------------------------------ Type Cycle GO 33 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. R. O. Parke Loyd Eureka Scientific Inc. Y CoI: Dr. Shreyas Vissapragada Carnegie Institution of Washington N CoI: Dr. James Edward Owen University of California - Los Angeles N CoI: Ethan Schreyer University of California - Santa Cruz N CoI: Dr. Evgenya L. Shkolnik Arizona State University N CoI: Dr. Allison Youngblood NASA Goddard Space Flight Center N CoI: Dr. Travis Stuart Barman University of Arizona N CoI: Dr. Mark Raboin Swain Jet Propulsion Laboratory N CoI: Dr. Akash Gupta Princeton University N CoI: Dr. James Graham Rogers University of Cambridge N CoI: Dr. Mercedes Lopez-Morales Space Telescope Science Institute N CoI: Prof. Hilke E. Schlichting University of California - Los Angeles N CoI: Dr. Ruth A. Murray-Clay University of California - Santa Cruz N CoI: Dr. Leonardo Dos Santos Space Telescope Science Institute N CoI: Dr. Sarah Peacock University of Maryland Baltimore County N CoI: Dr. Girish M. Duvvuri Vanderbilt University N CoI: Dr. David R. Ardila Jet Propulsion Laboratory N ------------------------------------------------------------------------------------ Abstract Atmospheric escape is a key process that sculpts the exoplanetary population, especially for planets smaller than Neptune. Transit observations in the Lyman-alpha line allow for direct studies of atmospheric escape, but progress is reaching the limit of what is possible with small programs targeting one or two new planets at a time. To advance atmospheric escape studies into a new statistical regime, we propose the Survey of Transiting Exoplanets in Lyman-alpha (STELa), a Multi-Cycle Treasury program aimed at efficiently probing atmospheric escape across the entire exoplanetary population using a proven reconnaissance-detection-characterization strategy. STELa's statistical sample will map the role of mass loss throughout the population of known exoplanets, investigate the nature of "transitional" worlds such as those in near radius valley, and probe the physical mechanism driving the atmospheric erosion of sub-Neptunes. A wide array of treasury science will be possible with the STELa dataset, including a new 3D map of the local interstellar medium, the first survey of stellar wind strengths within the astropause, an atlas of host star XUV spectra in the mass-rotation plane, and investigations of exosphere-thermosphere-lower atmosphere connections through synergies with He 10830 and JWST observations. Implementing a broad Lyman-alpha transit survey now is essential to enable the scientific leap from ``stamp collecting'' to population science within the limited remaining life of the only observatory capable of these observations. ------------------------------------------------------------------------------------ Observations Description 17997( 6) - 01-Apr-2026 13:25:25 - [ 2] ------------------------ Stage 2 (Cycle 33) observations will observe the Lya transits of target planets using two visit sets of 2 + 5 exposures. The first visit will establish the pre-transit baseline clear of any early ingress. Following an SAA passage, the second visit will measure transit absorption. May be offset from mid-optical-transit when this is predicted to yield deeper transit absorption due to radial acceleration of the absorption material into the visible blue wing of stellar Lya line. Because Stage 1 (Cycle 32) of the STELa program is ongoing, targets will be added periodically to this program throughout Cycle 33 based on a selection process that relies on Stage 1 observations. STIS G140M observations will be used in most cases, with the aperture chosen for optimal transit SNR based on the target's known Lya emission and the planet's predicted absorption, accounting for instrumental and stellar sources of variability. COS G130M might be used in some cases where the target flux is sufficient that using COS is not expected to significantly degrade Lya SNR, thereby enabling simultaneous measurement of the planetary transit in metal lines. STIS E140M may be used in some instances for detector safety. The program will use the long slit apertures for E140M to facilitate Lya airglow subtraction. ------------------------------------------------------------------------------------ 17997( 6) - 01-Apr-2026 13:25:25 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 TOI-1759 STAR, M V-IV, RA=21H47M24.7901S +/- J2000 V = V = 11.93 +/- 0.1 G=10.83, NUV=20.61 EXTRA-SOLAR PLANETARY 9.299999874201603E-6", -61.33 SYSTEM DEC=+62D45'13.90" +/- 9.299999874201603E-6" Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 -0.02525406948100707 -0.010654 0.0249224 ------------------------------------------------------------------------------------------------------------------------------------ 2 L98-59 STAR, EXTRA-SOLAR RA=08H18M7.6214S, J2000 V = 11.685 PLANET, EXTRA-SOLAR DEC=-68D18'46.81" PLANETARY SYSTEM, M V-IV 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 0.017101451264772163 -0.34008400002676353 0.0942664 ------------------------------------------------------------------------------------------------------------------------------------ 3 TOI-1231 STAR, M V-IV, RA=10H26M59.4940S +/- J2000 V = V = 12.302000045776367 +/- EXTRA-SOLAR PLANETARY 1.3699999726668466E-5", 68.715 0.009999999776482582 G=11.36 SYSTEM DEC=-52D28'9.94" +/- 1.3699999726668466E-5" Reference Frame: ICRS Comments: Predicted Lya flux before ISM absorption 1.8e-14; FUV used for buffer time estimate 24.44; deemed INACTIVE on the basis of age > 1; stellar mass 0.49; stellar Teff 3553.00; no GALEX fuv observation; Rossby number unknown due to no cataloged rotation period; cataloged age of 5 Gyr Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 -0.00978291205797896 0.361546 0.0363896 ------------------------------------------------------------------------------------------------------------------------------------ 17997( 6) - 01-Apr-2026 13:25:25 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 4 HD63935 STAR, G V-IV, RA=07H51M41.9964S +/- J2000 V = V = 8.58 +/- 0.03 G=8.40, NUV=14.68, EXTRA-SOLAR PLANETARY 1.8300001102034003E-5", -21.659 FUV=21.54 SYSTEM DEC=+09D23'9.79" +/- 1.8300001102034003E-5" Reference Frame: ICRS Comments: Predicted Lya flux before ISM absorption 1.2e-13; FUV used for buffer time estimate 21.54; deemed INACTIVE on the basis of age > 1; stellar mass 0.94; stellar Teff 5513.00; GALEX fuv mag = 21.54; Rossby number unknown due to no cataloged rotation period; cataloged age of 7 Gyr Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 -0.0053175925135564555 -0.188512 0.02047 ------------------------------------------------------------------------------------------------------------------------------------ 5 HD42813 STAR, K V-IV, RA=06H12M13.9672S +/- J2000 V = V = 9.470000267028809 +/- EXTRA-SOLAR PLANETARY 9.800000043469481E-6", 81.87 0.019999999552965164 SYSTEM DEC=-14D39'0.06" +/- G=9.282242774963379 9.800000043469481E-6" Reference Frame: ICRS Comments: Predicted Lya flux before ISM absorption 4.1e-14; FUV used for buffer time estimate 26.11; deemed INACTIVE on the basis of Rossby number > 0.5; stellar mass 0.90; stellar Teff 5289.00; no GALEX fuv observation; Rossby number estimate of 3.32 based on measured 40.0 d rotation period; cataloged age of 1e+01 Gyr Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 -0.005452742092853655 0.162696 0.0147065 ------------------------------------------------------------------------------------------------------------------------------------ 6 TOI-421 STAR, G V-IV, RA=05H27M24.8258S +/- J2000 V = V = 9.930000305175781 +/- EXTRA-SOLAR PLANETARY 7.899999218352605E-6", 79.54 0.03999999910593033 G=9.783353805541992 SYSTEM DEC=-14D16'37.05" +/- 7.899999218352605E-6" Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000.0 -0.0024588069578497995 0.050387 0.0133337 ------------------------------------------------------------------------------------------------------------------------------------ 17997( 6) - 01-Apr-2026 13:25:25 - [ 5] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 7 LTT1445A STAR, EXTRA-SOLAR RA=03H01M51.3937S, J2000 V = 10.529 PLANET, EXTRA-SOLAR DEC=-16D35'36.03" PLANETARY SYSTEM, M V-IV 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 -0.025736580118665472 -0.2679309999848556 0.14569220000000002 ------------------------------------------------------------------------------------------------------------------------------------ 17997( 6) - 01-Apr-2026 13:25:25 - [ 6] Patterns ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 1 Primary_Pattern Secondary_Pattern Pattern_Type STIS-ALONG-SLIT Pattern_Purpose BACKGROUND Number_Of_Points 2 Point_Spacing 0.58 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 90.0 Angle_Between_Sides Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ Pattern_Number: 2 Primary_Pattern Secondary_Pattern Pattern_Type LINE Pattern_Purpose BACKGROUND Number_Of_Points 2 Point_Spacing 0.58 Line_Spacing Coordinate_Frame POS-TARG Pattern_Orient 270 Angle_Between_Sides Center_Pattern YES ------------------------------------------------------------------------------------------------------------------------------------ 17997( 6) - 01-Apr-2026 13:25:25 - [ 7] Visit: 01 (TOI-1759 b Baseline) Visit Requirements: SCHED 100% 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 TOI-1759 STIS/CCD ACQ F28X50LP MIRROR 1 0.4 S (0.4 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TOI-1759 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.3 S (0.3 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TOI-1759 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10163, WAVECAL=NO 1 700 S PATTERN 1 3 -MAMA G see below (1502 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 TOI-1759 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.3 S (0.3 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 TOI-1759 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10163, WAVECAL=NO 1 700 S PATTERN 2 6 -MAMA G see below (1660 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOI-1759 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A TOI-1759 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 TOI-1759 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 1 751.0 S -MAMA G TOI-1759 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 1 751.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 1 N/A -MAMA TOI-1759 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 TOI-1759 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 2 830.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 8] 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOI-1759 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 2 830.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 2 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 9] Visit: 02 (TOI-1759 b Transit) Visit Requirements: SCHED 100%; AFTER 01 BY 6 H TO 24 H; Period 18.849975 D AND ZERO-PHASE HJD2458745.4661 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 TOI-1759 STIS/CCD ACQ F28X50LP MIRROR 1 0.4 S (0.4 PHASE 0.9899811980298825 S) TO 0.9944020703829404 ------------------------------------------------------------------------------------------------------------------------------------ 2 TOI-1759 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.3 S (0.3 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TOI-1759 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10163, WAVECAL=NO 1 700 S PATTERN 1 3 -MAMA G see below (1502 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 TOI-1759 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.3 S (0.3 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 TOI-1759 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10163, WAVECAL=NO 1 700 S PATTERN 2 6 -MAMA G see below (1640 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 TOI-1759 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.3 S (0.3 K S) ------------------------------------------------------------------------------------------------------------------------------------ 9 TOI-1759 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10163, WAVECAL=NO 1 700 S PATTERN 1 9 -MAMA G see below (1640 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 11 TOI-1759 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.3 S (0.3 K S) ------------------------------------------------------------------------------------------------------------------------------------ 12 TOI-1759 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10163, WAVECAL=NO 1 700 S PATTERN 2 12 -MAMA G see below (1640 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 10] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 14 TOI-1759 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.3 S (0.3 K S) ------------------------------------------------------------------------------------------------------------------------------------ 15 TOI-1759 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10163, WAVECAL=NO 1 700 S PATTERN 1 15 -MAMA G see below (1660 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOI-1759 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A TOI-1759 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 TOI-1759 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 1 751.0 S -MAMA G TOI-1759 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 1 751.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 1 N/A -MAMA TOI-1759 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 TOI-1759 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 2 820.0 S -MAMA G TOI-1759 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 2 820.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 2 N/A -MAMA TOI-1759 8 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 3 N/A K 1 TOI-1759 9 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 3 820.0 S -MAMA G TOI-1759 9 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 3 820.0 S -MAMA G WAVE 10 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 3 N/A -MAMA TOI-1759 11 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 4 N/A K 1 TOI-1759 12 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 4 820.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 11] 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOI-1759 12 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 4 820.0 S -MAMA G WAVE 13 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 4 N/A -MAMA TOI-1759 14 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 5 N/A K 1 TOI-1759 15 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 5 830.0 S -MAMA G TOI-1759 15 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 5 830.0 S -MAMA G WAVE 16 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 5 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 12] Visit: 03 (L98-59 c Baseline) Visit Requirements: SCHED 100% 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 L98-59 STIS/CCD ACQ F28X50LP MIRROR 1 0.1 S (0.1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 1 3 -MAMA G see below (1492 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 2 6 -MAMA G see below (1654 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ L98-59 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A L98-59 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 L98-59 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 1 746.0 S -MAMA G L98-59 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 1 746.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 1 N/A -MAMA L98-59 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 L98-59 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 2 827.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 13] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ L98-59 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 2 827.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 2 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 14] Visit: 04 (L98-59 c Transit) Visit Requirements: SCHED 100%; AFTER 03 BY 6 H TO 24 H; Period 3.6906764 D AND ZERO-PHASE HJD2458367.27303 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 L98-59 STIS/CCD ACQ F28X50LP MIRROR 1 0.1 S (0.1 PHASE 0.9601190990356131 S) TO 0.9826985192560728 ------------------------------------------------------------------------------------------------------------------------------------ 2 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 1 3 -MAMA G see below (1492 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 2 6 -MAMA G see below (1634 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 9 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 1 9 -MAMA G see below (1634 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 11 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 12 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 2 12 -MAMA G see below (1634 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 15] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 14 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 15 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 1 15 -MAMA G see below (1654 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ L98-59 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A L98-59 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 L98-59 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 1 746.0 S -MAMA G L98-59 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 1 746.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 1 N/A -MAMA L98-59 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 L98-59 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 2 817.0 S -MAMA G L98-59 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 2 817.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 2 N/A -MAMA L98-59 8 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 3 N/A K 1 L98-59 9 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 3 817.0 S -MAMA G L98-59 9 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 3 817.0 S -MAMA G WAVE 10 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 3 N/A -MAMA L98-59 11 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 4 N/A K 1 L98-59 12 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 4 817.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 16] 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 | ------------------------------------------------------------------------------------------------------------------------------------ L98-59 12 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 4 817.0 S -MAMA G WAVE 13 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 4 N/A -MAMA L98-59 14 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 5 N/A K 1 L98-59 15 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 5 827.0 S -MAMA G L98-59 15 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 5 827.0 S -MAMA G WAVE 16 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 5 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 17] Visit: 05 (L98-59 d Baseline) Visit Requirements: SCHED 100% 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 L98-59 STIS/CCD ACQ F28X50LP MIRROR 1 0.1 S (0.1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 1 3 -MAMA G see below (1492 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 2 6 -MAMA G see below (1654 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ L98-59 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A L98-59 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 L98-59 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 1 746.0 S -MAMA G L98-59 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 1 746.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 1 N/A -MAMA L98-59 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 L98-59 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 2 827.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 18] 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 | ------------------------------------------------------------------------------------------------------------------------------------ L98-59 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 2 827.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 2 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 19] Visit: 06 (L98-59 d Transit) Visit Requirements: SCHED 100%; AFTER 05 BY 6 H TO 24 H; Period 7.4507305 D AND ZERO-PHASE HJD2461089.76317600 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 L98-59 STIS/CCD ACQ F28X50LP MIRROR 1 0.1 S (0.1 PHASE 0.9746529328007949 S) TO 0.9858375184375098 ------------------------------------------------------------------------------------------------------------------------------------ 2 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 1 3 -MAMA G see below (1492 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 2 6 -MAMA G see below (1634 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 9 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 1 9 -MAMA G see below (1634 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 11 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 12 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 2 12 -MAMA G see below (1634 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 20] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 14 L98-59 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 15 L98-59 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10171, WAVECAL=NO 1 700 S PATTERN 1 15 -MAMA G see below (1654 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ L98-59 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A L98-59 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 L98-59 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 1 746.0 S -MAMA G L98-59 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 1 746.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 1 N/A -MAMA L98-59 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 L98-59 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 2 817.0 S -MAMA G L98-59 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 2 817.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 2 N/A -MAMA L98-59 8 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 3 N/A K 1 L98-59 9 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 3 817.0 S -MAMA G L98-59 9 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 3 817.0 S -MAMA G WAVE 10 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 3 N/A -MAMA L98-59 11 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 4 N/A K 1 L98-59 12 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 4 817.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 21] 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 | ------------------------------------------------------------------------------------------------------------------------------------ L98-59 12 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 4 817.0 S -MAMA G WAVE 13 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 4 N/A -MAMA L98-59 14 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 5 N/A K 1 L98-59 15 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 5 827.0 S -MAMA G L98-59 15 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 5 827.0 S -MAMA G WAVE 16 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 5 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 22] Visit: 07 (TOI-1231 b Baseline) Visit Requirements: SCHED 100% 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 TOI-1231 STIS/CCD ACQ F28X50LP MIRROR 1 0.1 S (0.1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TOI-1231 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.2 S (0.2 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TOI-1231 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10199, WAVECAL=NO 1 700 S PATTERN 1 3 -MAMA G see below (1488 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 TOI-1231 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.2 S (0.2 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 TOI-1231 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10199, WAVECAL=NO 1 700 S PATTERN 2 6 -MAMA G see below (1646 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOI-1231 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A TOI-1231 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 TOI-1231 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 1 744.0 S -MAMA G TOI-1231 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 1 744.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 1 N/A -MAMA TOI-1231 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 TOI-1231 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 2 823.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 23] 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOI-1231 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 2 823.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 2 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 24] Visit: 08 (TOI-1231 b Transit) Visit Requirements: SCHED 100%; AFTER 07 BY 6 H TO 24 H; Period 24.245586 D AND ZERO-PHASE HJD2458685.1163 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 TOI-1231 STIS/CCD ACQ F28X50LP MIRROR 1 0.1 S (0.1 PHASE 0.99213774 TO S) 0.9955748 ------------------------------------------------------------------------------------------------------------------------------------ 2 TOI-1231 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.2 S (0.2 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TOI-1231 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10199, WAVECAL=NO 1 700 S PATTERN 1 3 -MAMA G see below (1488 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 TOI-1231 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.2 S (0.2 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 TOI-1231 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10199, WAVECAL=NO 1 700 S PATTERN 2 6 -MAMA G see below (1626 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 TOI-1231 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.2 S (0.2 K S) ------------------------------------------------------------------------------------------------------------------------------------ 9 TOI-1231 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10199, WAVECAL=NO 1 700 S PATTERN 1 9 -MAMA G see below (1626 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 11 TOI-1231 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.2 S (0.2 K S) ------------------------------------------------------------------------------------------------------------------------------------ 12 TOI-1231 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10199, WAVECAL=NO 1 700 S PATTERN 2 12 -MAMA G see below (1626 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 25] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 14 TOI-1231 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.2 S (0.2 K S) ------------------------------------------------------------------------------------------------------------------------------------ 15 TOI-1231 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10199, WAVECAL=NO 1 700 S PATTERN 1 15 -MAMA G see below (1646 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOI-1231 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A TOI-1231 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 TOI-1231 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 1 744.0 S -MAMA G TOI-1231 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 1 744.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 1 N/A -MAMA TOI-1231 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 TOI-1231 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 2 813.0 S -MAMA G TOI-1231 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 2 813.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 2 N/A -MAMA TOI-1231 8 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 3 N/A K 1 TOI-1231 9 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 3 813.0 S -MAMA G TOI-1231 9 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 3 813.0 S -MAMA G WAVE 10 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 3 N/A -MAMA TOI-1231 11 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 4 N/A K 1 TOI-1231 12 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 4 813.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 26] 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOI-1231 12 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 4 813.0 S -MAMA G WAVE 13 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 4 N/A -MAMA TOI-1231 14 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 5 N/A K 1 TOI-1231 15 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 5 823.0 S -MAMA G TOI-1231 15 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 5 823.0 S -MAMA G WAVE 16 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 5 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 27] Visit: 09 (HD63935 b Baseline) Visit Requirements: SCHED 100% 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 HD63935 STIS/CCD ACQ F25ND3 MIRROR 1 2.4 S (2.4 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD63935 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 1 3 -MAMA G see below (1326 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 6 HD63935 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 2 6 -MAMA G see below (1558 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD63935 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD63935 2 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 1 N/A K DB HD63935 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 1 663.0 S -MAMA G HD63935 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 1 663.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 1 N/A -MAMA HD63935 5 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 2 N/A K DB HD63935 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 2 779.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 28] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD63935 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 2 779.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 2 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 29] Visit: 10 (HD63935 b Transit) Visit Requirements: SCHED 100%; AFTER 09 BY 6 H TO 24 H; Period 9.0588209 D AND ZERO-PHASE HJD2461093.66057210 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 HD63935 STIS/CCD ACQ F25ND3 MIRROR 1 2.4 S (2.4 PHASE 0.9791524560700094 S) TO 0.9883515929392828 ------------------------------------------------------------------------------------------------------------------------------------ 2 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD63935 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 1 3 -MAMA G see below (1326 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 6 HD63935 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 2 6 -MAMA G see below (1530 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 9 HD63935 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 1 9 -MAMA G see below (1530 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 11 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 12 HD63935 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 2 12 -MAMA G see below (1530 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 30] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 14 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 15 HD63935 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 1 15 -MAMA G see below (1558 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD63935 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD63935 2 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 1 N/A K DB HD63935 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 1 663.0 S -MAMA G HD63935 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 1 663.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 1 N/A -MAMA HD63935 5 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 2 N/A K DB HD63935 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 2 765.0 S -MAMA G HD63935 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 2 765.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 2 N/A -MAMA HD63935 8 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 3 N/A K DB HD63935 9 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 3 765.0 S -MAMA G HD63935 9 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 3 765.0 S -MAMA G WAVE 10 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 3 N/A -MAMA HD63935 11 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 4 N/A K DB HD63935 12 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 4 765.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 31] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD63935 12 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 4 765.0 S -MAMA G WAVE 13 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 4 N/A -MAMA HD63935 14 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 5 N/A K DB HD63935 15 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 5 779.0 S -MAMA G HD63935 15 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 5 779.0 S -MAMA G WAVE 16 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 5 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 32] Visit: 11 (HD63935 c Baseline) Visit Requirements: SCHED 100% 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 HD63935 STIS/CCD ACQ F25ND3 MIRROR 1 2.4 S (2.4 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD63935 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 1 3 -MAMA G see below (1364 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 6 HD63935 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 2 6 -MAMA G see below (1602 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD63935 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD63935 2 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 1 N/A K DB HD63935 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 1 682.0 S -MAMA G HD63935 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 1 682.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 1 N/A -MAMA HD63935 5 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 2 N/A K DB HD63935 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 2 801.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 33] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD63935 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 2 801.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 2 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 34] Visit: 12 (HD63935 c Transit) Visit Requirements: SCHED 100%; AFTER 11 BY 6 H TO 24 H; Period 21.4003129 D AND ZERO-PHASE HJD2461090.99221320 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 HD63935 STIS/CCD ACQ F25ND3 MIRROR 1 2.4 S (2.4 PHASE 0.9931221800032652 S) TO 0.9970162040636954 ------------------------------------------------------------------------------------------------------------------------------------ 2 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD63935 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 1 3 -MAMA G see below (1364 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 6 HD63935 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 2 6 -MAMA G see below (1574 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 9 HD63935 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 1 9 -MAMA G see below (1574 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 11 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 12 HD63935 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 2 12 -MAMA G see below (1574 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 35] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 14 HD63935 STIS/CCD ACQ/PEA 31X0.05ND MIRROR 1 0.1 S (0.1 K B S) ------------------------------------------------------------------------------------------------------------------------------------ 15 HD63935 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10183, WAVECAL=NO 1 500 S PATTERN 1 15 -MAMA G see below (1602 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD63935 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD63935 2 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 1 N/A K DB HD63935 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 1 682.0 S -MAMA G HD63935 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 1 682.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 1 N/A -MAMA HD63935 5 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 2 N/A K DB HD63935 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 2 787.0 S -MAMA G HD63935 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 2 787.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 2 N/A -MAMA HD63935 8 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 3 N/A K DB HD63935 9 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 3 787.0 S -MAMA G HD63935 9 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 3 787.0 S -MAMA G WAVE 10 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 3 N/A -MAMA HD63935 11 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 4 N/A K DB HD63935 12 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 4 787.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 36] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD63935 12 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 4 787.0 S -MAMA G WAVE 13 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 4 N/A -MAMA HD63935 14 STIS/CCD ACQ/PEA 31X0.05N MIRROR none none none none 5 N/A K DB HD63935 15 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 5 801.0 S -MAMA G HD63935 15 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 5 801.0 S -MAMA G WAVE 16 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 5 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 37] Visit: 13 (HD42813 b Baseline) Visit Requirements: SCHED 100% 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 HD42813 STIS/CCD ACQ F25ND3 MIRROR 1 5.5 S (5.5 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 HD42813 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD42813 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10202, WAVECAL=NO 1 500 S PATTERN 1 3 -MAMA G see below (1394 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 HD42813 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 HD42813 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10202, WAVECAL=NO 1 500 S PATTERN 2 6 -MAMA G see below (1640 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD42813 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD42813 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 HD42813 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 1 697.0 S -MAMA G HD42813 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 1 697.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 1 N/A -MAMA HD42813 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 HD42813 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 2 820.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 38] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD42813 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 2 820.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 2 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 39] Visit: 14 (HD42813 b Transit) Visit Requirements: SCHED 100%; AFTER 13 BY 6 H TO 24 H; Period 13.6308205 D AND ZERO-PHASE HJD2458474.56927 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 HD42813 STIS/CCD ACQ F25ND3 MIRROR 1 5.5 S (5.5 PHASE 0.98601515 TO S) 0.99212874 ------------------------------------------------------------------------------------------------------------------------------------ 2 HD42813 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 HD42813 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10202, WAVECAL=NO 1 500 S PATTERN 1 3 -MAMA G see below (1394 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 HD42813 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 HD42813 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10202, WAVECAL=NO 1 500 S PATTERN 2 6 -MAMA G see below (1620 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 HD42813 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 9 HD42813 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10202, WAVECAL=NO 1 500 S PATTERN 1 9 -MAMA G see below (1620 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 11 HD42813 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 12 HD42813 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10202, WAVECAL=NO 1 500 S PATTERN 2 12 -MAMA G see below (1620 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 40] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 14 HD42813 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 15 HD42813 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10202, WAVECAL=NO 1 500 S PATTERN 1 15 -MAMA G see below (1640 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD42813 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A HD42813 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 HD42813 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 1 697.0 S -MAMA G HD42813 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 1 697.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 1 N/A -MAMA HD42813 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 HD42813 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 2 810.0 S -MAMA G HD42813 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 2 810.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 2 N/A -MAMA HD42813 8 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 3 N/A K 1 HD42813 9 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 3 810.0 S -MAMA G HD42813 9 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 3 810.0 S -MAMA G WAVE 10 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 3 N/A -MAMA HD42813 11 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 4 N/A K 1 HD42813 12 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 4 810.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 41] 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 | ------------------------------------------------------------------------------------------------------------------------------------ HD42813 12 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 4 810.0 S -MAMA G WAVE 13 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 4 N/A -MAMA HD42813 14 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 5 N/A K 1 HD42813 15 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 5 820.0 S -MAMA G HD42813 15 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 5 820.0 S -MAMA G WAVE 16 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 5 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 42] Visit: 15 (TOI-421 c Baseline) Visit Requirements: SCHED 100% 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 TOI-421 STIS/CCD ACQ F25ND3 MIRROR 1 8.4 S (8.4 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 TOI-421 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TOI-421 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10207, WAVECAL=NO 1 500 S PATTERN 1 3 -MAMA G see below (1384 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 TOI-421 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 TOI-421 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10207, WAVECAL=NO 1 500 S PATTERN 2 6 -MAMA G see below (1640 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOI-421 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A TOI-421 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 TOI-421 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 1 692.0 S -MAMA G TOI-421 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 1 692.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 1 N/A -MAMA TOI-421 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 TOI-421 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 2 820.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 43] 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOI-421 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 2 820.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 2 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 44] Visit: 16 (TOI-421 c Transit) Visit Requirements: SCHED 100%; AFTER 15 BY 6 H TO 24 H; Period 16.067541 D AND ZERO-PHASE HJD2459195.30741 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 TOI-421 STIS/CCD ACQ F25ND3 MIRROR 1 8.4 S (8.4 PHASE 0.98813602 TO S) 0.99332246 ------------------------------------------------------------------------------------------------------------------------------------ 2 TOI-421 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 TOI-421 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10207, WAVECAL=NO 1 500 S PATTERN 1 3 -MAMA G see below (1384 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 TOI-421 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 TOI-421 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10207, WAVECAL=NO 1 500 S PATTERN 2 6 -MAMA G see below (1620 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 TOI-421 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 9 TOI-421 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10207, WAVECAL=NO 1 500 S PATTERN 1 9 -MAMA G see below (1620 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 11 TOI-421 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 12 TOI-421 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10207, WAVECAL=NO 1 500 S PATTERN 2 12 -MAMA G see below (1620 S) ------------------------------------------------------------------------------------------------------------------------------------ 13 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 45] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------------------------------------------------------ 14 TOI-421 STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 15 TOI-421 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 BUFFER-TIME=10207, WAVECAL=NO 1 500 S PATTERN 1 15 -MAMA G see below (1640 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 WAVE STIS/FUV ACCUM 52X0.2 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOI-421 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A TOI-421 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 TOI-421 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 1 692.0 S -MAMA G TOI-421 3 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 1 692.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 1 N/A -MAMA TOI-421 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 TOI-421 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 2 810.0 S -MAMA G TOI-421 6 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 2 810.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 2 N/A -MAMA TOI-421 8 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 3 N/A K 1 TOI-421 9 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 3 810.0 S -MAMA G TOI-421 9 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 3 810.0 S -MAMA G WAVE 10 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 3 N/A -MAMA TOI-421 11 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 4 N/A K 1 TOI-421 12 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 4 810.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 46] 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 | ------------------------------------------------------------------------------------------------------------------------------------ TOI-421 12 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 4 810.0 S -MAMA G WAVE 13 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 4 N/A -MAMA TOI-421 14 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 5 N/A K 1 TOI-421 15 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 1 none none none 5 820.0 S -MAMA G TOI-421 15 STIS/FUV TIME-TA 52X0.2D1 G140M 1222 2 none none none 5 820.0 S -MAMA G WAVE 16 STIS/FUV ACCUM 52X0.2 G140M 1222 none none none none 5 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 47] Visit: 17 (LTT1445A c Baseline) Visit Requirements: SCHED 100% 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 LTT1445A STIS/CCD ACQ F25ND3 MIRROR 1 7.4 S (7.4 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 LTT1445A STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 LTT1445A STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10118, WAVECAL=NO 1 500 S PATTERN 1 3 -MAMA G see below (1364 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 LTT1445A STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 LTT1445A STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10118, WAVECAL=NO 1 500 S PATTERN 2 6 -MAMA G see below (1620 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ LTT1445A 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A LTT1445A 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 LTT1445A 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 1 682.0 S -MAMA G LTT1445A 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 1 682.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 1 N/A -MAMA LTT1445A 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 LTT1445A 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 2 810.0 S -MAMA G 17997( 6) - 01-Apr-2026 13:25:25 - [ 48] 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 | ------------------------------------------------------------------------------------------------------------------------------------ LTT1445A 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 2 810.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 2 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 49] Visit: 18 (LTT1445A c Transit) Visit Requirements: SCHED 100%; AFTER 17 BY 6 H TO 24 H; Period 3.12389800000 D AND ZERO-PHASE HJD2461109.67490000 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 LTT1445A STIS/CCD ACQ F25ND3 MIRROR 1 7.4 S (7.4 PHASE 0.9528833847968148 S) TO 0.9795594585141171 ------------------------------------------------------------------------------------------------------------------------------------ 2 LTT1445A STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 3 LTT1445A STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10118, WAVECAL=NO 1 500 S PATTERN 1 3 -MAMA G see below (1364 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 5 LTT1445A STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 6 LTT1445A STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10118, WAVECAL=NO 1 500 S PATTERN 2 6 -MAMA G see below (1600 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 8 LTT1445A STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 9 LTT1445A STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10118, WAVECAL=NO 1 500 S PATTERN 1 9 -MAMA G see below (1600 S) ------------------------------------------------------------------------------------------------------------------------------------ 10 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 11 LTT1445A STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 12 LTT1445A STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10118, WAVECAL=NO 1 500 S PATTERN 2 12 -MAMA G see below (1600 S) ------------------------------------------------------------------------------------------------------------------------------------ 17997( 6) - 01-Apr-2026 13:25:25 - [ 50] Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 13 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 14 LTT1445A STIS/CCD ACQ/PEA 52X0.05D1 MIRROR 1 0.1 S (0.1 K S) ------------------------------------------------------------------------------------------------------------------------------------ 15 LTT1445A STIS/FUV TIME-TA 52X0.5D1 G140M 1222 BUFFER-TIME=10118, WAVECAL=NO 1 500 S PATTERN 1 15 -MAMA G see below (1620 S) ------------------------------------------------------------------------------------------------------------------------------------ 16 WAVE STIS/FUV ACCUM 52X0.1 G140M 1222 1 DEF (0 S) -MAMA ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ LTT1445A 1 STIS/CCD ACQ F25ND3 MIRROR none none none none 1 N/A LTT1445A 2 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 1 N/A K 1 LTT1445A 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 1 682.0 S -MAMA G LTT1445A 3 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 1 682.0 S -MAMA G WAVE 4 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 1 N/A -MAMA LTT1445A 5 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 2 N/A K 1 LTT1445A 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 2 800.0 S -MAMA G LTT1445A 6 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 2 800.0 S -MAMA G WAVE 7 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 2 N/A -MAMA LTT1445A 8 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 3 N/A K 1 LTT1445A 9 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 3 800.0 S -MAMA G LTT1445A 9 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 3 800.0 S -MAMA G WAVE 10 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 3 N/A -MAMA LTT1445A 11 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 4 N/A K 1 17997( 6) - 01-Apr-2026 13:25:25 - [ 51] 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 | ------------------------------------------------------------------------------------------------------------------------------------ LTT1445A 12 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 4 800.0 S -MAMA G LTT1445A 12 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 4 800.0 S -MAMA G WAVE 13 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 4 N/A -MAMA LTT1445A 14 STIS/CCD ACQ/PEA 52X0.05D MIRROR none none none none 5 N/A K 1 LTT1445A 15 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 1 none none none 5 810.0 S -MAMA G LTT1445A 15 STIS/FUV TIME-TA 52X0.5D1 G140M 1222 2 none none none 5 810.0 S -MAMA G WAVE 16 STIS/FUV ACCUM 52X0.1 G140M 1222 none none none none 5 N/A -MAMA 17997( 6) - 01-Apr-2026 13:25:25 - [ 52] Summary Form for Proposal 17997 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 31X0.05NDB, 52X0.05D1, 52X0.1, 52X0.2, 52X0.2D1, 52X0.5D1, F25ND3, F28X50LP ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, STIS/FUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ, ACQ/PEAK, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=10118, BUFFER-TIME=10163, BUFFER-TIME=10171, BUFFER-TIME=10183, BUFFER-TIME=10199, BUFFER-TIME=10202, BUFFER-TIME=10207, WAVECAL=NO ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01 BY 6 H TO 24 H, AFTER 03 BY 6 H TO 24 H, AFTER 05 BY 6 H TO 24 H, AFTER 07 BY 6 H TO 24 H, AFTER 09 BY 6 H TO 24 H, AFTER 11 BY 6 H TO 24 H, AFTER 13 BY 6 H TO 24 H, AFTER 15 BY 6 H TO 24 H, AFTER 17 BY 6 H TO 24 H, PATTERN 1 15, PATTERN 1 3, PATTERN 1 9, PATTERN 2 12, PATTERN 2 6, PHASE 0.9528833847968148 TO 0.9795594585141171, PHASE 0.9601190990356131 TO 0.9826985192560728, PHASE 0.9746529328007949 TO 0.9858375184375098, PHASE 0.9791524560700094 TO 0.9883515929392828, PHASE 0.98601515 TO 0.99212874, PHASE 0.98813602 TO 0.99332246, PHASE 0.9899811980298825 TO 0.9944020703829404, PHASE 0.99213774 TO 0.9955748, PHASE 0.9931221800032652 TO 0.9970162040636954, Period 13.6308205 D AND ZERO-PHASE HJD2458474.56927, Period 16.067541 D AND ZERO-PHASE HJD2459195.30741, Period 18.849975 D AND ZERO-PHASE HJD2458745.4661, Period 21.4003129 D AND ZERO-PHASE HJD2461090.99221320, Period 24.245586 D AND ZERO-PHASE HJD2458685.1163, Period 3.12389800000 D AND ZERO-PHASE HJD2461109.67490000, Period 3.6906764 D AND ZERO-PHASE HJD2458367.27303, Period 7.4507305 D AND ZERO-PHASE HJD2461089.76317600, Period 9.0588209 D AND ZERO-PHASE HJD2461093.66057210, SCHED 100% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G140M, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names HD42813, HD63935, L98-59, LTT1445A, TOI-1231, TOI-1759, TOI-421, WAVE ------------------------------------------------------------------------------------------------------------------------------------