17780( 22) - 20-Dec-2025 00:07:58 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17780 Version: 22 Check-in Time: 20-Dec-2025 00:07:58 STScI Edit Number: 13 Title Testing The Refractory Sulfur Reservoir Hypothesis with the Next Interstellar Object ------------------------------------------------------------------------------------ Type Cycle GO 32 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. John W Noonan Auburn University Y CoI: Dr. Dennis Bodewits Auburn University N CoI: Dr. Olga Harrington Pinto Auburn University N CoI: Dr. Martin A. Cordiner Catholic University of America N CoI: Dr. Nathan X. Roth American University N CoI: Prof. Jian-Yang Li Sun Yat-Sen University Y CoI: Dr. Davide Farnocchia Jet Propulsion Laboratory N CoI: Dr. Marco Micheli ESA, SSA-NEO Coordination Centre N ------------------------------------------------------------------------------------ Abstract Comets are the leftovers of the era of solar system formation and, as such contain some of the most primitive materials available for study. Interstellar comets allow us to probe the volatile and organic composition of a protoplanetary disk's cold midplane, where sub-mm and IR observations cannot penetrate. Within those disks, sulfur reservoirs are currently a major source of interest in the astrophysics community as less than 0.1% of the cosmic abundance of sulfur can be traced in gas species. Recent studies imply that the missing sulfur is trapped in refractory components, but which minerals are not yet clear. Ejected icy planetesimals offer unique opportunities to investigate sulfur-bearing species that would be locked in ice or dust in the midplane of these protoplanetary disks, revealed by an interstellar object's heating as it enters our solar system. With the imminent first light of LSST it is highly anticipated that several more will be discovered in the next few years. The time domain observations measured with HST COS during the apparition of the first active interstellar comet, 2I/Borisov, resulted in a first picture of the chemical composition of those volatiles present in another planetary system, but were not sensitive to sulfur or sulfur-bearing species. We propose a Target of Opportunity program to observe the next active interstellar object, which has yet to be discovered. We will quantify its CS, S2, and atomic sulfur reservoirs, a combination of species that is unique to HST's far-ultraviolet (FUV) capability, and measure the sulfur-to-oxygen ratio while providing unparalleled sensitivity to the commonly occurring cometary species CO and OH. ------------------------------------------------------------------------------------ Observations Description ------------------------ 1. Overall observational strategy We plan to observe the next active interstellar object with V<15 with two instrument settings, COS G160M CENWAVE 1589 A and STIS G230L, in two temporally separated epochs. The FOV will be centered at the comet. Therefore, we will use the same 4 visit (7 orbit) observing sequence (3 COS visits and one STIS visit) for each epoch. 17780( 22) - 20-Dec-2025 00:07:58 - [ 2] The sequence in each 2-orbit COS visit is: ACQ/IMAGE in NUV MIRROR A with PSA setting, 30 s exposure G160M FP-POS# 1794 s G160M FP-POS# 1794 s ACQ/IMAGE in NUV MIRROR A with PSA setting, 30 s exposure We will alternate the FP positions to cycle through all four FP-POS in each epoch. The first 2 visits in an epoch will cycle through FP-POS 1-4, one FP per orbit. For the third COS visit in each epoch the sequence is: ACQ/IMAGE in NUV MIRROR A with PSA setting, 30 s exposure G160M FP-POS1 897 s G160M FP-POS# 897 s The 3rd visit cycles FP-POS=1 and FP-POS=2 in a single orbit. The trailing ACQ/IMAGE used in for the first and second COS visits is eliminated to improve science overhead. This leads to a total exposure time in FP 1 and 2 each of 2691 s and 1794 s for each FP 3 and 4, for a total exposure time of 8970 s over 5 orbits. The exposure time is based on COS ETC run #COS.sp.1928787. The sequence for each 2-orbit STIS G230L visit is: ACQ in MIRROR with F28X50LP, 3 s exposure G230L with 52X0.5, 1900 s exposure IMAGE in MIRROR with F28X50LP, 3 s G230L with 52X0.5, 19000 s exposure IMAGE in MIRROR with F28X50LP This leads to a total exposure time of 3800s over two orbits. The exposure time is based on STIS ETC run #STIS.sp.1928799 2. Comet position uncertainty and acquisition: Upon discovery the next active interstellar object we will work rapidly to improve the ephemerides uncertainties. If it becomes clear that we should expect a 3-sigma uncertainty in RA or DEC in the range of 1.5" we will replace the primary ACQ/IMAGE in each COS visit with an ACQ/SEARCH pattern to ensure detection. ------------------------------------------------------------------------------------ 17780( 22) - 20-Dec-2025 00:07:58 - [ 3] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 1 TARGET NAME: 3IATLAS ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: COMET Interstellar Object ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 TYPE=COMET, Q=1.356402568640983, E=6.139356333373651, I=175.1130738297457 , O=322.1563556123334, W=128.009728549728, T=29-OCT-2025:11:34:20, TTimeScale=TDB, EQUINOX=J2000, EPOCH=26-JUL-2025:00:00:00, EpochTimeScale=TDB, R0=2.808 , DT=0. , A1=4.586562347412E-7, A2=2.042488479614E-7, A3=0. , ALN=0.1112620426, NM=2.15, NN=5.093, NK=4.6142, AMRAT=0. ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 15 +/- 2 We will trigger our ToO upon the detection of an active ISO, that is, with an hyperbolic orbit with a barycentric eccentricity significantly greater than unity as reported Ephemeris Center: EARTH by the JPL Small-body Database, that has a perihelion Extended: YES within 2 au and reaches at least V=15. Activity will be defined as having a distinct coma upon detection that manifests as a nonstellar point spread function in discovery images and that persists in all follow-up observations. We will coordinate with the JWST ToO team to trigger on the same object and focus HST's capability near perihelion, where JWST may not be able to observe depending on the object's path through the solar system. On July 1, 2025 a new active ISO was discovered inbound; 3I/ATLAS. It was discovered at a V magnitude of ~18 and is expected to reach V~13 just prior to entering the solar keepout zone. ------------------------------------------------------------------------------------------------------------------------------------ 17780( 22) - 20-Dec-2025 00:07:58 - [ 4] TARGET LIST Solar System Targets ------------------------------------------------------------------------------------------------------------------------------------ TARGET NUMBER: 3 TARGET NAME: 3IATLAS-JPL44 ------------------------------------------------------------------------------------------------------------------------------------ TARGET DESCRIPTION: COMET Interstellar Object ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 1 TARGET POSITION LEVEL 2 TYPE=COMET, Q=1.356418761995381, E=6.139422831829797, I=175.1130917268881 , O=322.1566239181344, W=128.0096924001076, T=29-OCT-2025:11:34:23, TTimeScale=TDB, EQUINOX=J2000, EPOCH=07-AUG-2025:00:00:00, EpochTimeScale=TDB, R0=1. , DT=0. , A1=4.572104930878E-8, A2=1.862444758415E-8, A3=-5.019464492798E-9 , ALN=1., NM=2., NN=0., NK=0., AMRAT=0. ------------------------------------------------------------------------------------------------------------------------------------ TARGET POSITION LEVEL 3 WINDOWS ------------------------------------------------------------------------------------------------------------------------------------ DATA COMMENTS V = 15 +/- 2 We will trigger our ToO upon the detection of an active ISO, that is, with an hyperbolic orbit with a barycentric eccentricity significantly greater than unity as reported Ephemeris Center: EARTH by the JPL Small-body Database, that has a perihelion Extended: YES within 2 au and reaches at least V=15. Activity will be defined as having a distinct coma upon detection that manifests as a nonstellar point spread function in discovery images and that persists in all follow-up observations. We will coordinate with the JWST ToO team to trigger on the same object and focus HST's capability near perihelion, where JWST may not be able to observe depending on the object's path through the solar system. On July 1, 2025 a new active ISO was discovered inbound; 3I/ATLAS. It was discovered at a V magnitude of ~18 and is expected to reach V~13 just prior to entering the solar keepout zone. ------------------------------------------------------------------------------------------------------------------------------------ 17780( 22) - 20-Dec-2025 00:07:58 - [ 5] TARGET LIST Generic Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Selection Criteria | Flux data No | Name | Description | | ------------------------------------------------------------------------------------------------------------------------------------ 2 TOOISO SOLAR SYSTEM, COMET ACTIVE INTERSTELLAR COMET V = 15 +/- 2.0 Comments: We will trigger our ToO upon the detection of an active ISO, that is, with an hyperbolic orbit with a barycentric eccentricity significantly greater than unity as reported by the JPL Small-body Database, that has a perihelion within 2 au and reaches at least V=15. Activity will be defined as having a distinct coma upon detection that manifests as a nonstellar point spread function in discovery images and that persists in all follow-up observations. We will coordinate with the JWST ToO team to trigger on the same object and focus HST's capability near perihelion, where JWST may not be able to observe depending on the object's path through the solar system. On July 1, 2025 a new active ISO was discovered inbound; 3I/ATLAS. It was discovered at a V magnitude of ~18 and is expected to reach V~13 just prior to entering the solar keepout zone. ------------------------------------------------------------------------------------------------------------------------------------ 17780( 22) - 20-Dec-2025 00:07:58 - [ 6] Visit: 01 (Epoch 1: FP 1) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 01, 02, 03, 04, 05, 06, 07 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS COS/FUV TIME-TA PSA G160M 1589 FP-POS=1, BUFFER-TIME=10000 1 1200 S G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 7] Visit: 02 (Epoch 1: FP 2) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 02, 01, 03, 04, 05, 06, 07 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS COS/FUV TIME-TA PSA G160M 1589 FP-POS=2, BUFFER-TIME=10000 1 500 S G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 8] Visit: 03 (Epoch 1: FP 3) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 03, 01, 02, 04, 05, 06, 07 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS COS/FUV TIME-TA PSA G160M 1589 FP-POS=3, BUFFER-TIME=10000 1 500 S G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 9] Visit: 04 (Epoch 1: FP 4) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 04, 01, 02, 03, 05, 06, 07 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS COS/FUV TIME-TA PSA G160M 1589 FP-POS=4, BUFFER-TIME=10000 1 500 S G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 10] Visit: 05 (Epoch 1: FP 1) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 05, 01, 02, 03, 04, 06, 07 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS COS/FUV TIME-TA PSA G160M 1589 FP-POS=1, BUFFER-TIME=10000 1 500 S G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 11] Visit: 06 (Epoch 1: G230L) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 06, 01, 02, 03, 04, 05, 07 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS STIS/CCD ACQ F28X50LP MIRROR 1 3 S (3 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=99 1 1100 S -MAMA G see below (1073 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 3IATLAS STIS/CCD ACCUM F28X50LP MIRROR 1 3 S see below (0.2 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 3IATLAS 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1073.0 S -MAMA G 3IATLAS 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 1 1 0.1 S 3IATLAS 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 2 1 0.1 S 17780( 22) - 20-Dec-2025 00:07:58 - [ 12] Visit: 07 (Epoch 1: G230L) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 07, 01, 02, 03, 04, 05, 06 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS STIS/CCD ACQ F28X50LP MIRROR 1 3 S (3 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=99 1 1100 S -MAMA G see below (1073 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 3IATLAS STIS/CCD ACCUM F28X50LP MIRROR 1 3 S see below (0.2 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 3IATLAS 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1073.0 S -MAMA G 3IATLAS 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 1 1 0.1 S 3IATLAS 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 2 1 0.1 S 17780( 22) - 20-Dec-2025 00:07:58 - [ 13] Visit: 08 (Epoch 2: FP 1) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 08, 09, 10, 11, 12, 13, 14 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS COS/FUV TIME-TA PSA G160M 1589 FP-POS=1, BUFFER-TIME=10000 1 500 S G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 14] Visit: 09 (Epoch 2: FP 2) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 09, 08, 10, 11, 12, 13, 14 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS COS/FUV TIME-TA PSA G160M 1589 FP-POS=2, BUFFER-TIME=10000 1 500 S G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 15] Visit: 10 (Epoch 2: FP 3) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 10, 08, 09, 11, 12, 13, 14 WITHIN 7D; SEQ 08, 09, 10, 11, 12, 13, 14 WITHIN 7 D; TOO RESPONSE TIME 21.0D 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 3IATLAS COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS COS/FUV TIME-TA PSA G160M 1589 FP-POS=3, BUFFER-TIME=10000 1 500 S G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 16] Visit: 11 (Epoch 2: FP 4) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 11, 08, 09, 10, 12, 13, 14 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS COS/FUV TIME-TA PSA G160M 1589 FP-POS=4, BUFFER-TIME=10000 1 500 S G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 17] Visit: 12 (Epoch 2: FP 1) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 12, 08, 09, 10, 11, 13, 14 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS COS/FUV TIME-TA PSA G160M 1589 FP-POS=1, BUFFER-TIME=10000 1 500 S G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 18] Visit: 13 (Epoch 2: G230L) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 13, 08, 09, 10, 11, 12, 14 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS STIS/CCD ACQ F28X50LP MIRROR 1 3 S (3 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=99 1 1100 S -MAMA G see below (1073 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 3IATLAS STIS/CCD ACCUM F28X50LP MIRROR 1 3 S see below (0.2 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 3IATLAS 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1073.0 S -MAMA G 3IATLAS 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 1 1 0.1 S 3IATLAS 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 2 1 0.1 S 17780( 22) - 20-Dec-2025 00:07:58 - [ 19] Visit: 14 (Epoch 2: G230L) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; GROUP 14, 08, 09, 10, 11, 12, 13 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS STIS/CCD ACQ F28X50LP MIRROR 1 3 S (3 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=99 1 1100 S -MAMA G see below (1073 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 3IATLAS STIS/CCD ACCUM F28X50LP MIRROR 1 3 S see below (0.2 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 3IATLAS 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1073.0 S -MAMA G 3IATLAS 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 1 1 0.1 S 3IATLAS 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 2 1 0.1 S 17780( 22) - 20-Dec-2025 00:07:58 - [ 20] Visit: 15 (Epoch 2: FP 3) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; TOO RESPONSE TIME 21.0D 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 3IATLAS-JPL COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 44 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS-JPL COS/FUV TIME-TA PSA G160M 1589 FP-POS=3, BUFFER-TIME=10000 1 500 S 44 G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS-JPL44 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS-JPL44 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 21] Visit: 16 (Epoch 2: FP 4) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; TOO RESPONSE TIME 21.0D 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 3IATLAS-JPL COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 44 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS-JPL COS/FUV TIME-TA PSA G160M 1589 FP-POS=4, BUFFER-TIME=10000 1 500 S 44 G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS-JPL44 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS-JPL44 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 22] Visit: 17 (Epoch 2: FP 1) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; TOO RESPONSE TIME 21.0D 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 3IATLAS-JPL COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 44 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS-JPL COS/FUV TIME-TA PSA G160M 1589 FP-POS=1, BUFFER-TIME=10000 1 500 S 44 G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS-JPL44 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS-JPL44 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 23] Visit: 18 (Epoch 2: G230L) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; TOO RESPONSE TIME 21.0D 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 3IATLAS-JPL STIS/CCD ACQ F28X50LP MIRROR 1 3 S (3 S) 44 ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS-JPL STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=99 1 1100 S 44 -MAMA G see below (1073 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 3IATLAS-JPL STIS/CCD ACCUM F28X50LP MIRROR 1 3 S 44 see below (0.2 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS-JPL44 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 3IATLAS-JPL44 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1073.0 S -MAMA G 3IATLAS-JPL44 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 1 1 0.1 S 3IATLAS-JPL44 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 2 1 0.1 S 17780( 22) - 20-Dec-2025 00:07:58 - [ 24] Visit: 19 (Epoch 2: G230L) Visit Requirements: SCHED 100%; BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00; TOO RESPONSE TIME 21.0D 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 3IATLAS-JPL STIS/CCD ACQ F28X50LP MIRROR 1 3 S (3 S) 44 ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS-JPL STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=99 1 1100 S 44 -MAMA G see below (1073 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 3IATLAS-JPL STIS/CCD ACCUM F28X50LP MIRROR 1 3 S 44 see below (0.2 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS-JPL44 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 3IATLAS-JPL44 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1073.0 S -MAMA G 3IATLAS-JPL44 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 1 1 0.1 S 3IATLAS-JPL44 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 2 1 0.1 S 17780( 22) - 20-Dec-2025 00:07:58 - [ 25] Visit: 20 (Epoch 1 Repeat: FP 1) Visit Requirements: SCHED 100%; BEFORE 15-JAN-2026:00:00:00; GROUP 20, 21, 22, 23, 24, 25, 26 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS-JPL COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 44 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS-JPL COS/FUV TIME-TA PSA G160M 1589 FP-POS=1, BUFFER-TIME=10000 1 1200 S 44 G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS-JPL44 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS-JPL44 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 26] Visit: 21 (Epoch 1 Repeat: FP 2) Visit Requirements: SCHED 100%; BEFORE 15-JAN-2026:00:00:00; GROUP 21, 20, 22, 23, 24, 25, 26 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS-JPL COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 44 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS-JPL COS/FUV TIME-TA PSA G160M 1589 FP-POS=2, BUFFER-TIME=10000 1 500 S 44 G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS-JPL44 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS-JPL44 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 27] Visit: 22 (Epoch 1 Repeat: FP 3) Visit Requirements: SCHED 100%; BEFORE 15-JAN-2026:00:00:00; GROUP 22, 20, 21, 23, 24, 25, 26 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS-JPL COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 44 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS-JPL COS/FUV TIME-TA PSA G160M 1589 FP-POS=3, BUFFER-TIME=10000 1 500 S 44 G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS-JPL44 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS-JPL44 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 28] Visit: 23 (Epoch 1 Repeat: FP 4) Visit Requirements: SCHED 100%; BEFORE 15-JAN-2026:00:00:00; GROUP 23, 20, 21, 22, 24, 25, 26 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS-JPL COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 44 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS-JPL COS/FUV TIME-TA PSA G160M 1589 FP-POS=4, BUFFER-TIME=10000 1 500 S 44 G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS-JPL44 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS-JPL44 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 29] Visit: 24 (Epoch 1 Repeat: FP 1) Visit Requirements: SCHED 100%; BEFORE 15-JAN-2026:00:00:00; GROUP 24, 20, 21, 22, 23, 25, 26 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS-JPL COS/NUV ACQ/IMA PSA MIRRORA 1 30 S (30 44 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS-JPL COS/FUV TIME-TA PSA G160M 1589 FP-POS=1, BUFFER-TIME=10000 1 500 S 44 G see below (1423 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS-JPL44 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE 3IATLAS-JPL44 2 COS/FUV TIME-TA PSA G160M 1589 none none none none 1 1423.0 S G 17780( 22) - 20-Dec-2025 00:07:58 - [ 30] Visit: 25 (Epoch 1 Repeat: G230L) Visit Requirements: SCHED 100%; BEFORE 15-JAN-2026:00:00:00; GROUP 25, 20, 21, 22, 23, 24, 26 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS-JPL STIS/CCD ACQ F28X50LP MIRROR 1 3 S (3 S) 44 ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS-JPL STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=99 1 1100 S 44 -MAMA G see below (1073 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 3IATLAS-JPL STIS/CCD ACCUM F28X50LP MIRROR 1 3 S 44 see below (0.2 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS-JPL44 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 3IATLAS-JPL44 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1073.0 S -MAMA G 3IATLAS-JPL44 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 1 1 0.1 S 3IATLAS-JPL44 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 2 1 0.1 S 17780( 22) - 20-Dec-2025 00:07:58 - [ 31] Visit: 26 (Epoch 1 Repeat: G230L) Visit Requirements: SCHED 100%; BEFORE 15-JAN-2026:00:00:00; GROUP 26, 20, 21, 22, 23, 24, 25 WITHIN 7D; TOO RESPONSE TIME 21.0D 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 3IATLAS-JPL STIS/CCD ACQ F28X50LP MIRROR 1 3 S (3 S) 44 ------------------------------------------------------------------------------------------------------------------------------------ 2 3IATLAS-JPL STIS/NUV TIME-TA 52X0.5 G230L 2376 BUFFER-TIME=99 1 1100 S 44 -MAMA G see below (1073 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 3IATLAS-JPL STIS/CCD ACCUM F28X50LP MIRROR 1 3 S 44 see below (0.2 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 3IATLAS-JPL44 1 STIS/CCD ACQ F28X50LP MIRROR none none none none 1 N/A 3IATLAS-JPL44 2 STIS/NUV TIME-TA 52X0.5 G230L 2376 none none none none 1 1073.0 S -MAMA G 3IATLAS-JPL44 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 1 1 0.1 S 3IATLAS-JPL44 3 STIS/CCD ACCUM F28X50LP MIRROR none none none 2 1 0.1 S 17780( 22) - 20-Dec-2025 00:07:58 - [ 32] Summary Form for Proposal 17780 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 52X0.5, F28X50LP, PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV, STIS/CCD, STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ, ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=10000, BUFFER-TIME=99, FP-POS=1, FP-POS=2, FP-POS=3, FP-POS=4 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements BEFORE 15-JAN-2026:00:00:00, BETWEEN 27-NOV-2025:00:00:00 AND 31-DEC-2025:00:00:00, GROUP 01, 02, 03, 04, 05, 06, 07 WITHIN 7D, GROUP 02, 01, 03, 04, 05, 06, 07 WITHIN 7D, GROUP 03, 01, 02, 04, 05, 06, 07 WITHIN 7D, GROUP 04, 01, 02, 03, 05, 06, 07 WITHIN 7D, GROUP 05, 01, 02, 03, 04, 06, 07 WITHIN 7D, GROUP 06, 01, 02, 03, 04, 05, 07 WITHIN 7D, GROUP 07, 01, 02, 03, 04, 05, 06 WITHIN 7D, GROUP 08, 09, 10, 11, 12, 13, 14 WITHIN 7D, GROUP 09, 08, 10, 11, 12, 13, 14 WITHIN 7D, GROUP 10, 08, 09, 11, 12, 13, 14 WITHIN 7D, GROUP 11, 08, 09, 10, 12, 13, 14 WITHIN 7D, GROUP 12, 08, 09, 10, 11, 13, 14 WITHIN 7D, GROUP 13, 08, 09, 10, 11, 12, 14 WITHIN 7D, GROUP 14, 08, 09, 10, 11, 12, 13 WITHIN 7D, GROUP 20, 21, 22, 23, 24, 25, 26 WITHIN 7D, GROUP 21, 20, 22, 23, 24, 25, 26 WITHIN 7D, GROUP 22, 20, 21, 23, 24, 25, 26 WITHIN 7D, GROUP 23, 20, 21, 22, 24, 25, 26 WITHIN 7D, GROUP 24, 20, 21, 22, 23, 25, 26 WITHIN 7D, GROUP 25, 20, 21, 22, 23, 24, 26 WITHIN 7D, GROUP 26, 20, 21, 22, 23, 24, 25 WITHIN 7D, SCHED 100%, SEQ 08, 09, 10, 11, 12, 13, 14 WITHIN 7 D, TOO RESPONSE TIME 21.0D ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G160M, G230L, MIRROR, MIRRORA ------------------------------------------------------------------------------------------------------------------------------------ Target Names 3IATLAS, 3IATLAS-JPL44 ------------------------------------------------------------------------------------------------------------------------------------