17305( 7) - 15-Dec-2023 18:46:37 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17305 Version: 7 Check-in Time: 15-Dec-2023 18:46:37 STScI Edit Number: 3 Title An X-ray through Radio Exo-Space Weather Campaign to Study the Infant Sun DS Tuc ------------------------------------------------------------------------------------ Type Cycle GO/DD 30 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Kevin France University of Colorado at Boulder Y CoI: Dr. Vladimir Airapetian American University N ------------------------------------------------------------------------------------ Abstract We propose to obtain COS spectra in support of an approved, international, multi-wavelength campaign to constrain the space weather conditions of the early proto-solar system. The focus of the proposed study is the magnetic activity of the young (45 Myr) Sun-like star, DS Tuc A. This nearby star thought to be an ideal proxy of the infant Sun at a near-zero-age main-sequence epoch, when the Earth's atmosphere transitioned from the primary to the secondary nitrogen and carbon dioxide rich atmosphere. Thus, the knowledge of the stellar ionizing radiation in the form of quiescent and flare X-ray and EUV emission, stellar wind and CME pressure that can affect the atmospheric escape and its chemistry is of critical importance for the study of early Venus, Earth and Mars environments. DS Tuc A, which is also exemplary for very young stars in its hosting of a transiting planet, is the subject of an approved ground-based, TESS, and NICER campaign that will occur in August 2023. We request director's discretionary time observations with COS to obtain simultaneous FUV spectra of this exemplar system to provide a physically consistent picture of the drivers and outputs of the magnetically driven stellar coronal and wind structures of infant suns. We will use these observations as inputs to a fully thermodynamic model of the corona-wind system of DS Tuc using the AWSoM code. AWSoM will output the missing EUV and stellar wind parameters that are required to predict the atmospheric evolution of terrestrial planets orbiting young suns. ------------------------------------------------------------------------------------ Observations Description ------------------------ FUV Spectroscopy with COS: The HST data will use COS with G130M, CENWAVE=1291 to record the emission lines of C III (117.5 nm), Si III (120.6 nm), N V (123.8nm), C I (132.9nm), C II (133.5 nm), Fe XXI (135.4nm), O V (137.1nm), O IV] (140.1nm), and Si IV (139.4, 140.3 nm). To resolve the physical processes relevant to chromospheric and coronal heating, we require R |*| 15, 000. To constrain the stellar wind density of DS Tuc A, we require signal-to-noise ~8 per resolution element at the peak of the O IV] 140 nm line. We used archival spectra of the young G-type stars EK Dra and |*| Boo A [19, 20] to compute S/N estimates 17305( 7) - 15-Dec-2023 18:46:37 - [ 2] for DS Tuc A. We assumed the flux of EK Dra, scaled by the distance to DS Tuc, and then divided by a factor of two to add margin for the slight stellar mass difference between the two stars. Using the on-line STScI ETC, we estimate that 7, 700 seconds (~three orbits) per visit will be sufficient for detection of S/N |*| 8 per resolution element in the peak of the densitysensitive O IV] features (COS.sp.1841043). This 3-orbit exposure time ensures high S/N in all of the other lines of interest: S/N between 10 and 20 in the peak of several C I lines and Fe XXI (COS.sp.1841045), S/N between 20 and 30 in N V (COS.sp.1841047) and S/N > 35 in Si III, C II, and Si IV (COS.sp.1841044). This high-fidelity spectrum will allow us to identify temporal variability and will provide robust line-fit measurements of thermal and non-thermal widths and line kinematics (Figure 2 below illustrates the line-profile measurements that will be conducted on these data; this example was constructed from archival observations of EK Dra, [20]). The approved ground-based, TESS, and NICER programs will follow DS Tuc A over several rotation periods (DS Tuc A|*|s rotation period is 2.85 days) in August 2023. To explore the connection between time-variable phenomena (flares, CMEs) with magnetic surface topology and X-ray output, we request four epochs spread over two rotation periods; the four visits covering a stellar rotation period is a simplified version of the observing cadence adopted for the ULLYSES monitoring stars [21]. Breaking the total observing period into four visits also maximizes the chance of successful coordination with the ground-based observations; multi-wavelength observations of transient stellar phenomena is the crux of this proposal and the requested HST observing cadence has been tailored accordingly. Therefore, the total time request for this GO proposal is 3 orbits x 4 visits = 12 orbits. Target Acquisition: We did a quantitative ETC target acquisition calculation using the STScI online tools, we scaled a Kurucz G8 V atmosphere model to V-magnitude of V = 8.23, and we find that an exposure time of approximately 7.4s are required (COS.ta.1841052), using an imaging target acquisition in BOA+MIRRORA. Instrument Safety: The same ETC calculations presented above (COS.sp.1841051) 17305( 7) - 15-Dec-2023 18:46:37 - [ 3] find no bright object violations using the COS G130M 1291 mode, therefore these observations present no risk to the instrument and are consistent with the COS 2025 observing guidelines. ------------------------------------------------------------------------------------ 17305( 7) - 15-Dec-2023 18:46:37 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 DS-TUC-A EXT-STAR, EXTRA-SOLAR RA=23H39M39.4808S +/- 0.1", J2000 V = V = 8.226 PLANETARY SYSTEM, G DEC=-69D11'44.71" +/- 0.1" 7.785 V-IV Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2016.0 0.014927611885390706 -0.067551 0.0226367 ------------------------------------------------------------------------------------------------------------------------------------ 17305( 7) - 15-Dec-2023 18:46:37 - [ 5] Visit: 01 Visit Requirements: SCHED 100%; BETWEEN 14-NOV-2023:19:00:00 AND 17-NOV-2023:00:00:00 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 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 1 1.0 S (1 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 NUM-POS=5, STEP-SIZE=0.9, 1 1.0 S (1 KD CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2075 S G (2075 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=4 1 2485 S G (2485 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2485 S G (2485 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 | ------------------------------------------------------------------------------------------------------------------------------------ DS-TUC-A 1 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KXD DS-TUC-A 2 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KD DS-TUC-A 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G DS-TUC-A 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G DS-TUC-A 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 N/A G 17305( 7) - 15-Dec-2023 18:46:37 - [ 6] Visit: 02 Visit Requirements: SCHED 100%; AFTER 01 BY 12 H TO 60 H 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 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 1 1.0 S (1 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 NUM-POS=5, STEP-SIZE=0.9, 1 1.0 S (1 KD CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2670 S G see below (2075 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=4 1 3030 S G see below (2485 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2310 S G see below (2485 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 | ------------------------------------------------------------------------------------------------------------------------------------ DS-TUC-A 1 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KXD DS-TUC-A 2 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KD DS-TUC-A 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 2075.0 S G DS-TUC-A 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 2485.0 S G DS-TUC-A 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 2485.0 S G 17305( 7) - 15-Dec-2023 18:46:37 - [ 7] Visit: 03 Visit Requirements: SCHED 100%; AFTER 02 BY 12 H TO 60 H 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 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 1 1.0 S (1 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 NUM-POS=5, STEP-SIZE=0.9, 1 1.0 S (1 KD CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2500 S G see below (2075 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=4 1 2230 S G see below (2485 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2310 S G see below (2485 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 | ------------------------------------------------------------------------------------------------------------------------------------ DS-TUC-A 1 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KXD DS-TUC-A 2 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KD DS-TUC-A 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 2075.0 S G DS-TUC-A 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 2485.0 S G DS-TUC-A 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 2485.0 S G 17305( 7) - 15-Dec-2023 18:46:37 - [ 8] Visit: 04 Visit Requirements: SCHED 100%; AFTER 03 BY 12 H TO 60 H 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 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 1 1.0 S (1 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 NUM-POS=5, STEP-SIZE=0.9, 1 1.0 S (1 KD CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 1955 S G see below (2075 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=4 1 2320 S G see below (2485 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2310 S G see below (2485 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 | ------------------------------------------------------------------------------------------------------------------------------------ DS-TUC-A 1 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KXD DS-TUC-A 2 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KD DS-TUC-A 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 2075.0 S G DS-TUC-A 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 2485.0 S G DS-TUC-A 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 2485.0 S G 17305( 7) - 15-Dec-2023 18:46:37 - [ 9] Visit: Z1 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 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 1 1.0 S (1 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 NUM-POS=5, STEP-SIZE=0.9, 1 1.0 S (1 KD CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2075 S G (2075 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=4 1 2485 S G (2485 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2485 S G (2485 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 | ------------------------------------------------------------------------------------------------------------------------------------ DS-TUC-A 1 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KXD DS-TUC-A 2 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KD DS-TUC-A 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 N/A G DS-TUC-A 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 N/A G DS-TUC-A 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 N/A G 17305( 7) - 15-Dec-2023 18:46:37 - [ 10] Visit: Z2 Visit Requirements: SCHED 100%; AFTER Z1 BY 12 H TO 60 H 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 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 1 1.0 S (1 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 NUM-POS=5, STEP-SIZE=0.9, 1 1.0 S (1 KD CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2670 S G see below (2075 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=4 1 3030 S G see below (2485 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2310 S G see below (2485 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 | ------------------------------------------------------------------------------------------------------------------------------------ DS-TUC-A 1 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KXD DS-TUC-A 2 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KD DS-TUC-A 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 2075.0 S G DS-TUC-A 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 2485.0 S G DS-TUC-A 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 2485.0 S G 17305( 7) - 15-Dec-2023 18:46:37 - [ 11] Visit: Z3 Visit Requirements: SCHED 100%; AFTER Z2 BY 12 H TO 60 H 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 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 1 1.0 S (1 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 NUM-POS=5, STEP-SIZE=0.9, 1 1.0 S (1 KD CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2500 S G see below (2075 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=4 1 2230 S G see below (2485 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2310 S G see below (2485 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 | ------------------------------------------------------------------------------------------------------------------------------------ DS-TUC-A 1 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KXD DS-TUC-A 2 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KD DS-TUC-A 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 2075.0 S G DS-TUC-A 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 2485.0 S G DS-TUC-A 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 2485.0 S G 17305( 7) - 15-Dec-2023 18:46:37 - [ 12] Visit: Z4 Visit Requirements: SCHED 100%; AFTER Z3 BY 12 H TO 60 H 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 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 1 1.0 S (1 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 DS-TUC-A COS/NUV ACQ/PEA PSA G230L 3000 NUM-POS=5, STEP-SIZE=0.9, 1 1.0 S (1 KD CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 1955 S G see below (2075 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=4 1 2320 S G see below (2485 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 DS-TUC-A COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=800, FP-POS=3 1 2310 S G see below (2485 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 | ------------------------------------------------------------------------------------------------------------------------------------ DS-TUC-A 1 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KXD DS-TUC-A 2 COS/NUV ACQ/PEA PSA G230L 3000 none none none none 1 N/A KD DS-TUC-A 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 2075.0 S G DS-TUC-A 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 2485.0 S G DS-TUC-A 5 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 2485.0 S G 17305( 7) - 15-Dec-2023 18:46:37 - [ 13] Summary Form for Proposal 17305 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/PEAKD, ACQ/PEAKXD, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=800, CENTER=FLUX-WT-FLR, FP-POS=3, FP-POS=4, NUM-POS=5, STEP-SIZE=0.9 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01 BY 12 H TO 60 H, AFTER 02 BY 12 H TO 60 H, AFTER 03 BY 12 H TO 60 H, AFTER Z1 BY 12 H TO 60 H, AFTER Z2 BY 12 H TO 60 H, AFTER Z3 BY 12 H TO 60 H, BETWEEN 14-NOV-2023:19:00:00 AND 17-NOV-2023:00:00:00, SCHED 100% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G130M, G230L ------------------------------------------------------------------------------------------------------------------------------------ Target Names DS-TUC-A ------------------------------------------------------------------------------------------------------------------------------------