17845( 4) - 04-Dec-2024 17:04:26 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17845 Version: 4 Check-in Time: 04-Dec-2024 17:04:26 STScI Edit Number: 0 Title Betelgeuse: The Great Dimming Redux? ------------------------------------------------------------------------------------ Type Cycle GO 32 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Andrea Dupree Smithsonian Institution Astrophysical Y Observatory CoI: Thomas Calderwood American Association Of Variable Star N Observers CoI: Dr. Caroline Huang Smithsonian Institution Astrophysical N Observatory CoI: Dr. Thomas Granzer Leibniz-Institut für Astrophysik Potsdam N (AIP) CoI: Dr. Kateryna Kravchenko Max Planck Institute for Extraterrestrial N Physics CoI: Dr. Lynn D Matthews Massachusetts Institute of Technology N CoI: Dr. Miguel Montarges Observatoire de Paris - Section de Meudon N CoI: Prof. Klaus G Strassmeier Leibniz-Institut für Astrophysik Potsdam N (AIP) CoI: Michael Weber Leibniz-Institut für Astrophysik Potsdam N (AIP) CoI: Prof. Pierre Kervella Observatoire de Paris N CoI: Dr. Morgan MacLeod Smithsonian Institution Astrophysical N Observatory CoI: Dr. alain jorissen Universite Libre de Bruxelles N ------------------------------------------------------------------------------------ Abstract The historic Great Dimming of the red supergiant Betelgeuse in 2020 was initiated at a propitious confluence of maximum outflow of the 400-day fundamental mode of pulsation and the 2200-day Long Secondary Period. This condition will occur again sometime between Fall 2024 and Spring 2025. We propose to follow its behavior. Spatially resolved ultraviolet spectra of the star achievable with STIS can provide the connecting link between the convective activity on the stellar surface and the formation of a dust cloud in the outer atmosphere. This campaign will probe the entire atmosphere, from the photosphere to the circumstellar environment, with a combination of ground-based interferometric/AO imaging, radio observations, and optical and UV spectroscopy, creating a comprehensive contemporaneous sampling of the star, its variation with time, and the effects on its extended atmosphere. We should learn whether the event of 2019-2020 was a 'random' 17845( 4) - 04-Dec-2024 17:04:26 - [ 2] occurrence or results from oscillation phase superposition. Two visits are requested during Cycle 31, and 5 visits during Cycle 32 (16 orbits) to obtain spatially resolved ultraviolet spectra at this unique time. ------------------------------------------------------------------------------------ Observations Description ------------------------ We propose to obtain short slit echelle spectra of Betelgeuse with the medium resolution E230M grating in the wavelength range of 2303 to 3111\AA. We will use the small (0.1" x 0.025") slit for maximum spatial resolution. Only with this supported slit can we take full advantage of the STIS/HST resolution. Betelgeuse has no record of flaring and previous STIS observations demonstrate that the STIS detectors are not subject to any danger. We plan 1 orbit in the first visit with the E230H grating to investigate the behavior of blended line features. For 5 visits: 1 visit (4 orbits), 4 visits (3 orbits) TOTAL 16 orbits These visits will take advantage of the small aperture (0.1X0.3 arsec) to obtain spatially resolved ultraviolet spectra of the supergiant Betelgeuse. Chromospheric emission lines reveal dynamics, densities, and emission measures of the chromospheric plasma. We plan to cover the optical diameter of the star (42 mas) with a center pointing, and offsets at +/-25 mas. Then followed by pointing off the optical disk and offset to +/- 50 mas, and +/-75 mas. (Not in this order, but designed to appropriately fill the time available.: sequence of o) We have used the ETC for STIS, assuming a Castelli/Kurucz model of a M2 supergiant, and normalizing it to the observed STIS flux (from MAST) near 2786A (to avoid Mg II emission) for various pointing offsets on the star at different dates. We used spectra from the 'normal' state of Betelgeuse (not the spectra taken during 2019 Sep-Nov). Ideally a range of exposure times would be used in response to the varying stellar flux. However, we cannot predict the ultraviolet flux level a priori, as it is not related to the optical V-magnitude. We therefore have selected an average value. This is a pattern we have used since 2019 and it works. The center exposure requires 7.9 minutes; the offset at +/-25 mas and +/-50 mas require 9-10 minutes, and at +/-75 mas, 20-30 minutes. At the declination of Betelgeuse, each HST orbit allows 49-52 minutes on target. These spectra will require guide star acquisition, target acquisition, and two peak ups with the small slit (0.1" x 0.025") during the first orbit of a visit. This takes 31.7 minutes; then we offset to -75 mas for a 1155 dec exposure. Orbit 2 is followed by offset to -50 mas as for a 606 sec exposure, offset to -25 mas for 530 sec exposure, offset to 0 (center) for a 472 sec exposure, , and to +25 masfor a 569 sec exposure. In the 3rd orbit, we offset to +50 mas for a 606 sec exposure, followed by an offset to +75 mas for a 1944 sec exposure. In the first visit, we are including another orbit which will extend to +/-100 mas where there may be indications of the presence of a companion star. The following 4 visits will only require 3 orbits. Total of 16 orbits. ------------------------------------------------------------------------------------ 17845( 4) - 04-Dec-2024 17:04:26 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 -ALF-ORI STAR, M III-I, RA=05H55M10.3054S, J2000 V = +0.42 +/- 0.2 SUPERGIANT O DEC=+07D24'25.43" Reference Frame: ICRS Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2000 0.0018514498381218894 0.011300000000000001 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 17845( 4) - 04-Dec-2024 17:04:26 - [ 4] Visit: 01 Visit Requirements: AFTER 30-NOV-2024:00:00:00 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 -ALF-ORI STIS/CCD ACQ F25ND5 MIRROR 1 1 S (1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 -ALF-ORI STIS/CCD ACQ/PEA 0.2X0.09 G230LB 2375 1 1.1 S (1.1 K S) Comments: 3 ptl inear peak up ------------------------------------------------------------------------------------------------------------------------------------ 3 -ALF-ORI STIS/CCD ACQ/PEA 0.1X0.03 G230LB 2375 1 1.9 S (1.9 K S) Comments: Spiral in 0.1X0.03 aperture ------------------------------------------------------------------------------------------------------------------------------------ 4 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 1115 S POS TARG -0.075, null -MAMA (1115 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 606 S (606 POS TARG -0.050, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 6 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 530 S (530 POS TARG -0.025, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 7 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 472 S (472 -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 8 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 589 S (589 POS TARG +0.025, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 9 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 606 S (606 POS TARG +0.050, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 10 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 1944 S POS TARG +0.075, null -MAMA (1944 S) ------------------------------------------------------------------------------------------------------------------------------------ 11 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 1225 S POS TARG +0.100, null -MAMA (1225 S) ------------------------------------------------------------------------------------------------------------------------------------ 12 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 1305 S POS TARG -0.100, null -MAMA (1305 S) ------------------------------------------------------------------------------------------------------------------------------------ 17845( 4) - 04-Dec-2024 17:04:26 - [ 5] Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ 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 | ------------------------------------------------------------------------------------------------------------------------------------ -ALF-ORI 1 STIS/CCD ACQ F25ND5 MIRROR none none none none 1 N/A -ALF-ORI 2 STIS/CCD ACQ/PEA 0.2X0.09 G230LB 2375 none none none none 1 N/A K -ALF-ORI 3 STIS/CCD ACQ/PEA 0.1X0.03 G230LB 2375 none none none none 1 N/A K -ALF-ORI 4 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 1 N/A -MAMA -ALF-ORI 5 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 6 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 7 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 8 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 9 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 3 N/A -MAMA -ALF-ORI 10 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 3 N/A -MAMA -ALF-ORI 11 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 4 N/A -MAMA -ALF-ORI 12 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 4 N/A -MAMA 17845( 4) - 04-Dec-2024 17:04:26 - [ 6] Visit: 02 Visit Requirements: AFTER 01 BY 25 D TO 45 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 -ALF-ORI STIS/CCD ACQ F25ND5 MIRROR 1 1 S (1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 -ALF-ORI STIS/CCD ACQ/PEA 0.2X0.09 G230LB 2375 1 1 S (1 S) K ------------------------------------------------------------------------------------------------------------------------------------ 3 -ALF-ORI STIS/CCD ACQ/PEA 0.1X0.03 G230LB 2375 1 1 S (1 S) K ------------------------------------------------------------------------------------------------------------------------------------ 4 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 1155 S POS TARG -0.075, null -MAMA (1155 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 606 S (606 POS TARG -0.050, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 6 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 530 S (530 POS TARG -0.025, null -MAMA S) Comments: 3 pt linear peakup; telescope returned to central dwell position. ------------------------------------------------------------------------------------------------------------------------------------ 7 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 472 S (472 -MAMA S) Comments: Spiral in 0.1X0.03 aperture. ------------------------------------------------------------------------------------------------------------------------------------ 8 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 569 S (569 POS TARG +0.025, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 9 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 606 S (606 POS TARG +0.050, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 10 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 1944 S POS TARG +0.075, null -MAMA (1944 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 | ------------------------------------------------------------------------------------------------------------------------------------ -ALF-ORI 1 STIS/CCD ACQ F25ND5 MIRROR none none none none 1 N/A -ALF-ORI 2 STIS/CCD ACQ/PEA 0.2X0.09 G230LB 2375 none none none none 1 N/A K 17845( 4) - 04-Dec-2024 17:04:26 - [ 7] 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 | ------------------------------------------------------------------------------------------------------------------------------------ -ALF-ORI 3 STIS/CCD ACQ/PEA 0.1X0.03 G230LB 2375 none none none none 1 N/A K -ALF-ORI 4 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 1 N/A -MAMA -ALF-ORI 5 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 6 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 7 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 8 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 9 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 3 N/A -MAMA -ALF-ORI 10 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 3 N/A -MAMA 17845( 4) - 04-Dec-2024 17:04:26 - [ 8] Visit: 03 Visit Requirements: AFTER 02 BY 25 D TO 45 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 -ALF-ORI STIS/CCD ACQ F25ND5 MIRROR 1 1 S (1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 -ALF-ORI STIS/CCD ACQ/PEA 0.2X0.09 G230LB 2375 1 1 S (1 S) K ------------------------------------------------------------------------------------------------------------------------------------ 3 -ALF-ORI STIS/CCD ACQ/PEA 0.1X0.03 G230LB 2375 1 1 S (1 S) K ------------------------------------------------------------------------------------------------------------------------------------ 4 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 1155 S POS TARG -0.075, null -MAMA (1155 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 606 S (606 POS TARG -0.050, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 6 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 530 S (530 POS TARG -0.025, null -MAMA S) Comments: 3 pt linear peakup; telescope returned to central dwell position. ------------------------------------------------------------------------------------------------------------------------------------ 7 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 472 S (472 -MAMA S) Comments: Spiral in 0.1X0.03 aperture. ------------------------------------------------------------------------------------------------------------------------------------ 8 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 569 S (569 POS TARG +0.025, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 9 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 606 S (606 POS TARG +0.050, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 10 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 1944 S POS TARG +0.075, null -MAMA (1944 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 | ------------------------------------------------------------------------------------------------------------------------------------ -ALF-ORI 1 STIS/CCD ACQ F25ND5 MIRROR none none none none 1 N/A -ALF-ORI 2 STIS/CCD ACQ/PEA 0.2X0.09 G230LB 2375 none none none none 1 N/A K 17845( 4) - 04-Dec-2024 17:04:26 - [ 9] 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 | ------------------------------------------------------------------------------------------------------------------------------------ -ALF-ORI 3 STIS/CCD ACQ/PEA 0.1X0.03 G230LB 2375 none none none none 1 N/A K -ALF-ORI 4 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 1 N/A -MAMA -ALF-ORI 5 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 6 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 7 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 8 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 9 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 3 N/A -MAMA -ALF-ORI 10 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 3 N/A -MAMA 17845( 4) - 04-Dec-2024 17:04:26 - [ 10] Visit: 04 Visit Requirements: AFTER 20-MAR-2024:00:00:00; AFTER 03 BY 25 D TO 45 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 -ALF-ORI STIS/CCD ACQ F25ND5 MIRROR 1 1 S (1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 -ALF-ORI STIS/CCD ACQ/PEA 0.2X0.09 G230LB 2375 1 1 S (1 S) K ------------------------------------------------------------------------------------------------------------------------------------ 3 -ALF-ORI STIS/CCD ACQ/PEA 0.1X0.03 G230LB 2375 1 1 S (1 S) K ------------------------------------------------------------------------------------------------------------------------------------ 4 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 1155 S POS TARG -0.075, null -MAMA (1155 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 606 S (606 POS TARG -0.050, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 6 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 530 S (530 POS TARG -0.025, null -MAMA S) Comments: 3 pt linear peakup; telescope returned to central dwell position. ------------------------------------------------------------------------------------------------------------------------------------ 7 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 472 S (472 -MAMA S) Comments: Spiral in 0.1X0.03 aperture. ------------------------------------------------------------------------------------------------------------------------------------ 8 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 569 S (569 POS TARG +0.025, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 9 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 606 S (606 POS TARG +0.050, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 10 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 1944 S POS TARG +0.075, null -MAMA (1944 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 | ------------------------------------------------------------------------------------------------------------------------------------ -ALF-ORI 1 STIS/CCD ACQ F25ND5 MIRROR none none none none 1 N/A -ALF-ORI 2 STIS/CCD ACQ/PEA 0.2X0.09 G230LB 2375 none none none none 1 N/A K 17845( 4) - 04-Dec-2024 17:04:26 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ -ALF-ORI 3 STIS/CCD ACQ/PEA 0.1X0.03 G230LB 2375 none none none none 1 N/A K -ALF-ORI 4 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 1 N/A -MAMA -ALF-ORI 5 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 6 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 7 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 8 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 9 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 3 N/A -MAMA -ALF-ORI 10 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 3 N/A -MAMA 17845( 4) - 04-Dec-2024 17:04:26 - [ 12] Visit: 05 Visit Requirements: AFTER 20-MAR-2024:00:00:00; AFTER 04 BY 25 D TO 45 D On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 -ALF-ORI STIS/CCD ACQ F25ND5 MIRROR 1 1 S (1 S) ------------------------------------------------------------------------------------------------------------------------------------ 2 -ALF-ORI STIS/CCD ACQ/PEA 0.2X0.09 G230LB 2375 1 1 S (1 S) K ------------------------------------------------------------------------------------------------------------------------------------ 3 -ALF-ORI STIS/CCD ACQ/PEA 0.1X0.03 G230LB 2375 1 1 S (1 S) K ------------------------------------------------------------------------------------------------------------------------------------ 4 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 1155 S POS TARG -0.075, null -MAMA (1155 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 606 S (606 POS TARG -0.050, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 6 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 530 S (530 POS TARG -0.025, null -MAMA S) Comments: 3 pt linear peakup; telescope returned to central dwell position. ------------------------------------------------------------------------------------------------------------------------------------ 7 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 472 S (472 -MAMA S) Comments: Spiral in 0.1X0.03 aperture. ------------------------------------------------------------------------------------------------------------------------------------ 8 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 569 S (569 POS TARG +0.025, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 9 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 606 S (606 POS TARG +0.050, null -MAMA S) ------------------------------------------------------------------------------------------------------------------------------------ 10 -ALF-ORI STIS/NUV ACCUM 0.1X0.03 E230M 2707 1 1944 S POS TARG +0.075, null -MAMA (1944 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 | ------------------------------------------------------------------------------------------------------------------------------------ -ALF-ORI 1 STIS/CCD ACQ F25ND5 MIRROR none none none none 1 N/A -ALF-ORI 2 STIS/CCD ACQ/PEA 0.2X0.09 G230LB 2375 none none none none 1 N/A K 17845( 4) - 04-Dec-2024 17:04:26 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ -ALF-ORI 3 STIS/CCD ACQ/PEA 0.1X0.03 G230LB 2375 none none none none 1 N/A K -ALF-ORI 4 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 1 N/A -MAMA -ALF-ORI 5 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 6 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 7 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 8 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 2 N/A -MAMA -ALF-ORI 9 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 3 N/A -MAMA -ALF-ORI 10 STIS/NUV ACCUM 0.1X0.03 E230M 2707 none none none none 3 N/A -MAMA 17845( 4) - 04-Dec-2024 17:04:26 - [ 14] Summary Form for Proposal 17845 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures 0.1X0.03, 0.2X0.09, F25ND5 ------------------------------------------------------------------------------------------------------------------------------------ Configurations STIS/CCD, STIS/NUV-MAMA ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACCUM, ACQ, ACQ/PEAK ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements AFTER 01 BY 25 D TO 45 D, AFTER 02 BY 25 D TO 45 D, AFTER 03 BY 25 D TO 45 D, AFTER 04 BY 25 D TO 45 D, AFTER 20-MAR-2024:00:00:00, AFTER 30-NOV-2024:00:00:00, POS TARG +0.025, null, POS TARG +0.050, null, POS TARG +0.075, null, POS TARG +0.100, null, POS TARG -0.025, null, POS TARG -0.050, null, POS TARG -0.075, null, POS TARG -0.100, null ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements E230M, G230LB, MIRROR ------------------------------------------------------------------------------------------------------------------------------------ Target Names -ALF-ORI ------------------------------------------------------------------------------------------------------------------------------------