17716( 5) - 05-Nov-2024 22:34:29 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 17716 Version: 5 Check-in Time: 05-Nov-2024 22:34:29 STScI Edit Number: 1 Title Probing Multiphase Cooling Via OVI Emission in the Cores of the Most Extreme Cooling Flows ------------------------------------------------------------------------------------ Type Cycle GO 32 ------------------------------------------------------------------------------------ Investigators Contact? PI: Prof. Michael A. McDonald Massachusetts Institute of Technology Y CoI: Mr. Michael Anthony Reefe Massachusetts Institute of Technology N CoI: Prof. Andrew C. Fabian University of Cambridge N CoI: Prof. Massimo Gaspari University of Modena and Reggio Emilia N CoI: Dr. Brian R. McNamara University of Waterloo N CoI: Dr. Marios Chatzikos University of Kentucky N CoI: Dr. Taweewat Somboonpanyakul Chulalongkorn University N CoI: Michael S. Calzadilla Smithsonian Institution Astrophysical N Observatory ------------------------------------------------------------------------------------ Abstract The cores of galaxy clusters represent one of the few places in the Universe where large-scale cooling and feedback processes can be readily observed. Unlike isolated galaxies, where some of the energy injected into the ISM from the AGN often escapes into the low-density IGM, the denser ICM in cluster cores retains an imprint of this feedback in the form of bubbles or ripples. Similarly, the accretion of hot gas from the IGM onto isolated galaxies is challenging to observe due to the very low densities, while such phenomena have been studied in depth for decades in galaxy clusters. These so-called "cooling flows" in galaxy clusters, which were once thought to be massive flows of cool gas on the order of hundreds of Msun/yr, are now understood to be considerably less massive, with AGN feedback preventing the majority of the gas from cooling. Despite significant progress, the details of the cooling/feedback cycle still elude us. One of the most promising paths forward is the use of the OVI emission line, probing 10^5.5K gas, to detect the multi-phase cooling flow. This line should be especially sensitive to the instantaneous cooling rate of the hot gas, compared to lines in the X-ray. Here we propose to target the three most strongly cooling clusters in the known universe that do not also harbor central QSOs, with a goal of measuring the instantaneous cooling rate in these clusters. This program would double the number of OVI detections in non-QSO clusters, providing critical constraints for subgrid models of AGN feedback in simulations, providing a measurement of the level of turbulence in the cooling gas, and constraining the age of the cooling-fed starburst. ------------------------------------------------------------------------------------ Observations Description ------------------------ The primary goal of this program is to obtain spectra of the OVI (1032, 1038) doublet in three giant elliptical galaxies, which will be redshifted to 1291-1532A, depending on the source. Our secondary goal is to obtain broad UV continuum coverage. We are targeting relatively diffuse/clumpy regions. Thus, pointing revision via 17716( 5) - 05-Nov-2024 22:34:29 - [ 2] ACQ/SEARCH is not possible. We instead must center on a nearby star (<60" away) in all cases and perform offsets. According to the COS users manual, such offsets should be accurate enough for our purposes. We have identified stars that are bright in the bluest HST band that is available, and are using their GAIA positions as a starting point. All of our observations are done in TIME-TAG mode. This temporal sampling will allow us to exclude poor quality data and get improved thermal correction and background removal. We separate our visits into 4+ orbits, cycling through FP-POS with each new visit. This observing strategy is adopted to reduce the fixed pattern noise and fill up the wavelength hole produced by the chip gap without excessive overheads. Since our targets are faint (<0.001 cts/s), we use a BUFFER-TIME equal to the exposure time minus 110s, as suggested by Julia Duval for a similar 2012 program. We choose our central wavelengths in order to keep the OVI line (1032, 1038A rest frame) as far from the chip gap as possible. We are open to suggestions on this, if we are pushing the line into a low-sensitivity regime. ------------------------------------------------------------------------------------ 17716( 5) - 05-Nov-2024 22:34:29 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 ABELL1835-ST STAR, UNDESIGNATED RA=14H01M1.8753S +/- 0.2771e-3", J2000 V = 20 AR DEC=+02D52'1.15" +/- 0.2105e-3" Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2016 4.3267489385095975E-4 -0.006287 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 2 ABELL1835 CLUSTER OF GALAXIES, RA-OFF=0.000801D, J2000 V = 17 COOLING FLOW, STAR DEC-OFF=0.0114577D, FROM 1 FORMING REGION Reference Frame: ICRS Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 3 MACS1931-STA STAR, UNDESIGNATED RA=19H31M48.6492S +/- J2000 V = 19 R 0.3214e-3", DEC=-26D34'29.23" +/- 0.3248e-3" Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2016 1.1181289936652042E-6 -0.00311 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 4 MACS1931.8-2 CLUSTER OF GALAXIES, RA-OFF=0.0040805D, J2000 V = 18 634 COOLING FLOW, STAR DEC-OFF=-0.0008935D, FROM 3 FORMING REGION Reference Frame: ICRS Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 5 CHIPS1911-ST STAR, UNDESIGNATED RA=19H10M59.6126S +/- J2000 V = 20 AR 0.1663e-3", DEC=+44D55'28.54" +/- 0.1762e-3" Reference Frame: ICRS Extended: NO Epoch of Position RA proper motion (seconds of time/yr) DEC Proper Motion (arcsec/yr) Annual Parallax (arcsec) 2016 -2.884774832228855E-4 0.00135552 0.0 ------------------------------------------------------------------------------------------------------------------------------------ 6 CHIPS1911+44 CLUSTER OF GALAXIES, RA-OFF=0.0095614D, J2000 V = 19 55 COOLING FLOW, STAR DEC-OFF=-0.0020325D, FROM 5 FORMING REGION Reference Frame: ICRS Extended: YES ------------------------------------------------------------------------------------------------------------------------------------ 17716( 5) - 05-Nov-2024 22:34:29 - [ 4] Visit: 01 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 ABELL1835-S COS/NUV ACQ/IMA PSA MIRRORA 1 205 S (205 TAR GE S) Comments: Target star has g=19.45 AB mag, Teff=6132 ------------------------------------------------------------------------------------------------------------------------------------ 2 ABELL1835 COS/FUV TIME-TA PSA G130M 1222 BUFFER-TIME=1778, FLASH=YES, 1 1200 S G FP-POS=1, SEGMENT=BOTH see below (1888 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 ABELL1835 COS/FUV TIME-TA PSA G130M 1222 BUFFER-TIME=2451, FLASH=YES, 1 2000 S G FP-POS=2, SEGMENT=BOTH see below (2561 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 ABELL1835 COS/FUV TIME-TA PSA G130M 1222 BUFFER-TIME=2451, FLASH=YES, 1 2000 S G FP-POS=3, SEGMENT=BOTH see below (2561 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 ABELL1835 COS/FUV TIME-TA PSA G130M 1222 BUFFER-TIME=2451, FLASH=YES, 1 2000 S G FP-POS=4, SEGMENT=BOTH see below (2561 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 ABELL1835 COS/FUV TIME-TA PSA G130M 1222 BUFFER-TIME=2451, FLASH=YES, 1 2000 S G FP-POS=1, SEGMENT=BOTH see below (2561 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 | ------------------------------------------------------------------------------------------------------------------------------------ ABELL1835-STAR 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE ABELL1835 2 COS/FUV TIME-TA PSA G130M 1222 none none none none 1 1888.0 S G ABELL1835 3 COS/FUV TIME-TA PSA G130M 1222 none none none none 2 2561.0 S G ABELL1835 4 COS/FUV TIME-TA PSA G130M 1222 none none none none 3 2561.0 S G ABELL1835 5 COS/FUV TIME-TA PSA G130M 1222 none none none none 4 2561.0 S G ABELL1835 6 COS/FUV TIME-TA PSA G130M 1222 none none none none 5 2561.0 S G 17716( 5) - 05-Nov-2024 22:34:29 - [ 5] Visit: 02 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MACS1931-ST COS/NUV ACQ/IMA PSA MIRRORA 1 350 S (350 AR GE S) Comments: Target star has g=19.5 vega mags and T=5446 from TESS TIC ------------------------------------------------------------------------------------------------------------------------------------ 2 MACS1931.8- COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1529, FLASH=YES, 1 1200 S 2634 G FP-POS=1, SEGMENT=A see below (1639 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 MACS1931.8- COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=2478, FLASH=YES, 1 2000 S 2634 G FP-POS=2, SEGMENT=A see below (2588 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 MACS1931.8- COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=2478, FLASH=YES, 1 2000 S 2634 G FP-POS=3, SEGMENT=A see below (2588 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 | ------------------------------------------------------------------------------------------------------------------------------------ MACS1931-STAR 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE MACS1931.8-2634 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 1639.0 S G MACS1931.8-2634 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 2588.0 S G MACS1931.8-2634 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 2588.0 S G 17716( 5) - 05-Nov-2024 22:34:29 - [ 6] Visit: 03 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 MACS1931-ST COS/NUV ACQ/IMA PSA MIRRORA 1 350 S (350 AR GE S) Comments: Target star has g=19.5 vega mags and T=5446 from TESS TIC ------------------------------------------------------------------------------------------------------------------------------------ 2 MACS1931.8- COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=1529, FLASH=YES, 1 1200 S 2634 G FP-POS=3, SEGMENT=A see below (1639 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 MACS1931.8- COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=2478, FLASH=YES, 1 2000 S 2634 G FP-POS=4, SEGMENT=A see below (2588 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 MACS1931.8- COS/FUV TIME-TA PSA G130M 1291 BUFFER-TIME=2478, FLASH=YES, 1 2000 S 2634 G FP-POS=1, SEGMENT=A see below (2588 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 | ------------------------------------------------------------------------------------------------------------------------------------ MACS1931-STAR 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE MACS1931.8-2634 2 COS/FUV TIME-TA PSA G130M 1291 none none none none 1 1639.0 S G MACS1931.8-2634 3 COS/FUV TIME-TA PSA G130M 1291 none none none none 2 2588.0 S G MACS1931.8-2634 4 COS/FUV TIME-TA PSA G130M 1291 none none none none 3 2588.0 S G 17716( 5) - 05-Nov-2024 22:34:29 - [ 7] Visit: 04 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CHIPS1911-S COS/NUV ACQ/IMA PSA MIRRORA 1 150 S (150 TAR GE S) Comments: Target star has g=19.14 vega mags and Teff=6122, from TESS TIC ------------------------------------------------------------------------------------------------------------------------------------ 2 CHIPS1911+4 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=1786, FP-POS=4, 1 1500 S 455 G SEGMENT=BOTH see below (1896 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CHIPS1911+4 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=2499, FP-POS=1, 1 2000 S 455 G SEGMENT=BOTH see below (2609 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CHIPS1911+4 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=2499, FP-POS=2, 1 2000 S 455 G SEGMENT=BOTH see below (2609 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 CHIPS1911+4 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=2499, FP-POS=3, 1 2000 S 455 G SEGMENT=BOTH see below (2609 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 | ------------------------------------------------------------------------------------------------------------------------------------ CHIPS1911-STAR 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE CHIPS1911+4455 2 COS/FUV TIME-TA PSA G160M 1600 none none none none 1 1896.0 S G CHIPS1911+4455 3 COS/FUV TIME-TA PSA G160M 1600 none none none none 2 2609.0 S G CHIPS1911+4455 4 COS/FUV TIME-TA PSA G160M 1600 none none none none 3 2609.0 S G CHIPS1911+4455 5 COS/FUV TIME-TA PSA G160M 1600 none none none none 4 2609.0 S G 17716( 5) - 05-Nov-2024 22:34:29 - [ 8] Visit: 05 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CHIPS1911-S COS/NUV ACQ/IMA PSA MIRRORA 1 150 S (150 TAR GE S) Comments: Target star has g=19.14 vega mags and Teff=6122, from TESS TIC ------------------------------------------------------------------------------------------------------------------------------------ 2 CHIPS1911+4 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=1786, FP-POS=2, 1 1500 S 455 G SEGMENT=BOTH see below (1896 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CHIPS1911+4 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=2499, FP-POS=3, 1 2000 S 455 G SEGMENT=BOTH see below (2609 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CHIPS1911+4 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=2499, FP-POS=4, 1 2000 S 455 G SEGMENT=BOTH see below (2609 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 | ------------------------------------------------------------------------------------------------------------------------------------ CHIPS1911-STAR 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE CHIPS1911+4455 2 COS/FUV TIME-TA PSA G160M 1600 none none none none 1 1896.0 S G CHIPS1911+4455 3 COS/FUV TIME-TA PSA G160M 1600 none none none none 2 2609.0 S G CHIPS1911+4455 4 COS/FUV TIME-TA PSA G160M 1600 none none none none 3 2609.0 S G 17716( 5) - 05-Nov-2024 22:34:29 - [ 9] Visit: 06 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CHIPS1911-S COS/NUV ACQ/IMA PSA MIRRORA 1 150 S (150 TAR GE S) Comments: Target star has g=19.14 vega mags and Teff=6122, from TESS TIC ------------------------------------------------------------------------------------------------------------------------------------ 2 CHIPS1911+4 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=1786, FP-POS=3, 1 1500 S 455 G SEGMENT=BOTH see below (1896 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CHIPS1911+4 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=2459, FP-POS=4, 1 1500 S 455 G SEGMENT=BOTH see below (2609 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CHIPS1911+4 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=2499, FP-POS=1, 1 2000 S 455 G SEGMENT=BOTH see below (2609 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 | ------------------------------------------------------------------------------------------------------------------------------------ CHIPS1911-STAR 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE CHIPS1911+4455 2 COS/FUV TIME-TA PSA G160M 1600 none none none none 1 1896.0 S G CHIPS1911+4455 3 COS/FUV TIME-TA PSA G160M 1600 none none none none 2 2609.0 S G CHIPS1911+4455 4 COS/FUV TIME-TA PSA G160M 1600 none none none none 3 2609.0 S G 17716( 5) - 05-Nov-2024 22:34:29 - [ 10] Visit: 07 Visit Requirements: On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 CHIPS1911-S COS/NUV ACQ/IMA PSA MIRRORA 1 150 S (150 TAR GE S) Comments: Target star has g=19.14 vega mags and Teff=6122, from TESS TIC ------------------------------------------------------------------------------------------------------------------------------------ 2 CHIPS1911+4 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=1786, FP-POS=4, 1 1500 S 455 G SEGMENT=BOTH see below (1896 S) ------------------------------------------------------------------------------------------------------------------------------------ 3 CHIPS1911+4 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=2459, FP-POS=1, 1 1500 S 455 G SEGMENT=BOTH see below (2609 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 CHIPS1911+4 COS/FUV TIME-TA PSA G160M 1600 BUFFER-TIME=2499, FP-POS=2, 1 2000 S 455 G SEGMENT=BOTH see below (2609 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 | ------------------------------------------------------------------------------------------------------------------------------------ CHIPS1911-STAR 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE CHIPS1911+4455 2 COS/FUV TIME-TA PSA G160M 1600 none none none none 1 1896.0 S G CHIPS1911+4455 3 COS/FUV TIME-TA PSA G160M 1600 none none none none 2 2609.0 S G CHIPS1911+4455 4 COS/FUV TIME-TA PSA G160M 1600 none none none none 3 2609.0 S G 17716( 5) - 05-Nov-2024 22:34:29 - [ 11] Summary Form for Proposal 17716 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=1529, BUFFER-TIME=1778, BUFFER-TIME=1786, BUFFER-TIME=2451, BUFFER-TIME=2459, BUFFER-TIME=2478, BUFFER-TIME=2499, FLASH=YES, FP-POS=1, FP-POS=2, FP-POS=3, FP-POS=4, SEGMENT=A, SEGMENT=BOTH ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G130M, G160M, MIRRORA ------------------------------------------------------------------------------------------------------------------------------------ Target Names ABELL1835, ABELL1835-STAR, CHIPS1911+4455, CHIPS1911-STAR, MACS1931-STAR, MACS1931.8-2634 ------------------------------------------------------------------------------------------------------------------------------------