13875( 2) - 23-Jul-2014 13:34:04 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 13875 Version: 2 Check-in Time: 23-Jul-2014 13:34:04 STScI Edit Number: 0 Title A Potential Paradigm Shift in our Understanding of Helium Reionization ------------------------------------------------------------------------------------ Type Cycle GO 22 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Gabor Worseck Max-Planck-Institut fur Astronomie, Y Heidelberg CoI: Prof. Joseph Hennawi Max-Planck-Institut fur Astronomie, N Heidelberg CoI: Dr. Jason X. Prochaska University of California - Santa Cruz N CoI: Prof. Matthew McQuinn University of Washington N CoI: Dr. Sebastiano Cantalupo University of California - Santa Cruz N CoI: Ilya Khrykin Max-Planck-Institut fur Astronomie, N Heidelberg CoI: Tobias Schmidt Max-Planck-Institut fur Astronomie, N Heidelberg ------------------------------------------------------------------------------------ Abstract The advent of GALEX and COS have revolutionized studies of HeII reionization. Observations of the FUV-brightest QSOs have resulted in a order-of-magnitude increase in science-grade HeII Lya absorption spectra in the HST archive. The clear picture emerging is that COS has successfully pinpointed the end of HeII reionization at z~2.7. Based on this, and our team's state-of-the-art radiative transfer simulations, one expects complete Gunn-Peterson absorption at higher redshifts. However, surprisingly, our analysis of the three existing sightlines at z>3.5 reveals high-transmission regions consistent with expectations for a reionized IGM, in striking conflict with the models. Explaining these measurements may require invoking other exotic sources of hard photons at high-z, which would amount to a paradigm shift in our understanding of HeII reionization, with concomitant implications for HI reionization. The unequivocal path forward is COS spectra of more QSOs at z>3.5, deep into the reionization era, to put this tentative result on firm statistical footing. We request 24 orbits to obtain science-grade COS far-UV spectra of the 3 brightest HeII QSOs at z>3.5, which will double the HeII pathlength at high-z and test tantalizing indications that HeII reionization began at z>4 and lasted over 1 Gyr. These spectra are complemented by ancillary data from 8m telescopes, including echelle spectra of the coeval HI Lya forest, and our dedicated survey for QSOs in the foreground of each HeII sightline. Our targets are the only viable sources probing z>3.5 in a reasonable orbit request, and it is critical to HST's legacy to solve this riddle before the mission ends. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will obtain COS FUV G140L spectra of 3 z~3.8 quasars to characterize intergalactic HeII Lyman alpha absorption along their sightlines. Two targets have been confirmed as HeII-transparent in previous cycles, but lack science-grade HST/COS follow-up spectroscopy. Our third target is the 2nd 13875( 2) - 23-Jul-2014 13:34:04 - [ 2] UV-brightest quasar at z>3.5, discovered by our team in a dedicated survey. Our targets have accurate magnitudes covering the quasar continuum just redward of the HeII break (GALEX FUV, HST/ACS F150LP), and sufficiently accurate GALEX NUV magnitudes for reliable acquisition via ACQ/IMAGE. All targets are safe to observe with COS and have precise coordinates from SDSS or Pan-STARRS. Our targets are quite faint in the NUV, resulting in long NUV acquisition exposure times of 150-900sec. For the faintest target (SDSSJ1137+6237, NUV=24.0) we limit the acquisition exposure time to 900sec yielding S/N=30 instead of the recommended S/N=40, in order to limit the impact of dark current on the target centering. In accordance with our Phase I proposal we request CVZ observations for SDSSJ1137+6237. The G140L grating provides the wavelength coverage to define the quasar continuum and the necessary resolution to measure the onset of patchy HeII absorption. We require a S/N~3 per resolution element at 1500A, which results in a total request of 24 orbits for our three targets. Continuous wavelength coverage at good sensitivity (lambda>1150A) is required to maximize the coverage of the HeII Lyman alpha absorption, only provided by the G140L 1105A setup. We will use all FP-POS offsets in consecutive orbits of a visit. Spectra will be recorded in TIME-TAG mode with concurrent wavelength calibration (TAGFLASH). Time intervals spent in the Earth's shadow will be used to correct for geocoronal OI and NI emission. Given our faint sources, airglow will dominate the COS count rates. However, even at the high airglow conditions conservatively assumed in our ETC calculations, buffer times are longer than the exposure times, except for the CVZ target. All exposure times have been adjusted to use the full visibility period in each orbit. For the CVZ target the buffer time has been adjusted to maximize the exposure time according to Section 5.4.2 of the COS Instrument Handbook. Due to the time-dependent sensitivity of COS and COS detector gain sag, we request that visits of the same target (SDSSJ1137+6237: Visit 1 and 2; SDSSJ1614+4859: Visit 3 and 4) are scheduled within 60 days of another. The time gap should be minimized, depending on the observing schedule. Coaddition of data taken in the Poisson limit of COS over several visits requires the sensitivity and detector characteristics to be at least approximately equal. This also requires that all observations of a given target are performed at the same lifetime position of COS. Gain sag limits the accuracy of the COS background subtraction, which is critical to reach our science goals. Therefore, we strongly prefer all observations to be performed at COS lifetime position 3, and preferably as soon as possible after the move, in order to minimize gain sag. ------------------------------------------------------------------------------------ 13875( 2) - 23-Jul-2014 13:34:04 - [ 3] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 SDSSJ1137+62 GALAXY, LYMAN ALPHA RA=11H37M21.7200S +/- 0.1", J2000 Z = 3.77 V = 19.27 +/- 0.10 ACS 37 CLOUD, QSO DEC=+62D37'7.28" +/- 0.1" F150LP=22.83+-0.10, GALEX NUV=24.10+-0.34 Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ1614+48 GALAXY, LYMAN ALPHA RA=16H14M26.8100S +/- 0.1", J2000 Z = 3.82 V = 19.56 +/- 0.10 ACS 59 CLOUD, QSO DEC=+48D59'58.81" +/- 0.1" F150LP=21.83+-0.10, GALEX NUV=22.55+-0.39 Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 3 QSO-231145-1 GALAXY, LYMAN ALPHA RA=23H11M45.4600S +/- 0.1", J2000 Z = 3.70 V = 18.09 +/- 0.10 GALEX 41752 CLOUD, QSO DEC=-14D17'52.10" +/- 0.1" FUV=21.60+-0.34, NUV=21.55+-0.29 Reference Frame: ICRS ------------------------------------------------------------------------------------------------------------------------------------ 13875( 2) - 23-Jul-2014 13:34:04 - [ 4] Visit: 01 Visit Requirements: CVZ; SEQ 01, 02 WITHIN 60 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 SDSSJ1137+6 COS/NUV ACQ/IMA PSA MIRRORA 1 900 S (900 SEQ 1-5 NON-INT 237 GE S) Comments: The target is faint in the NUV, but has reasonably accurate photometry available. The spectral energy distribution likely rises steeply towards the FUV, but the more accurate flux from HST/ACS F150LP might indicate that the target is somewhat brighter in the NUV than the GALEX measurement. An acquisition exposure of 900sec calibrated to NUV=24.0 yields S/N=30 (see ETC result), enough to center the source in the COS PSA. For the recommended S/N=40, one would need 1600sec (COS.ta.616389), which is doable for a CVZ target, but might cause problems in the target centering due to dark current. ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ1137+6 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=3132, EXTENDED=NO, 1 6374 S 237 G FLASH=YES, FP-POS=1, SEGMENT=A (6374 S) Comments: The ETC run uses high airglow conditions for a conservative estimate of the buffer time, given the long exposure time and the generally high background conditions in the CVZ. The buffer time has been adjusted to maximize the exposure time according to Section 5.4.2 of the COS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ1137+6 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=3132, EXTENDED=NO, 1 6374 S 237 G FLASH=YES, FP-POS=2, SEGMENT=A (6374 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ1137+6 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=3132, EXTENDED=NO, 1 6374 S 237 G FLASH=YES, FP-POS=3, SEGMENT=A (6374 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SDSSJ1137+6 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=3132, EXTENDED=NO, 1 6374 S 237 G FLASH=YES, FP-POS=4, SEGMENT=A (6374 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 | ------------------------------------------------------------------------------------------------------------------------------------ 13875( 2) - 23-Jul-2014 13:34:04 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ1137+6237 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE SDSSJ1137+6237 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A G SDSSJ1137+6237 3 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A G SDSSJ1137+6237 4 COS/FUV TIME-TA PSA G140L 1105 none none none none 3 N/A G SDSSJ1137+6237 5 COS/FUV TIME-TA PSA G140L 1105 none none none none 4 N/A G 13875( 2) - 23-Jul-2014 13:34:04 - [ 6] Visit: 02 Visit Requirements: CVZ; SEQ 01, 02 WITHIN 60 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 SDSSJ1137+6 COS/NUV ACQ/IMA PSA MIRRORA 1 900 S (900 SEQ 1-5 NON-INT 237 GE S) Comments: The target is faint in the NUV, but has reasonably accurate photometry available. The spectral energy distribution likely rises steeply towards the FUV, but the more accurate flux from HST/ACS F150LP might indicate that the target is somewhat brighter in the NUV than the GALEX measurement. An acquisition exposure of 900sec calibrated to NUV=24.0 yields S/N=30 (see ETC result), enough to center the source in the COS PSA. For the recommended S/N=40, one would need 1600sec (COS.ta.616389), which is doable for a CVZ target, but might cause problems in the target centering due to dark current. ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ1137+6 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=3132, EXTENDED=NO, 1 6374 S 237 G FLASH=YES, FP-POS=1, SEGMENT=A (6374 S) Comments: The ETC run uses high airglow conditions for a conservative estimate of the buffer time, given the long exposure time and the generally high background conditions in the CVZ. The buffer time has been adjusted to maximize the exposure time according to Section 5.4.2 of the COS Instrument Handbook. ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ1137+6 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=3132, EXTENDED=NO, 1 6374 S 237 G FLASH=YES, FP-POS=2, SEGMENT=A (6374 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ1137+6 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=3132, EXTENDED=NO, 1 6374 S 237 G FLASH=YES, FP-POS=3, SEGMENT=A (6374 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SDSSJ1137+6 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=3132, EXTENDED=NO, 1 6374 S 237 G FLASH=YES, FP-POS=4, SEGMENT=A (6374 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 | ------------------------------------------------------------------------------------------------------------------------------------ 13875( 2) - 23-Jul-2014 13:34:04 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ1137+6237 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE SDSSJ1137+6237 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 N/A G SDSSJ1137+6237 3 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 N/A G SDSSJ1137+6237 4 COS/FUV TIME-TA PSA G140L 1105 none none none none 3 N/A G SDSSJ1137+6237 5 COS/FUV TIME-TA PSA G140L 1105 none none none none 4 N/A G 13875( 2) - 23-Jul-2014 13:34:04 - [ 8] Visit: 03 Visit Requirements: SEQ 03, 04 WITHIN 60 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 SDSSJ1614+4 COS/NUV ACQ/IMA PSA MIRRORA 1 400 S (400 859 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ1614+4 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 1800 S 859 G FLASH=YES, FP-POS=1, SEGMENT=A see below (1896 S) Comments: The ETC run conservatively assumes high background conditions, but given the faint target, the buffer time is still considerably longer than the exposure time. ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ1614+4 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 3000 S 859 G FLASH=YES, FP-POS=2, SEGMENT=A see below (3072 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ1614+4 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 3000 S 859 G FLASH=YES, FP-POS=3, SEGMENT=A see below (3072 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SDSSJ1614+4 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 3000 S 859 G FLASH=YES, FP-POS=3, SEGMENT=A see below (3072 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 SDSSJ1614+4 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 3000 S 859 G FLASH=YES, FP-POS=4, SEGMENT=A see below (3072 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ1614+4859 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE SDSSJ1614+4859 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 1896.0 S G SDSSJ1614+4859 3 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 3072.0 S G SDSSJ1614+4859 4 COS/FUV TIME-TA PSA G140L 1105 none none none none 3 3072.0 S G 13875( 2) - 23-Jul-2014 13:34:04 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ1614+4859 5 COS/FUV TIME-TA PSA G140L 1105 none none none none 4 3072.0 S G SDSSJ1614+4859 6 COS/FUV TIME-TA PSA G140L 1105 none none none none 5 3072.0 S G 13875( 2) - 23-Jul-2014 13:34:04 - [ 10] Visit: 04 Visit Requirements: SEQ 03, 04 WITHIN 60 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 SDSSJ1614+4 COS/NUV ACQ/IMA PSA MIRRORA 1 400 S (400 859 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 SDSSJ1614+4 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 1800 S 859 G FLASH=YES, FP-POS=1, SEGMENT=A see below (1896 S) Comments: The ETC run conservatively assumes high background conditions, but given the faint target, the buffer time is still considerably longer than the exposure time. ------------------------------------------------------------------------------------------------------------------------------------ 3 SDSSJ1614+4 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 3000 S 859 G FLASH=YES, FP-POS=2, SEGMENT=A see below (3072 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 SDSSJ1614+4 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 3000 S 859 G FLASH=YES, FP-POS=3, SEGMENT=A see below (3072 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 SDSSJ1614+4 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 3000 S 859 G FLASH=YES, FP-POS=3, SEGMENT=A see below (3072 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 SDSSJ1614+4 COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 3000 S 859 G FLASH=YES, FP-POS=4, SEGMENT=A see below (3072 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ1614+4859 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE SDSSJ1614+4859 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 1896.0 S G SDSSJ1614+4859 3 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 3072.0 S G SDSSJ1614+4859 4 COS/FUV TIME-TA PSA G140L 1105 none none none none 3 3072.0 S G 13875( 2) - 23-Jul-2014 13:34:04 - [ 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 | ------------------------------------------------------------------------------------------------------------------------------------ SDSSJ1614+4859 5 COS/FUV TIME-TA PSA G140L 1105 none none none none 4 3072.0 S G SDSSJ1614+4859 6 COS/FUV TIME-TA PSA G140L 1105 none none none none 5 3072.0 S G 13875( 2) - 23-Jul-2014 13:34:04 - [ 12] 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 QSO-231145- COS/NUV ACQ/IMA PSA MIRRORA 1 150 S (150 141752 GE S) ------------------------------------------------------------------------------------------------------------------------------------ 2 QSO-231145- COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 3000 S 141752 G FLASH=YES, FP-POS=1, SEGMENT=A see below (2264 S) Comments: The ETC run conservatively assumes high background conditions, but given the faint target, the buffer time is still considerably longer than the exposure time. ------------------------------------------------------------------------------------------------------------------------------------ 3 QSO-231145- COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 3000 S 141752 G FLASH=YES, FP-POS=2, SEGMENT=A see below (2940 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 QSO-231145- COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 3000 S 141752 G FLASH=YES, FP-POS=3, SEGMENT=A see below (2940 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 QSO-231145- COS/FUV TIME-TA PSA G140L 1105 BUFFER-TIME=4300, EXTENDED=NO, 1 3000 S 141752 G FLASH=YES, FP-POS=4, SEGMENT=A see below (2940 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 | ------------------------------------------------------------------------------------------------------------------------------------ QSO-231145-141752 1 COS/NUV ACQ/IMA PSA MIRRORA none none none none 1 N/A GE QSO-231145-141752 2 COS/FUV TIME-TA PSA G140L 1105 none none none none 1 2264.0 S G QSO-231145-141752 3 COS/FUV TIME-TA PSA G140L 1105 none none none none 2 2940.0 S G QSO-231145-141752 4 COS/FUV TIME-TA PSA G140L 1105 none none none none 3 2940.0 S G QSO-231145-141752 5 COS/FUV TIME-TA PSA G140L 1105 none none none none 4 2940.0 S G 13875( 2) - 23-Jul-2014 13:34:04 - [ 13] Summary Form for Proposal 13875 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV, COS/NUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/IMAGE, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=3132, BUFFER-TIME=4300, EXTENDED=NO, FLASH=YES, FP-POS=1, FP-POS=2, FP-POS=3, FP-POS=4, SEGMENT=A ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements CVZ, SEQ 01, 02 WITHIN 60 D, SEQ 03, 04 WITHIN 60 D, SEQ 1-5 NON-INT ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G140L, MIRRORA ------------------------------------------------------------------------------------------------------------------------------------ Target Names QSO-231145-141752, SDSSJ1137+6237, SDSSJ1614+4859 ------------------------------------------------------------------------------------------------------------------------------------