0 Assigned ID: 2852 ----- Attempting Submission 1 (Wed Mar 23 01:01:45 GMT 2022) ----- HST Phase I Proposal 2852 successfully submitted. Receipt: # 2852-1 ----- Attempting Submission 2 (Fri Mar 25 13:50:37 GMT 2022) ----- Copied failed Visit 06 into new Visit 56, HOPR 92590. 1899532358 ----- Attempting Submission 1 (Fri Jun 24 16:12:49 GMT 2022) ----- ----- Attempting Submission 2 (Wed Oct 26 00:51:02 GMT 2022) ----- ----- Attempting Submission 3 (Fri May 19 19:48:04 GMT 2023) ----- ----- Attempting Submission 4 (Thu Jul 27 15:16:30 GMT 2023) ----- target conf charts tool kept freezing APT Dissecting Early Universe Dust with Matched-Resolution Observations from HST, JWST, and ALMA We propose deep ACS and WFC3 imaging of two IR-luminous lensed galaxies at z~4 with 0.04-0.08" imaging of the dust emission from ALMA and approved panchromatic JWST imaging and IFU spectroscopy through the TEMPLATES Early Release Science program. These objects will immediately become some of the best characterized galaxies at high redshift, observed in virtually all typical SFR tracers at resolutions far beyond the unlensed diffraction limit. HST is the only facility capable of detecting and resolving the rest-UV emissions, filling a critical gap in existing data. The arrival of JWST imaging and spectroscopy later this year will enable comparisons of the distribution of star formation, stellar mass, stellar age, small and large dust grains, and other properties on highly resolved scales. Even without JWST, the HST data alone will allow for an unprecedented comparison between unobscured and obscured star formation traced by HST and ALMA on scales of 100-200pc. The HST data will allow us to place these objects in the context of the IRX-beta relation on spatial scales an order of magnitude finer than existing case studies, revealing whether and on what spatial scales geometric effects lead these dusty galaxies to fall far from the standard relations. The imminent addition of comprehensive JWST data will allow us to test key assumptions in widely-used SED fitting codes and the effects of spatial resolution on recovered properties. These observations complement substantial investments of JWST and ALMA time, have high legacy value, and we waive the HST exclusive access period to allow the community to benefit from these unparalleled HST+JWST+ALMA datasets. This program will acquire deep ACS+WFC3 imaging of two IR-luminous lensed galaxies at z~4. The goal is to spatially resolve the rest-UV emission of the background lensed sources, requiring careful removal of the much brighter foreground lens galaxies. For each target, we will observe to 5-orbit depth in ACS/F814W and 3-orbit depth in WFC3/F140W. For WFC3 we separate the program into 6 single-orbit visits (3 per source). We use four dither positions with WFC3-IR-DITHER-BOX to sample the PSF. We use a slightly larger dither pattern than the default as used by the 3D-HST project, corresponding to pixel positions of (0,0), (10,3.5), (6.5,10), and (-3.5,6.5), because some bad pixels come in clumps. We do not dither over the IR blobs or dead spot. We use a simple SPARS50 with NSAMP=14 at each dither position to fill out the orbits. For ACS we divide the 5orbit depth for each source into 3 visits consisting of 2/2/1 orbit each. In the two-orbit visits we use the default 4-position ACS-WFC-DITHER-BOX pattern; the single-orbit visits implement the ACS-WFC-DITHER-LINE pattern corresponding to only the first two positions of the BOX pattern. We use small POSTARG offsets in two of the visits in each source in order to maximize the effective number of dither points should all visits be executed at the same ORIENT. We use the WFC1 aperture to place the target galaxies near the center of the FOV while minimizing CTE. This will maximize the overlap with upcoming JWST NIRCAM+MIRI imaging for possible ancillary science, but our primary goals do not require uniform sensitivity or coverage of the chip gap (some of this may be filled in by visits scheduled at different times and roll angles, but it is not required for our primary science). We use ~1250s exposures at each dither position to fill out the orbits. The proposing team consists of members of the collaboration working to follow up and characterize the dusty, star-forming galaxies discovered by the South Pole Telescope. The team has a vast array of multiwavelength experience, including direct experience analyzing and deblending HST images very similar to those proposed here. We are also the half of the team of the JWST ERS program TEMPLATES focused on the highly dust-obscured targets of that program. PI Spilker is an expert in gravitational lensing and submm interferometry, and expects to lead the lensing and source reconstruction efforts and comparison between the rest-UV and rest-IR emission. Co-I's Gonzalez, Ma, and Chapman all have experience working with HST imaging, and our previous foreground/background source deblending using HST and Spitzer is published in Bothwell et al. (2013) and Ma et al. (2015). Co-I Casey has worked extensively to understand the IRX-beta relationship in the context of highly obscured galaxies (Casey et al. 2014). Co-I's Narayanan and Hayward will provide needed theoretical insights; both have previously published works concerning the relationship between obscured and unobscured star formation (Narayanan et al. 2017; Smith & Hayward 2018). Co-I Hayward also expects to perform the radiative transfer analysis necessary to compare our results with the FIRE-2 simulations. Co-I's Vieira and Phadke were primarily responsible for the design and implementation of the JWST ERS program, and expect to use the results from this program to inform the upcoming JWST observations. Galaxies 0 false false false false false false false false SUPPORTED GALAXY GRAVITATIONAL LENS HIGH REDSHIFT GALAXY STARBURST ULTRALUMINOUS IR GAL YES J2000 J2000 GALAXY GRAVITATIONAL LENS HIGH REDSHIFT GALAXY STARBURST ULTRALUMINOUS IR GAL YES J2000 J2000 ACS/WFC Imaging No No F814W WFC3/IR Imaging No No F140W ACS/WFC Imaging No No F814W WFC3/IR Imaging No No F140W POS-TARG DITHER 1.42 LINE 0.919 false false 76.301 4 17.370 WFC3-IR-DITHER-BOX-MIN 1 false POS-TARG DITHER 0.2637 LINE 0.1856 false false 69.02 4 20.7 ACS-WFC-DITHER-BOX 2 false POS-TARG DITHER 0.2637 LINE false false 2 20.7 ACS-WFC-DITHER-LINE 3 false The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. /Users/jspilker/Research/Proposals/HST/Cycle30_2022/Cycle30_ERS_IRXbeta/OP-cache/hstcy30_ers_irxbeta_phaseII-v01.xml 1681104359000 129.74847146711983 (Tic-Visit :proposal-id 17108 :visit-id "01" :proposal-version -1 :trans-version "20220630" :date "25-Oct-2022 19:39:00.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1044528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "01" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2842 :al-overhead-at-end 0 :internal-dur-at-end 519 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3285 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. HOPR repeat of visit 1 (Tic-Visit :proposal-id 17108 :visit-id "51" :proposal-version -1 :trans-version "20220630" :date "19-May-2023 12:19:17.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1044528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "51" :obset-id "51" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "51" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2842 :al-overhead-at-end 0 :internal-dur-at-end 519 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3285 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. /Users/jspilker/Research/Proposals/HST/Cycle30_2022/Cycle30_ERS_IRXbeta/OP-cache/hstcy30_ers_irxbeta_phaseII-v02.xml 1681281495000 131.88098504063947 (Tic-Visit :proposal-id 17108 :visit-id "02" :proposal-version -1 :trans-version "20220630" :date "25-Oct-2022 19:39:00.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1044528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "02" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2842 :al-overhead-at-end 0 :internal-dur-at-end 519 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3285 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. /Users/jspilker/Research/Proposals/HST/Cycle30_2022/Cycle30_ERS_IRXbeta/OP-cache/hstcy30_ers_irxbeta_phaseII-v03.xml 1681287459000 131.9529001264359 (Tic-Visit :proposal-id 17108 :visit-id "03" :proposal-version -1 :trans-version "20220630" :date "25-Oct-2022 19:39:01.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1044528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "03" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2842 :al-overhead-at-end 0 :internal-dur-at-end 519 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3285 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. /Users/jspilker/Research/Proposals/HST/Cycle30_2022/Cycle30_ERS_IRXbeta/OP-cache/hstcy30_ers_irxbeta_phaseII-v04.xml 1682980349000 267.0 (Tic-Visit :proposal-id 17108 :visit-id "04" :proposal-version -1 :trans-version "20220630" :date "25-Oct-2022 19:39:01.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1044528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "04" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2842 :al-overhead-at-end 0 :internal-dur-at-end 519 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3333 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. /Users/jspilker/Research/Proposals/HST/Cycle30_2022/Cycle30_ERS_IRXbeta/OP-cache/hstcy30_ers_irxbeta_phaseII-v05.xml (Tic-Visit :proposal-id 17108 :visit-id "05" :proposal-version -1 :trans-version "20220630" :date "25-Oct-2022 19:39:02.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1044528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "05" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2842 :al-overhead-at-end 0 :internal-dur-at-end 519 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3333 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. /Users/jspilker/Research/Proposals/HST/Cycle30_2022/Cycle30_ERS_IRXbeta/OP-cache/hstcy30_ers_irxbeta_phaseII-v06.xml 1686176497000 268.8077720104069 (Tic-Visit :proposal-id 17108 :visit-id "06" :proposal-version -1 :trans-version "20220630" :date "25-Oct-2022 19:39:02.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1044528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "06" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2842 :al-overhead-at-end 0 :internal-dur-at-end 519 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3333 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. HOPR Repeat of visit 6 (Tic-Visit :proposal-id 17108 :visit-id "56" :proposal-version -1 :trans-version "20220630" :date "27-Jul-2023 10:48:07.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1044528 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "56" :obset-id "56" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "56" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2842 :al-overhead-at-end 0 :internal-dur-at-end 519 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3333 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. /Users/jspilker/Research/Proposals/HST/Cycle30_2022/Cycle30_ERS_IRXbeta/OP-cache/hstcy30_ers_irxbeta_phaseII-v07.xml 1680836085000 126.55944912329159 (Tic-Visit :proposal-id 17108 :visit-id "07" :proposal-version -1 :trans-version "20220630" :date "25-Oct-2022 19:39:02.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 1136896 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "07" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2902 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3285 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17108 :visit-id "07" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2820 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3285 :pcs-gap 0 ) true 2 0 The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. /Users/jspilker/Research/Proposals/HST/Cycle30_2022/Cycle30_ERS_IRXbeta/OP-cache/hstcy30_ers_irxbeta_phaseII-v08.xml 1681179348000 126.92860872927758 (Tic-Visit :proposal-id 17108 :visit-id "08" :proposal-version -1 :trans-version "20220630" :date "25-Oct-2022 19:39:03.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 1136896 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "08" :obset-id "08" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "08" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2902 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3285 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17108 :visit-id "08" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2820 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3285 :pcs-gap 0 ) true 2 0 The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. /Users/jspilker/Research/Proposals/HST/Cycle30_2022/Cycle30_ERS_IRXbeta/OP-cache/hstcy30_ers_irxbeta_phaseII-v09.xml 1676789089000 80.40631094648921 (Tic-Visit :proposal-id 17108 :visit-id "09" :proposal-version -1 :trans-version "20220630" :date "25-Oct-2022 19:39:04.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 568448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "09" :obset-id "09" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "09" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2902 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3285 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. /Users/jspilker/Research/Proposals/HST/Cycle30_2022/Cycle30_ERS_IRXbeta/OP-cache/hstcy30_ers_irxbeta_phaseII-v12.xml 1682986253000 244.5 (Tic-Visit :proposal-id 17108 :visit-id "12" :proposal-version -1 :trans-version "20220630" :date "25-Oct-2022 19:39:04.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 1136896 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "12" :obset-id "12" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "12" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2950 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3333 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17108 :visit-id "12" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2868 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3333 :pcs-gap 0 ) true 2 0 The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. /Users/jspilker/Research/Proposals/HST/Cycle30_2022/Cycle30_ERS_IRXbeta/OP-cache/hstcy30_ers_irxbeta_phaseII-v13.xml 1682997611000 244.5 (Tic-Visit :proposal-id 17108 :visit-id "13" :proposal-version -1 :trans-version "20220630" :date "25-Oct-2022 19:39:05.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 1136896 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "13" :obset-id "13" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "13" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2950 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3333 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17108 :visit-id "13" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2868 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3333 :pcs-gap 0 ) true 2 0 The scheduling data was generated by CASM 31.0. CASM was run in Phase II mode. /Users/jspilker/Research/Proposals/HST/Cycle30_2022/Cycle30_ERS_IRXbeta/OP-cache/hstcy30_ers_irxbeta_phaseII-v14.xml 1682186665000 241.33457307177815 (Tic-Visit :proposal-id 17108 :visit-id "14" :proposal-version -1 :trans-version "20220630" :date "25-Oct-2022 19:39:05.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 568448 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17108 :visit-id "14" :obset-id "14" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17108 :visit-id "14" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2950 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3333 :pcs-gap 0 ) true 1 0