0 Assigned ID: 1005 ----- Attempting Submission 1 (Fri Apr 05 23:54:25 GMT 2019) ----- HST Phase I Proposal 1005 (eMACS.apt) successfully submitted. Receipt: # 1005-1 ----- Attempting Submission 2 (Fri Apr 05 23:58:25 GMT 2019) ----- Adjusted visits 3, 6 (now split into visits 6 and 7), former visits 8 and 9 (now 9 and 10) to improve access to guide stars 1605709760 ----- Attempting Submission 1 (Thu Jul 25 19:40:34 GMT 2019) ----- ----- Attempting Submission 2 (Thu Aug 01 00:25:13 GMT 2019) ----- Target coordinates were confirmed using Aladin. Monsters in the making: extreme cluster mergers at z>0.5 We propose multi-passband observations of five exceptional galaxy clusters at z>0.5 discovered by the eMACS project, in order to map their gravitational-lensing strength and determine the merger phase and geometry, thereby assessing their potential for future, extremely deep lensing and structure evolution studies in the era of 30m telescopes and JWST. In recognition of the fact that the vast majority of powerful cluster lenses are active mergers, we selected our targets to be dynamically highly disturbed systems with X-ray luminosities and velocity dispersions rivaling those of MACSJ0717.5+3745, the most powerful cluster lens known. Although some HST data exist for our targets, deeper and wider observations are indispensable for the identification of multi-image systems over the full extent of the strong-lensing regime of these potential monster lenses. In conjunction with supporting Chandra observations also requested here, the proposed HST imaging project will (1) provide robust estimates of our targets' lensing strength, (2) establish the temporal phase of the collision, and (3) yield tentative constraints on the collisional properties of dark matter from the offsets between the X-ray and dark-matter peaks. By evaluating the power and potential of these newly discovered, extreme systems, the proposed project stands to add HFF-caliber cluster targets in a critical, yet hitherto poorly sampled and explored mass and redshift regime. We model our observational approach after the strategy successfully employed by the RELICS Legacy Program, which, pursuing similar science goals in their observations of clusters at comparable redshifts, invested 5 orbits per cluster, employing the ACS filters F435W, F606W, and F814W (1 orbit each), as well as the WFC3/IR filters F105W, F125W, F140W, and F160W (1/2 orbit each). This combination seamlessly covers the range from 4000A to 1.7micron, thus probing the spectral-energy distribution of cluster members from the near-UV to the z-band (rest frame), while offering excellent color discrimination for lensed background galaxies at z = 1-6, the redshift range expected to dominate the population of strongly lensed galaxies. Although not as deep as the CLASH observations (partly as a result of the reduced number of passbands), this approach still vastly improves upon the SNAPhot images that exist for some of our targets, yielding 5sigma detections at the peak of the magnitude distribution of lensed galaxies at AB magnitudes of approximately 26 (Postman et al., 2012), thus ensuring the detectability of over half a dozen multiple-image systems per cluster. Although photometric redshifts obtained from only seven passbands will be less robust than those based on photometry in CLASH's 16 filters, the predicted statistical uncertainties of less than 10% for the chosen filter combination (Jouvel et al., 2014) will be sufficient to yield tight constraints on our lens models. We further emphasize that we will make full use of groundbased facilities to secure spectroscopic redshifts of strong-lensing features, using both optical and NIR spectrographs. The ACS apertures used in our observations must be carefully positioned for several of our targets (specifically eMACSJ1756 and eMACSJ1823) to ensure coverage of the entire merger. In recognition of the much smaller field of view of WFC3/IR, two separate WFC3/IR pointings are needed for these two targets at the indicated depth in all listed passbands. Although the orientation of the WFC3/IR tiles is not critical, ORIENT angles as requested will greatly help maximize the contiguous coverage of the cluster cores in all passbands. Dr. Hakim Atek is an expert in lensing-assisted studies of distant background galaxies who has contributed significantly to the progress facilitated in this field by the Hubble Frontier Fields observations. His extensive background in the characterization of lensed objects from multi-passband HST images makes him a key member of our team specifically for the identification of dropout candidates. Dr. Harald Ebeling is an expert in the identification and characterization of X-ray luminous galaxy clusters who was instrumental in the discovery of the majority of the cluster lenses studied by the Hubble Frontier Fields initiative. His research covers a wide range of cluster-related topics, including ram-pressure stripping in dense environments and the collisional properties of dark matter. As the PI of over a dozen successful HST proposals, he has extensive experience with the design and analysis of the type of observations proposed here. He has access to all astronomical facilities on Maunakea, which will be critical for this project, and will lead the X-ray analysis of the proposed Chandra observations. Dr. Anton Koekemoer is an expert in the construction of HST imaging mosaics and has implemented innovative techniques to advance the scientific quality of mosaics in most of the large HST cosmological programs since the early 2000s (including GOODS, COSMOS, HUDF, CANDELS, CLASH, HFF). He will provide state-of-the-art data products from the proposed observations and participate in scientific analyses related to his interest in galaxy evolution. Dr. Marceau Limousin is an expert in gravitational-lensing studies of galaxy clusters and large-scale structure with emphasis on the properties and dynamical evolution of dark-matter halos. Having lead several projects that created high-precision mass models of cluster lenses from strong-lensing constraints, he will work closely with Johan Richard on the iterative development of lens models of our targets based on the proposed HST observations. Dr. Johan Richard is an expert in strong gravitational lensing who played a central role in the assessment, selection, and calibration of cluster lenses for the HFF program. He has extensive experience with the analysis and interpretation of strong-lensing observations, both on galaxy and cluster scales, and will lead the lens-modeling effort using the LENSTOOL package. Dr. Ian Smail is an expert in the study and characterization of high-redshift galaxies specifically at submm wavelengths. His broad expertise and interests in galaxy evolution across the electromagnetic spectrum are essential assets to our team and will be particularly valuable for the analysis and interpretation of both statistical and individual datasets characterizing the galaxy populations within and behind our target clusters. Mr. Lukas Zalesky is a graduate student at IfA working on the characterization of eMACS clusters as gravitational lenses using the groundbased observations shown in this proposal. He will participate in the strong-lensing analysis of the HST data under the guidance of the PI and the aforementioned experts in this field. Cosmology 6 false false false false false false 80 true SUPPORTED CLUSTER OF GALAXIES GRAVITATIONAL LENS HIGH REDSHIFT CLUSTER J2000 J2000 CLUSTER OF GALAXIES GRAVITATIONAL LENS HIGH REDSHIFT CLUSTER J2000 J2000 CLUSTER OF GALAXIES GRAVITATIONAL LENS HIGH REDSHIFT CLUSTER J2000 J2000 CLUSTER OF GALAXIES GRAVITATIONAL LENS HIGH REDSHIFT CLUSTER Copy of target 3. This target is used with vistis 6 & 7. RA and Dec needed to be shifted to find guide star pairs. J2000 J2000 CLUSTER OF GALAXIES GRAVITATIONAL LENS HIGH REDSHIFT CLUSTER J2000 J2000 CLUSTER OF GALAXIES GRAVITATIONAL LENS HIGH REDSHIFT CLUSTER J2000 J2000 CLUSTER OF GALAXIES GRAVITATIONAL LENS HIGH REDSHIFT CLUSTER J2000 J2000 CLUSTER OF GALAXIES GRAVITATIONAL LENS HIGH REDSHIFT CLUSTER J2000 J2000 CLUSTER OF GALAXIES GRAVITATIONAL LENS HIGH REDSHIFT CLUSTER J2000 J2000 CLUSTER OF GALAXIES GRAVITATIONAL LENS HIGH REDSHIFT CLUSTER J2000 J2000 ACS/WFC Imaging No No F435W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W ACS/WFC Imaging No No F435W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W ACS/WFC Imaging No No F435W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W ACS/WFC Imaging No No F435W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W ACS/WFC Imaging No No F435W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/IR Imaging No No F105W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W POS-TARG DITHER 3.058944 LINE 6.039452 false false 179.702031 4 85.329042 ACS-WFC-DITHER-BOX 2 false The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1579585822000 77.92611104996291 (Tic-Visit :proposal-id 15844 :visit-id "01" :proposal-version -1 :trans-version "20190514" :date "31-Jul-2019 13:49:56.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 3410688 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15844 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15844 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2821 :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 3157 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "01" :orbit-number 2 :pcs-time 302 :si-vis-utilization 2854 :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 3157 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "01" :orbit-number 3 :pcs-time 302 :si-vis-utilization 2854 :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 3157 :pcs-gap 0 ) false 3 0 The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1599319107000 277.0 (Tic-Visit :proposal-id 15844 :visit-id "02" :proposal-version -1 :trans-version "20190514" :date "31-Jul-2019 13:50:01.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4038896 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15844 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15844 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2812 :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 3157 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "02" :orbit-number 2 :pcs-time 302 :si-vis-utilization 2812 :al-overhead-at-end 0 :internal-dur-at-end 614 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3157 :pcs-gap 0 ) false 2 0 /private/var/folders/zc/ljhf1lgn10b1yd9ytmwlp4jr00070l/T/OPVisit16672183382326065432.xml (Tic-Visit :proposal-id 15844 :visit-id "52" :proposal-version -1 :trans-version "20200619" :date "18-Sep-2020 13:10:07.0" :trans-errors '(:WARNINGS 1 :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 2019440 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15844 :visit-id "52" :obset-id "52" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15844 :visit-id "52" :orbit-number 1 :pcs-time 383 :si-vis-utilization 2812 :al-overhead-at-end 0 :internal-dur-at-end 614 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3157 :pcs-gap 0 ) true 1 1 The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1591634188000 134.95965680806881 (Tic-Visit :proposal-id 15844 :visit-id "03" :proposal-version -1 :trans-version "20190514" :date "31-Jul-2019 13:50:04.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 3410688 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15844 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15844 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2905 :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 3238 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "03" :orbit-number 2 :pcs-time 302 :si-vis-utilization 2934 :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 3238 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "03" :orbit-number 3 :pcs-time 302 :si-vis-utilization 2934 :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 3238 :pcs-gap 0 ) false 3 0 The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1591622753000 135.54719090916763 (Tic-Visit :proposal-id 15844 :visit-id "04" :proposal-version -1 :trans-version "20190514" :date "31-Jul-2019 13:50:07.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4160752 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15844 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15844 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2887 :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 3238 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "04" :orbit-number 2 :pcs-time 302 :si-vis-utilization 2912 :al-overhead-at-end 0 :internal-dur-at-end 633 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3238 :pcs-gap 0 ) false 2 0 The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1590576828000 160.0 (Tic-Visit :proposal-id 15844 :visit-id "05" :proposal-version -1 :trans-version "20190514" :date "31-Jul-2019 13:50:13.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 3410688 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15844 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15844 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2821 :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 3157 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "05" :orbit-number 2 :pcs-time 302 :si-vis-utilization 2854 :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 3157 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "05" :orbit-number 3 :pcs-time 302 :si-vis-utilization 2854 :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 3157 :pcs-gap 0 ) false 3 0 The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1593694285000 131.0 (Tic-Visit :proposal-id 15844 :visit-id "06" :proposal-version -1 :trans-version "20190514" :date "31-Jul-2019 13:50:15.0" :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 2019440 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15844 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15844 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2812 :al-overhead-at-end 0 :internal-dur-at-end 614 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3157 :pcs-gap 0 ) false 1 0 The scheduling data was generated by CASM 27.2. 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CASM was run in Phase II mode. 1587563287000 223.0 (Tic-Visit :proposal-id 15844 :visit-id "09" :proposal-version -1 :trans-version "20190514" :date "31-Jul-2019 13:50:22.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4160752 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15844 :visit-id "09" :obset-id "09" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15844 :visit-id "09" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2887 :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 3238 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "09" :orbit-number 2 :pcs-time 302 :si-vis-utilization 2912 :al-overhead-at-end 0 :internal-dur-at-end 633 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3238 :pcs-gap 0 ) false 2 0 The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1587574734000 227.0 (Tic-Visit :proposal-id 15844 :visit-id "10" :proposal-version -1 :trans-version "20190514" :date "31-Jul-2019 13:50:26.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4160752 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15844 :visit-id "10" :obset-id "10" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15844 :visit-id "10" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2887 :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 3238 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "10" :orbit-number 2 :pcs-time 302 :si-vis-utilization 2912 :al-overhead-at-end 0 :internal-dur-at-end 633 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3238 :pcs-gap 0 ) false 2 0 The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. 1599871088000 105.97465896156041 (Tic-Visit :proposal-id 15844 :visit-id "11" :proposal-version -1 :trans-version "20190514" :date "31-Jul-2019 13:50:30.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 3410688 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15844 :visit-id "11" :obset-id "11" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15844 :visit-id "11" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3185 :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 3519 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "11" :orbit-number 2 :pcs-time 302 :si-vis-utilization 3214 :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 3519 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "11" :orbit-number 3 :pcs-time 302 :si-vis-utilization 3214 :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 3519 :pcs-gap 0 ) false 3 0 The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 15844 :visit-id "12" :proposal-version -1 :trans-version "20190514" :date "31-Jul-2019 13:50:34.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4456688 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15844 :visit-id "12" :obset-id "12" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15844 :visit-id "12" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3112 :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 3519 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "12" :orbit-number 2 :pcs-time 302 :si-vis-utilization 3112 :al-overhead-at-end 0 :internal-dur-at-end 690 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3519 :pcs-gap 0 ) false 2 0 The scheduling data was generated by CASM 27.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 15844 :visit-id "13" :proposal-version -1 :trans-version "20190514" :date "31-Jul-2019 13:50:37.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 4456688 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15844 :visit-id "13" :obset-id "13" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15844 :visit-id "13" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3112 :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 3519 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15844 :visit-id "13" :orbit-number 2 :pcs-time 302 :si-vis-utilization 3112 :al-overhead-at-end 0 :internal-dur-at-end 690 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3519 :pcs-gap 0 ) false 2 0