0 Assigned ID: 1031 ----- Attempting Submission 1 (Fri Apr 11 23:17:33 GMT 2014) ----- new visit 16, copy of visit 15 lost in June 2015 safing 2087661060 ----- Attempting Submission 1 (Thu Jul 24 14:54:30 GMT 2014) ----- ----- Attempting Submission 2 (Mon Jun 08 17:28:08 GMT 2015) ----- Resolving the faint end of the satellite luminosity function for the nearest elliptical Centaurus A We request HST/ACS imaging to follow up 15 new faint candidate dwarfs around the nearest elliptical Centaurus A (3.8 Mpc). The dwarfs were found via a systematic ground-based (Magellan/Megacam) survey out to ~150 kpc, designed to directly confront the "missing satellites" problem in a wholly new environment. Current Cold Dark Matter models for structure formation fail to reproduce the shallow slope of the satellite luminosity function in spiral-dominated groups for which dwarfs fainter than M_V<-14 have been surveyed (the Local Group and the nearby, interacting M81 group). Clusters of galaxies show a better agreement with cosmological predictions, suggesting an environmental dependence of the (poorly-understood) physical processes acting on the evolution of low mass galaxies (e.g., reionization). However, the luminosity function completeness for these rich environments quickly drops due to the faintness of the satellites and to the difficult cluster membership determination. We target a yet unexplored "intermediate" environment, a nearby group dominated by an elliptical galaxy, ideal due to its proximity: accurate (10%) distance determinations for its members can be derived from resolved stellar populations. The proposed observations of the candidate dwarfs will confirm their nature, group membership, and constrain their luminosities, metallicities, and star formation histories. We will obtain the first complete census of dwarf satellites of an elliptical down to an unprecedented M_V<-9. Our results will crucially constrain cosmological predictions for the faint end of the satellite luminosity function to achieve a more complete picture of the galaxy formation process. The observations are going to be performed with ACS/WFC (primary) and WFC3/UVIS (parallel). We request imaging in F606W and F814W filters (broad V and I) for both instruments, in order to compute accurate TRGB distances for our targets and characterize their stellar content (star formation histories and metallicities), while optimizing the exposure times. The parallel pointings will allow us to observe a field region next to our targets. We will thus be able to estimate more precisely the number of background/foreground contaminants and CenA halo RGB stars present in our ACS fields. At the same time, these will be valuable pointings for the characterization of the nearest elliptical galaxy's halo populations. To achieve our goal, we need to obtain a minimum SNR of 10 at ~1 mag below the TRGB in I band, assuming that the TRGB is found at M_I = -4.0 and M_V = -2.5 (assuming metal-poor populations with an average V-I=1.5). Since the exact distances for our targets are unknown, the candidate CenA satellites are assumed to be at the distance of CenA (~3.8 Mpc), thus the TRGB is expected to be found at I~24 and V~25.5. This requires ~1200 sec in the F606W filter and ~900 sec in the F814W filter, which nicely fit into one orbit per object after taking into account overheads and adopting a 2-point dither pattern for each exposure, in order to remove detector defects. Given the size of the selected targets, in just one pointing we will be able to observe their whole spatial extent (i.e., out to the tidal radius), necessary to detect possible spatial gradients in the galaxies' stellar populations. The only exception is CENA-DW-133013-415321, which will not be entirely covered in one ACS/WFC pointing. However, another of our candidate dwarfs (CENA-DW-132956-415220) lies at projected distance of 3 arcmin from CENA-DW-133013-415321, such that with a loose ORIENT requirement we will be able to target the outskirts of this extended dwarf. We additionally include ORIENT constraints to avoid bright stars in either of the primary ACS and parallel WFC3 pointings, or to avoid overlap between our pointings. RESOLVED STELLAR POPULATIONS 12 Regular false false false false false SUPPORTED GALAXY DWARF SPHEROIDAL estimated TRGB magnitude CENA-MM-DW1 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW2 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW3 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW4 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW5 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW6 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW7 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW8 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW9 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW10 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW11 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW12 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW13 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW14 J2000 J2000 GALAXY DWARF SPHEROIDAL CENA-MM-DW15 J2000 J2000 ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W WFC3/UVIS Imaging No No F606W WFC3/UVIS Imaging No No F814W POS-TARG DITHER 3.011 LINE false false 2 85.28 ACS-WFC-DITHER-LINE 1 false The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13856 :visit-id "01" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:10:46.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13856 :visit-id "02" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:10:48.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 1434362538000 90.79552373104661 (Tic-Visit :proposal-id 13856 :visit-id "03" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:10:50.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 1433614036000 88.5 (Tic-Visit :proposal-id 13856 :visit-id "04" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:10:51.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 1434368505000 90.86556161160428 (Tic-Visit :proposal-id 13856 :visit-id "05" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:10:53.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13856 :visit-id "06" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:10:54.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 1434111315000 87.00764000965728 (Tic-Visit :proposal-id 13856 :visit-id "07" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:10:56.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "07" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 1429356751000 3.714182760440991 (Tic-Visit :proposal-id 13856 :visit-id "08" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:10:58.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "08" :obset-id "08" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "08" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 1429362472000 8.831313943242094 (Tic-Visit :proposal-id 13856 :visit-id "09" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:10:59.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "09" :obset-id "09" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "09" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 1429398340000 25.0 (Tic-Visit :proposal-id 13856 :visit-id "10" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:11:01.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "10" :obset-id "10" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "10" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 1434892678000 93.93404995767042 (Tic-Visit :proposal-id 13856 :visit-id "11" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:11:02.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "11" :obset-id "11" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "11" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 1429952317000 21.12846649886859 (Tic-Visit :proposal-id 13856 :visit-id "12" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:11:04.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "12" :obset-id "12" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "12" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 1434712007000 86.67747185571898 (Tic-Visit :proposal-id 13856 :visit-id "13" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:11:06.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "13" :obset-id "13" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "13" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13856 :visit-id "14" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:11:07.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "14" :obset-id "14" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "14" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 22.2. CASM was run in Phase II mode. 1433509486000 79.88580026247348 (Tic-Visit :proposal-id 13856 :visit-id "15" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:11:09.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "15" :obset-id "15" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "15" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) true 1 0 copy of visit 15 lost in safing 6/4/15 (Tic-Visit :proposal-id 13856 :visit-id "15" :proposal-version -1 :trans-version "20140605" :date "23-Jul-2014 13:11:09.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2291888 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13856 :visit-id "15" :obset-id "15" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13856 :visit-id "15" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2983 :al-overhead-at-end 116 :internal-dur-at-end 1015 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3316 :pcs-gap 0 ) false 1 0