0Assigned ID: 372
----- Attempting Submission 1 (Fri Apr 10 06:04:24 GMT 2015) -----
HST Phase I Proposal 372 (Neptune Phase I.apt) successfully submitted.
Receipt: # 372-1Per discussion with Tony Roman, this plan has been revised to accommodate HST orbits that are affected by the SAA. Visits 01,
02, and 04 now each contain two uninterruptible sequences, with the expectation that the SAA will introduce a time gap between
the two sequences. The time constraints on each visit now identify one or two specific HST orbits, based on a list provided by
Tony. The time windows have been selected to optimize the orbital coverage of ring arcs and all the moons.1483974346----- Attempting Submission 1 (Tue Jul 21 20:10:41 GMT 2015) -----
----- Attempting Submission 2 (Wed Jul 20 05:27:07 GMT 2016) -----Neptune's Evolving Inner Moons and Ring-ArcsThis program will address three key science goals related to the rings and inner moons of Neptune. (1) We will recover S/2004 N 1, Neptune's 14th moon, whose discovery was announced by STScI in 2013. This 8-10 km moon orbits between the much larger moons Larissa and Proteus, raising questions about its origin and orbital stability. Measurements from Cycle 23 will supplement the only existing measurements from 2004-2005 and 2009, giving us necessary confirmation of the discovery and providing much stricter constraints on the moon's orbital elements. (2) We will locate Naiad, the innermost known moon, whose orbital position appears to have jumped by 81 degrees in orbital longitude between 2002 and 2004. New measurements will determine whether (a) the 2002 measurements were erroneous, or (b) the moon follows a highly perturbed orbit. If the latter, our measurements will place strong constraints on the nature of these unknown perturbations. (3) We will revisit the arc system embedded in the Adams ring of Neptune. The leading arcs have disappeared since the 1989 Voyager flyby; the trailing arcs have been more stable, although they appear to be fading slowly. We will investigate this unexplained trend, and also seek out evidence for other subtle changes in the rings, by obtaining the first rotationally complete, visual-band profile of the ring-arcs since 1989.Five single-orbit visits to Neptune are spaced out over time to obtain complete orbital coverage of Naiad, S/2004 N 1, and the Adams ring. Each visit contains eleven long exposures through filter F350LP to detect the small moons and faint rings. A single, unsaturated exposure of Neptune is included in each visit for geometric and photometric reference. A dither step is inserted half-way through each orbit so that the influence of hot pixels can be suppressed. All visits are oriented such that Neptune's pole is roughly aligned with the Y-axis of the CCD. This is necessary so that the saturation bloom is separated from the rings and moons, which extend primarily to the right and left. However, we use a slightly different roll angle for each visit because this will help us to separate out the rings from the pattern of glare surrounding Neptune. Based on SAA constraints, four visits have been modified to be split across consecutive SAA-affected orbits.Solar System12falsefalsefalsefalsefalsefalseSUPPORTEDSOLAR SYSTEMPLANETPlanet NeptuneSTD=NEPTUNENOT ECL P PARTIAL OF NEPTUNE BY TRITON FROM EARTHEARTHWFC3/UVISImagingNoNoF350LPWFC3/UVISImagingNoNoF475WWFC3/UVISImagingNoNoF606WWFC3/UVISImagingNoNoF775W/private/var/folders/wy/1xkr66491rl7bp6vjzj_6r6h0000gn/T/OPVisit1197240991138442344.xmlUsing ephemeris for target 14217-01-NEPTUNEephemeris data for target 14217-01-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 15.213 to 17.182. ephemeris interval: 16.182 to 18.182The scheduling data was generated by CASM 24.2.CASM was run in Phase II mode.Neptune oriented with its pole oriented 9 degrees counterclockwise from the Y-axis. This visit is split across two consecutive SAA-affected orbits. A dither shift of 5 pixels along the X and Y axes occurs half-way through the visit. Time intervals between HST orbits have been selected to sample Naiad, S/20014 N 1 and the Adams ring at a full range of orbital longitudes. This visit is timed to place S/20014 N 1 and the arcs on the east side of Neptune.(Tic-Visit
:proposal-id 14217
:visit-id "01"
:proposal-version -1
:trans-version "20160601"
:date "19-Jul-2016 22:19:30.0"
: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 54928
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14217
:visit-id "01"
:obset-id "01"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14217
:visit-id "01"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2689
:al-overhead-at-end 0
:internal-dur-at-end 97
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3210
:pcs-gap 0
)true10/private/var/folders/wy/1xkr66491rl7bp6vjzj_6r6h0000gn/T/OPVisit5756919294575424054.xmlUsing ephemeris for target 14217-02-NEPTUNEephemeris data for target 14217-02-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 15.213 to 17.182. ephemeris interval: 16.182 to 18.182The scheduling data was generated by CASM 24.2.CASM was run in Phase II mode.Neptune oriented with its pole 9 degrees clockwise from the Y-axis. This visit is split across two consecutive SAA-affected orbits. A dither shift of 5 pixels along the X and Y axes occurs half-way through the visit. Time intervals between HST orbits have been selected to sample Naiad, S/20014 N 1 and the Adams ring at a full range of orbital longitudes. This visit is timed to place S/20014 N 1 on the east side of Neptune and the arcs on the west side.(Tic-Visit
:proposal-id 14217
:visit-id "02"
:proposal-version -1
:trans-version "20160601"
:date "19-Jul-2016 22:20:33.0"
: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 54928
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14217
:visit-id "02"
:obset-id "02"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14217
:visit-id "02"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2680
:al-overhead-at-end 0
:internal-dur-at-end 97
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3210
:pcs-gap 0
)true10/private/var/folders/wy/1xkr66491rl7bp6vjzj_6r6h0000gn/T/OPVisit7525744598510953420.xmlUsing ephemeris for target 14217-03-NEPTUNEephemeris data for target 14217-03-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 15.213 to 17.182. ephemeris interval: 16.182 to 18.182The scheduling data was generated by CASM 24.2.CASM was run in Phase II mode.Neptune oriented with its pole 3 degrees clockwise from the Y-axis. This is a two-orbit visit. A dither shift of 5 pixels along the X and Y axes occurs half-way through each orbit. Time intervals between HST orbits have been selected to sample Naiad, S/20014 N 1 and the Adams ring at a full range of orbital longitudes. This visit is timed to place S/20014 N 1 and the arcs on the west side of Neptune.(Tic-Visit
:proposal-id 14217
:visit-id "03"
:proposal-version -1
:trans-version "20160601"
:date "19-Jul-2016 22:20:35.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 2
:saa-model "29"
:si-bright-earth-limb-angle 20.0
:data-volume 114416
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14217
:visit-id "03"
:obset-id "03"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14217
:visit-id "03"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2680
: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 3210
:pcs-gap 0
)
(Tic-Orbit
:proposal-id 14217
:visit-id "03"
:orbit-number 2
:pcs-time 222
:si-vis-utilization 2772
:al-overhead-at-end 0
:internal-dur-at-end 162
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3210
:pcs-gap 0
)true20/private/var/folders/wy/1xkr66491rl7bp6vjzj_6r6h0000gn/T/OPVisit8674514696382735209.xmlUsing ephemeris for target 14217-04-NEPTUNEephemeris data for target 14217-04-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 15.213 to 17.182. ephemeris interval: 16.182 to 18.182The scheduling data was generated by CASM 24.2.CASM was run in Phase II mode.Neptune oriented with its pole oriented 3 degrees counterclockwise from the Y-axis. This visit is split across two SAA-affected orbits. A dither shift of 5 pixels along the X and Y axes occurs half-way through the visit. Time intervals between HST orbits have been selected to sample Naiad, S/20014 N 1 and the Adams ring at a full range of orbital longitudes. Times to place S/20014 N 1 on the west side of Neptune and the arcs on the east side.(Tic-Visit
:proposal-id 14217
:visit-id "04"
:proposal-version -1
:trans-version "20160601"
:date "19-Jul-2016 22:20:36.0"
: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 54928
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 14217
:visit-id "04"
:obset-id "04"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 14217
:visit-id "04"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2689
:al-overhead-at-end 0
:internal-dur-at-end 97
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3210
:pcs-gap 0
)true10