Corrections with respect to previous version:
1. Forgot to include one of the co-Is.
2. Edited Science Justification figures and text with co-I comments.-1987721359Assigned ID: 1215
----- Attempting Submission 1 (Wed Sep 30 00:38:05 GMT 2020) -----
HST Phase I Proposal 1215 successfully submitted.
Receipt: # 1215-1
----- Attempting Submission 2 (Wed Sep 30 23:54:04 GMT 2020) -----
----- Attempting Submission 3 (Wed Oct 07 14:03:30 GMT 2020) -----FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browser
FLASH level may be too low for this exposure or a short subexposure. See extended explanation in the diagnostic browserI received an error message saying "offline: submission failed."
So I am trying to resubmit.1176893603----- Attempting Submission 1 (Mon Nov 09 05:49:36 GMT 2020) -----
----- Attempting Submission 2 (Mon Nov 09 05:51:47 GMT 2020) -----Observations of bright extended targets (including Neptune) do not require
post-flash illumination, because the target effectively flashes the charge traps
automatically. See Sec. 2.5 of Wong et al. (2020, DOI 10.3847/1538-4365/ab775f).The Extended Death Throes of a Dark Vortex on NeptuneA dark vortex (called NDS-2018) has been discovered on Neptune, and tracked over three years. This very dark feature has a higher contrast than any other previous vortex (including the Great Dark Spot seen by Voyager). After its first sighting in 2018, it has also lacked obvious "companion clouds" that are common to most other dark spots. But most critically, 2019 data showed that the vortex was drifting equatorward. This was the first instance when a dark vortex tracked by HST actually followed the patterns of equatorward drift seen in numerical models.
Models predict that vortices disrupt after crossing a critical latitude of ~15 deg from the equator. But 2020 HST data showed that instead of drifting and subsequently disrupting, NDS-2018 had arrested its motion just short of the predicted critical latitude. We propose imaging observations prior to Jan 2021 (solar avoidance) to investigate vortex evolution and potential global-scale changes in Neptune's atmosphere.
We will search for oscillations in position and shape (as seen by Voyager for previous vortices), and measure drift in both latitude and longitude. Drift rates and oscillations are key parameters used by numerical models to constrain atmospheric properties such as the thermal structure, methane abundance, and deep winds---all of which remain open questions slated for eventual investigation by atmospheric entry probes in the coming decades. We will also follow up on a small transient dark spot in January 2020 data that may represent a stage of the disruption process, characterize a dramatic drop in northern CH4-cloud activity, and track south polar features unrelated to the vortex.We image Neptune in a set of 5 filters. Exposures are dithered and spread over each full orbit (for additional rotational dithering), to smooth out pixel-to-pixel noise on WFC3/UVIS. The goal is to achieve 14 frames of F467M (most sensitive to the dark vortex) per orbit, and exposures in other filters may be cut or have reduced exposure times if visibility window duration is restricted.
A single Neptune rotation is covered by 5 orbits (visits 1-5), each separated from each other by one orbit to span the 16 hour rotation period.
A second Neptune rotation is similarly covered by visits 6-10. The two rotations should be observed within 4 days of each other.Team expertise and background documents are not required for Mid-Cycle proposals.Solar System Astronomy3falsefalsefalsefalsefalsefalsefalseSUPPORTEDSOLAR SYSTEMYESPLANETNeptuneSTD=NEPTUNENOT ECL P PARTIAL OF NEPTUNE BY TRITON FROM EARTHEARTHWFC3/UVISImagingNoNoF390MWFC3/UVISImagingNoNoF467MWFC3/UVISImagingNoNoF547MWFC3/UVISImagingNoNoF845MPOS-TARGDITHER0.173LINE0.112falsetrue81.785423.884WFC3-UVIS-DITHER-BOX1falsePOS-TARGDITHER0.135LINEfalsetrue346.84WFC3-UVIS-DITHER-LINE-3PT2falsePOS-TARGDITHER0.145LINEfalsetrue246.84WFC3-UVIS-DITHER-LINE3falseUsing ephemeris for target 16454-01-NEPTUNEephemeris data for target 16454-01-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 20.214 to 22.089. ephemeris interval: 20.305 to 22.305Timing link suitability includes constraints ([02 After 01 by 0.1 to 0.1 days])The scheduling data was generated by CASM 28.2.CASM was run in Phase II mode.(Tic-Visit
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(Tic-Obset
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(Tic-Orbit
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)false10Using ephemeris for target 16454-02-NEPTUNEephemeris data for target 16454-02-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 20.214 to 22.089. ephemeris interval: 20.305 to 22.305Timing link suitability includes constraints ([02 After 01 by 0.1 to 0.1 days] [03 After 02 by 0.1 to 0.1 days])The scheduling data was generated by CASM 28.2.CASM was run in Phase II mode.(Tic-Visit
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(Tic-Obset
:proposal-id 16454
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(Tic-Orbit
:proposal-id 16454
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)false10Using ephemeris for target 16454-03-NEPTUNEephemeris data for target 16454-03-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 20.214 to 22.089. ephemeris interval: 20.305 to 22.305Timing link suitability includes constraints ([03 After 02 by 0.1 to 0.1 days] [04 After 03 by 0.1 to 0.1 days])The scheduling data was generated by CASM 28.2.CASM was run in Phase II mode.(Tic-Visit
:proposal-id 16454
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(Tic-Obset
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(Tic-Orbit
:proposal-id 16454
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)false10Using ephemeris for target 16454-04-NEPTUNEephemeris data for target 16454-04-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 20.214 to 22.089. ephemeris interval: 20.305 to 22.305Timing link suitability includes constraints ([04 After 03 by 0.1 to 0.1 days] [05 After 04 by 0.1 to 0.1 days])The scheduling data was generated by CASM 28.2.CASM was run in Phase II mode.(Tic-Visit
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(Tic-Obset
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(Tic-Orbit
:proposal-id 16454
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)false10Using ephemeris for target 16454-05-NEPTUNEephemeris data for target 16454-05-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 20.214 to 22.089. ephemeris interval: 20.305 to 22.305Timing link suitability includes constraints ([05 After 04 by 0.1 to 0.1 days] [06 After 05 by 0.5 to 4.0 days])The scheduling data was generated by CASM 28.2.CASM was run in Phase II mode.(Tic-Visit
:proposal-id 16454
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:trans-version "20200619"
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(Tic-Obset
:proposal-id 16454
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:pcs-mode "FGS"
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(Tic-Orbit
:proposal-id 16454
:visit-id "05"
:orbit-number 1
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:low-sky "N"
:pcs-visibility 3142
:pcs-gap 0
)false10Using ephemeris for target 16454-06-NEPTUNEephemeris data for target 16454-06-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 20.214 to 22.089. ephemeris interval: 20.305 to 22.305Timing link suitability includes constraints ([06 After 05 by 0.5 to 4.0 days] [07 After 06 by 0.1 to 0.1 days])The scheduling data was generated by CASM 28.2.CASM was run in Phase II mode.(Tic-Visit
:proposal-id 16454
:visit-id "06"
:proposal-version -1
:trans-version "20200619"
:date "08-Nov-2020 21:30:02.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
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:number-of-orbits 1
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:si-bright-earth-limb-angle 20.0
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(Tic-Obset
:proposal-id 16454
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)
(Tic-Orbit
:proposal-id 16454
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:low-sky "N"
:pcs-visibility 3142
:pcs-gap 0
)false10Using ephemeris for target 16454-07-NEPTUNEephemeris data for target 16454-07-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 20.214 to 22.089. ephemeris interval: 20.305 to 22.305Timing link suitability includes constraints ([07 After 06 by 0.1 to 0.1 days] [08 After 07 by 0.1 to 0.1 days])The scheduling data was generated by CASM 28.2.CASM was run in Phase II mode.(Tic-Visit
:proposal-id 16454
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:trans-version "20200619"
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:number-of-orbits 1
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(Tic-Obset
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)
(Tic-Orbit
:proposal-id 16454
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:low-sky "N"
:pcs-visibility 3142
:pcs-gap 0
)false10Using ephemeris for target 16454-08-NEPTUNEephemeris data for target 16454-08-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 20.214 to 22.089. ephemeris interval: 20.305 to 22.305Timing link suitability includes constraints ([08 After 07 by 0.1 to 0.1 days] [09 After 08 by 0.1 to 0.1 days])The scheduling data was generated by CASM 28.2.CASM was run in Phase II mode.(Tic-Visit
:proposal-id 16454
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:trans-version "20200619"
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:number-of-orbits 1
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:si-bright-earth-limb-angle 20.0
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(Tic-Obset
:proposal-id 16454
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)
(Tic-Orbit
:proposal-id 16454
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:low-sky "N"
:pcs-visibility 3142
:pcs-gap 0
)false10Using ephemeris for target 16454-09-NEPTUNEephemeris data for target 16454-09-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 20.214 to 22.089. ephemeris interval: 20.305 to 22.305Timing link suitability includes constraints ([09 After 08 by 0.1 to 0.1 days] [10 After 09 by 0.1 to 0.1 days])The scheduling data was generated by CASM 28.2.CASM was run in Phase II mode.(Tic-Visit
:proposal-id 16454
:visit-id "09"
:proposal-version -1
:trans-version "20200619"
:date "08-Nov-2020 21:30:12.0"
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:number-of-orbits 1
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:si-bright-earth-limb-angle 20.0
:data-volume 114416
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:coron NIL
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(Tic-Obset
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(Tic-Orbit
:proposal-id 16454
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)false10Using ephemeris for target 16454-10-NEPTUNEephemeris data for target 16454-10-NEPTUNE does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 20.214 to 22.089. ephemeris interval: 20.305 to 22.305Timing link suitability includes constraints ([10 After 09 by 0.1 to 0.1 days])The scheduling data was generated by CASM 28.2.CASM was run in Phase II mode.(Tic-Visit
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(Tic-Obset
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)
(Tic-Orbit
:proposal-id 16454
:visit-id "10"
:orbit-number 1
:pcs-time 393
:si-vis-utilization 2732
: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 3142
:pcs-gap 0
)false10