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Dust Storm
marsophile
post Oct 19 2018, 01:51 AM
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QUOTE (JRehling @ Oct 18 2018, 07:56 AM) *
In my many winters' experience with snow, and three recent experiences with forest fire ash, the deposition of a windborne, granular substance does not cover all surfaces equally. Maybe Oppy's solar panels accumulate half as much as nearby surface units, maybe twice as much. I don't know how we could know – unless and until Opportunity wakes up and sends us pictures.

The law of averages: an interval around the mean carries the most probability mass. It is true we cannot know in any absolute sense but we can maybe get a likely estimate that could inform the recovery strategy going forward.

With regard to CRISM on Winnemucca:
http://www.planetary.org/explore/space-top...nce-valley.html
QUOTE
Instead, the scientists are examining Winnemucca with ground imagery, remote sensing, and an orbital mineralogical detector.

I assumed the orbital mineralogical detector was CRISM. In any case, it can be imaged by HIRISE, and I think the bright backdrop might provide a convenient "canvas" for viewing the new dust deposit.
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James Sorenson
post Oct 19 2018, 05:33 AM
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QUOTE (JRehling @ Oct 18 2018, 06:56 AM) *
unless and until Opportunity wakes up and sends us pictures.


I think if that happens, a gust would have blown a vast majority of any fallout off of the panels since Oppy would have woken up and phoned home. We will never really know at leased for sure how much accumulation was really on them in that case or any case.

Oppy did take a pancam color panorama in the weeks on up to the end of science ops. So if the rover does wake up and starts taking pics around the area, change detection could be interesting. Not sure if even that would give an accurate fallout estimate, since winds could have also cleared the area.
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marsophile
post Oct 25 2018, 04:18 PM
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https://spacenews.com/nasa-to-soon-end-acti...th-opportunity/
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akuo
post Oct 30 2018, 08:17 AM
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QUOTE
After a review of the progress of the listening campaign, NASA will continue its current strategy for attempting to make contact with the Opportunity rover for the foreseeable future. Winds could increase in the next few months at Opportunity's location on Mars, resulting in dust being blown off the rover's solar panels. The agency will reassess the situation in the January 2019 time frame.

https://www.jpl.nasa.gov/news/news.php?feature=7227

Cheers to Nasa for continuing the effort!


--------------------
Antti Kuosmanen
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marsophile
post Nov 4 2018, 05:50 PM
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Are false locks less likely when COMM sessions are scheduled on a dedicated antenna, rather than in an MSPA group?
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djellison
post Nov 5 2018, 04:42 AM
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There's no difference.
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marsophile
post Yesterday, 12:17 AM
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https://mars.nasa.gov/mer/mission/status.html#opportunity

Estimated tau now at 0.8
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