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Dust Devils In Jezero Crater, single-point repository of imagery
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post Jun 19 2021, 12:05 AM
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Hey, all. At the suggestion of long-time member PDP8E this thread has been created for everybody to post their images and animations of dust devils observed by Perseverance. Please be sure to include the sols when taken and times as well if they're available to make this data (and your great work) as useful as possible for any researchers who may take an interest. Thanks! smile.gif

EDIT: I'll be moving several posts from the Perseverance threads over here to kick it off.


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post Jun 19 2021, 03:42 AM
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SOL 35 -- 1:20PM local
3 frame segment of a 360 degree quick peek (no DDs in the other frames)
Facing SW, the landing site is in the center, Kodiak is to the right.

Attached Image


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neo56
post Jun 19 2021, 09:52 AM
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A larger field of view including Kodiak hill showing the dust devil mentioned by Olivier:



Contrast increased:


And another dust devil, again on sol 114:



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PDP8E
post Jun 19 2021, 05:06 PM
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SOL 117
WOW -- No fancy detector required!
It is more of a GUST than a DD...

Attached Image


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tau
post Jun 23 2021, 07:26 PM
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Two dust devils on sol 120 in a difference image.
The right one (black here because negative) was photographed at 13:40:26 local mean solar time,
the left one (white because positive) at 13:49:45. Its continuation into the sky is faintly visible.
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HSchirmer
post Jun 26 2021, 10:41 PM
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Hmm, time to start naming the dust devils after the members of the band Kansas, perhaps after cities in Kansas, and crowd-sourcing a competition to see which Kansas grade school can count the most?

Dust In The Wind.
https://youtu.be/tH2w6Oxx0kQ
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post Jun 29 2021, 01:45 AM
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SOL 121 Dust Devil Watch
360 degree quick peek (3 frames each in 5 stances)
GIF
Attached Image


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post Jun 29 2021, 11:42 PM
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SOL 123 Dust Devil Watch
21 Frames -- stationary stance -- 1PM local -- 14 secs between images -- 4 minute span
GIF
Attached Image


... the detector still has issues with the DD parts in the Sky ...


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post Jun 30 2021, 02:24 AM
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SOL 127 Dust Devil Watch (not 128)
360 degree quick peek (3 frames each in 5 stances) -- 3:20 PM local
GIF
Attached Image


edit 06-30-2021 -- fixed SOL # from 128 tp 127 -- oops -- reloaded GIF


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post Jun 30 2021, 10:26 PM
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SOL 128 Dust Devil Watch
21 Frames -- stationary stance -- 11 AM local -- all quiet (only compression and sensor noise)
GIF
Attached Image


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Ryan Kinnett
post Jul 1 2021, 01:45 AM
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(I posted this initially to the EDL thread but can't seem to find it now, so here it is for posterity)

Perseverance recorded this DD during descent. Simeon Schmauss spotted this in LCAM footage and produced this stabilized and reprojected view, shown here at 20x real time. The DD is seen moving westward at roughly 8.5 m/s (20 mph) and was estimated to be about 25 m (75 ft) wide.

https://twitter.com/stim3on/status/1379575241970683908?s=20

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Ryan Kinnett
post Jul 1 2021, 02:11 AM
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QUOTE (Ryan Kinnett @ Jun 30 2021, 05:45 PM) *
Perseverance recorded this DD during descent. Simeon Schmauss spotted this in LCAM footage and produced this stabilized and reprojected view, shown here at 20x real time. The DD is seen moving westward at roughly 8.5 m/s (20 mph) and was estimated to be about 25 m (75 ft) wide.

https://twitter.com/stim3on/status/1379575241970683908?s=20


Note the dark streak seen in the crater floor between the prominent foreground peninsula and the background peninsula. That got me and Simeon looking at HiRISE views of this area to see if that might be a transient feature, maybe a DD track. Sure enough, that track was visible in the first HiRISE view after Perseverance's arrival but was not present just six months earlier. That track is ~34m wide.

Attached Image


Across this broader HiRISE swath you can see dozens or hundreds of similar transient streaks, some estimated to be ~80m wide, predominantly oriented east/west.

Attached Image


This place is a popular playground for these devils!
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PDP8E
post Jul 1 2021, 06:15 PM
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Hi Ryan,
Thanks for those DD maps!
And a personal thank you for the RoverPics website over on github. Great Job!
Karle


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post Jul 6 2021, 02:38 AM
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SOL 132 - Dust Devil Watch
360 degree quick peek (3 frames each in 5 stances) -- 2:30 PM local
Improved noise reduction
Only one DD found - pretty quiet
GIF
Attached Image


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PDP8E
post Jul 6 2021, 08:59 PM
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SOL 134 Dust Devil Watch
360 degree quick peek (3 frames each in 5 stances) -- 8:45 AM local (early...)
Improved noise reduction
All quiet ... The mid-morning sun angle and lighting is interesting
GIF
Attached Image


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