Live Dust Devil? |
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Live Dust Devil? |
 Mar 25 2005, 10:17 PM
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#256
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Member  Group: Admin Posts: 468 Joined: 11-February 04 From: USA Member No.: 21  |
QUOTE (Chmee @ Mar 25 2005, 08:07 AM) It looks like the MER team may be trying to make movies of the dust devils. Today, they took quite a number of images of the same spot over Gustav: http://qt.exploratorium.edu/mars/spirit/pancam/2005-03-25/ I beleive they did this on 3/23 as well. Unfortunately, no dust devils today as far as I can see.  its only one of the many frames taken on sol 435, but this appears to have a dust devil: http://qt.exploratorium.edu/mars/spirit/pa...EBP2669L2M1.JPG |
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Mar 26 2005, 09:58 AM
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#257
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 Member Group: Members Posts: 118 Joined: 14-March 05 Member No.: 195 |
yah another one whoo hoo.
Now if sombody could tell them to quit using the L7 filter I could make the second frame of these look better.   scott |
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Mar 26 2005, 09:58 AM
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#258
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Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186 |
An attempt to make this dust devil from sol 435 better visible:
http://www.greuti.ch/spirit/2P164978242-sol435-L2.jpg The original pic is upmost -------------------- |
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Mar 28 2005, 01:39 PM
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#259
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Senior Member Group: Members Posts: 2998 Joined: 30-October 04 Member No.: 105 |
Dust devils appear to be popping up frequently. We see them easily now since the light-colored dust shows well against the dark ground, we see a wider expanse of dark ground because Spirit is at a higher elevation on the hill.
I wonder if the dust devils were active earlier but we couldn't see them because we were at a lower elevation, or if the dust devil activity has increased seasonally. I recall seeing the track of a dust devil in Bonneville crater in an orbital image last year. Tman's enhancement techniques work well. --Bill -------------------- |
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Mar 28 2005, 07:36 PM
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#260
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Member Group: Admin Posts: 468 Joined: 11-February 04 From: USA Member No.: 21 |
QUOTE (Bill Harris @ Mar 28 2005, 05:39 AM) I wonder if the dust devils were active earlier but we couldn't see them because we were at a lower elevation, or if the dust devil activity has increased seasonally. I recall seeing the track of a dust devil in Bonneville crater in an orbital image last year. Sure did, sometime between 30 March 2004 and 20 April 2004 one passed by Spirit when it was near to Bonneville crater creating tracks visible both from both the rover and from MOC. MOC View of Spirit's Trek to the Columbia Hills |
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Mar 28 2005, 10:26 PM
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#261
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Member Group: Admin Posts: 468 Joined: 11-February 04 From: USA Member No.: 21 |
Spirit Sol 438 brings us....yet another dust devil animation!
 4 frames, filters are L2/L7/L2/L7, times are 0, 37 seconds later, 74 seconds later, 111 seconds later Source images: http://nasa.exploratorium.edu/mars/spirit/...00P2669L2M1.JPG http://nasa.exploratorium.edu/mars/spirit/...00P2669L7M1.JPG http://nasa.exploratorium.edu/mars/spirit/...00P2669L2M1.JPG http://nasa.exploratorium.edu/mars/spirit/...00P2669L7M1.JPG |
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Mar 28 2005, 10:45 PM
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#262
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Member Group: Members Posts: 180 Joined: 31-January 05 From: Brittany (France) Member No.: 164 |
No shivers, while shooting a Martian Dust Devil! Thanks, Slinted...
-------------------- Erwann |
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Mar 29 2005, 06:21 AM
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#263
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Member Group: Members Posts: 118 Joined: 14-March 05 Member No.: 195 |
sweeeeet. This is getting fun.
mars bar for the nice ani-gif slinted.  may i have it to put in my collection? scott. |
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Apr 13 2005, 09:14 PM
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#264
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Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186 |
Another strong wind in Gusev? Could be this dust-like appearance in front of Grissom Hill real dust? And right above of the picture could be another dust devil.
http://qt.exploratorium.edu/mars/spirit/na...C2P0715L0M1.JPG -------------------- |
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Apr 14 2005, 07:39 AM
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#265
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Member Group: Members Posts: 118 Joined: 14-March 05 Member No.: 195 |
looks like a dust devil to me. If it is it's in 3d. not really though cause its soo far away.
scott |
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Apr 17 2005, 09:32 PM
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#266
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 Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
NavCam images taken on Sol456 show darkening of a long clear stripe in the plain.
Here the links to the animated gif showing variation and also to an RGB image where R-channel contain enhenced difference between the two.   The two images were taken only 5 minutes apart, so to me the only realistic explaination is the transit of a dust devil... any alternative? -------------------- I always think before posting! - Marco -
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Apr 17 2005, 11:37 PM
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#267
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 Martian Photographer Group: Members Posts: 352 Joined: 3-March 05 Member No.: 183 |
QUOTE (dilo @ Apr 17 2005, 09:32 PM) NavCam images taken on Sol456 show darkening of a long clear stripe in the plain. Here the links to the animated gif showing variation and also to an RGB image where R-channel contain enhenced difference between the two. The two images were taken only 5 minutes apart, so to me the only realistic explaination is the transit of a dust devil... any alternative? Some impressive dust devil must have come by between those images. It'd sure be nice to have pix of it! 
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Apr 18 2005, 05:44 AM
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#268
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
QUOTE (Deimos @ Apr 17 2005, 11:37 PM) Some impressive dust devil must have come by between those images. It'd sure be nice to have pix of it! So, you agree  ... It was big and also fast; unfortunately, looking to all images taken in the same day, none of them falls in the time frame between these two.  the two images are: 2N166841449ESFA9DWP1560L0M1 and 2N166841754ESFA9DWP1560L0M1).
-------------------- I always think before posting! - Marco -
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Apr 18 2005, 04:32 PM
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#269
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Member Group: Members Posts: 118 Joined: 14-March 05 Member No.: 195 |
QUOTE (dilo @ Apr 18 2005, 05:44 AM) QUOTE (Deimos @ Apr 17 2005, 11:37 PM) Some impressive dust devil must have come by between those images. It'd sure be nice to have pix of it! So, you agree ... It was big and also fast; unfortunately, looking to all images taken in the same day, none of them falls in the time frame between these two. the two images are: 2N166841449ESFA9DWP1560L0M1 and 2N166841754ESFA9DWP1560L0M1).wow bet that would of been a great one. lol I think i'd rather not know that a dustdevil went by than realize one went by an we missed it.  ignorance is bliss.scott |
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Apr 18 2005, 05:13 PM
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#270
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Martian Photographer Group: Members Posts: 352 Joined: 3-March 05 Member No.: 183 |
QUOTE (wyogold @ Apr 18 2005, 04:32 PM) wow bet that would of been a great one. lol I think i'd rather not know that a dustdevil went by than realize one went by an we missed it. ignorance is bliss.scott Sadly, the rovers don't have software for on board motion detection, nor are the cameras capable of fast frame rates. But maybe they'll figure out a way to get movies of dust devils even though they can't afford to waste downlink on repeated images of nothing happening. Don't give up hope. |
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