Live Dust Devil? |
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Live Dust Devil? |
 Mar 12 2005, 10:39 PM
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#91
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Member  Group: Members Posts: 123 Joined: 21-February 05 Member No.: 175  |
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 Mar 12 2005, 11:12 PM
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#92
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 Member Group: Members Posts: 356 Joined: 12-March 05 Member No.: 190 |
Hello everybody. This is my first post here since I've just foud your site! It's great that there exists a place like this where the pseudoscience kooks aren't allowed to infiltrate with thier nonsense. I hope to contribute to what I see is already a fascinating and insightful amateur discussion!
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Mar 12 2005, 11:30 PM
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#93
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Member Group: Members Posts: 350 Joined: 20-June 04 From: Portland, Oregon, U.S.A. Member No.: 86 |
That 'Marsquatch' thing does look interesting, but then I realized it's been processed with some Photoshop filter or another ("Sharpen"?). You might as well be reprocessing film negatives to show fairies dancing around little girls..
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Mar 13 2005, 01:59 AM
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#94
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 Senior Member Group: Members Posts: 1887 Joined: 20-November 04 From: Iowa Member No.: 110 |
Back on thread.
Here is a before an after shot of the sundial.  Those images are useful for something after all 
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Mar 13 2005, 02:02 AM
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#95
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Member Group: Members Posts: 180 Joined: 31-January 05 From: Brittany (France) Member No.: 164 |
Below is linked a page from J.T ALU website, with fantastic images and movie of Earthian DD... I'm a little seasick, but what a movie: Jeff. T. Alu DD webpage
-------------------- Erwann |
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Mar 13 2005, 02:11 AM
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#96
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 Member Group: Members Posts: 813 Joined: 8-February 04 From: Arabia Terra Member No.: 12 |
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Mar 13 2005, 03:08 AM
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#97
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Member Group: Admin Posts: 468 Joined: 11-February 04 From: USA Member No.: 21 |
Thanks for the sundial images Alan. I think its very interesting to note the amount of material moved around (not only on the dial, but in the background as well) as early as Sol 416/417. The cleaning apparantly isn't just an 'event' that occured on Sol 421, along with the spotted dust devil. This time of year must just be a windy time at Gusev.
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Mar 13 2005, 04:28 AM
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#98
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 The Insider Group: Members Posts: 669 Joined: 3-May 04 Member No.: 73 |
Alan, the Sol 417 image of the sundial above is quite fascinating, especially the dust-free band around the sphere. Some nice science can be learned from that simple image! One can easily see wind coming from lower left on the sundial, and blowing away the dust from the sphere, affecting the areas only where windspeed is the highest...
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Mar 13 2005, 04:46 AM
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#99
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The Insider Group: Members Posts: 669 Joined: 3-May 04 Member No.: 73 |
QUOTE (dvandorn @ Mar 12 2005, 06:36 PM) I did give Jim O. the URL to this forum, and told him that while we could see the effects of wind in a lot of images from Sol 421 (including degradation of rover tracks and the cleaning of rover surfaces), Oh great... now I really have to watch what I say, or it'll wind up on the evening news...   QUOTE I rather specifically didn't post the URL to this forum on Usenet -- not that this isn't a publically accessible forum, I just didn't want to spur a flood of Usenet crazies into this nice, pleasant forum... Looks like someone else did post it though...  But in all honesty, this forum is just about tops -- actually, several research scientists from the rover team are members of this forum and have contributed here, and that says a lot. Kudos to Doug for his excellent moderation skills 
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Mar 13 2005, 04:56 AM
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#100
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Senior Member Group: Members Posts: 1887 Joined: 20-November 04 From: Iowa Member No.: 110 |
Pando, I noticed that the sundial looks even redder on 418. Then on sol 420 the navcan images of the sky looked cloudier.
http://marsrovers.jpl.nasa.gov/gallery/all...8P1584L0M1.HTML Did Spirit go through a dust storm starting on 417 (when the forward hazcam was messed up) that peaked on 420? |
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Mar 13 2005, 06:06 AM
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#101
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Member Group: Members Posts: 356 Joined: 12-March 05 Member No.: 190 |
I have a question. It's probably a tad offtopic but I dont want to start a whole new thread for it since I'm sure it will be answered in like, one post! What is this little brushy wheel thingy near the "elbow" of the rovers arm and what was it intended to brush? http://marsrovers.jpl.nasa.gov/gallery/all...HPP1110R0M1.JPG I've not seen any information on it and it's not on any diagrams I've seen....
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Mar 13 2005, 09:35 AM
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#102
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 Member Group: Members Posts: 133 Joined: 29-January 05 Member No.: 161 |
Alan's images from sol 416 and sol 417 appear to fix the date of the Dust Devil. By comparing images around those dates it should be possible to see other effects in the local regolith that indicate the maximum size of particles moved or lifted by the wind. This would enable an estimate of wind speed ...
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Mar 13 2005, 09:45 AM
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#103
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
QUOTE (Pando @ Mar 13 2005, 04:46 AM) Kudos to Doug for his excellent moderation skills Kudos to the forum members for not letting me need them Doug |
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Mar 13 2005, 09:54 AM
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#104
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 Member Group: Members Posts: 578 Joined: 5-November 04 From: Denmark Member No.: 107 |
QUOTE (deglr6328 @ Mar 13 2005, 06:06 AM) I have a question. It's probably a tad offtopic but I dont want to start a whole new thread for it since I'm sure it will be answered in like, one post! What is this little brushy wheel thingy near the "elbow" of the rovers arm and what was it intended to brush? http://marsrovers.jpl.nasa.gov/gallery/all...HPP1110R0M1.JPG I've not seen any information on it and it's not on any diagrams I've seen.... It is to clean the Rock Abrasion Tool
-------------------- "I want to make as many people as possible feel like they are part of this adventure. We are going to give everybody a sense of what exploring the surface of another world is really like"
- Steven Squyres |
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Mar 13 2005, 10:10 AM
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#105
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 Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
QUOTE (Pando @ Mar 13 2005, 04:46 AM) QUOTE (dvandorn @ Mar 12 2005, 06:36 PM) I did give Jim O. the URL to this forum, and told him that while we could see the effects of wind in a lot of images from Sol 421 (including degradation of rover tracks and the cleaning of rover surfaces), Oh great... now I really have to watch what I say, or it'll wind up on the evening news... QUOTE I rather specifically didn't post the URL to this forum on Usenet -- not that this isn't a publically accessible forum, I just didn't want to spur a flood of Usenet crazies into this nice, pleasant forum... Looks like someone else did post it though... But in all honesty, this forum is just about tops -- actually, several research scientists from the rover team are members of this forum and have contributed here, and that says a lot. Kudos to Doug for his excellent moderation skills I'll second that! Three cheers and a case of Mars Bars for Doug! -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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