Where Is Spirit Right Now? |
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Where Is Spirit Right Now? |
 Aug 17 2005, 07:57 PM
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#76
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Solar System Cartographer  Group: Members Posts: 10151 Joined: 5-April 05 From: Canada Member No.: 227  |
I'm pondering the discrepancy between Ron Li's position for the rover and the positions shown on the JPL route maps. The problem is the difficulty of getting an unambiguous feature match between the two very different sets of images, surface and orbital. The JPL maps are basically done by a sort of 'dead reckoning' approach which can be put off the mark by wheel slipping etc. They need to be corrected from time to time by the OSU work.
Well, this forum would be no fun if we couldn't occasionally take a chance on a wild unsupportable statement... so I have somehow drifted to the conclusion that Ron Li is right, or almost right. I might be a short distance above (north of) his position. So I predict that the JPL map will be redrawn shortly to correct for this. And what about that new view? Amazing! This armchair Mars exploration is way better than real life. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Aug 18 2005, 04:10 PM
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#77
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 Senior Member Group: Members Posts: 2228 Joined: 1-December 04 From: Marble Falls, Texas, USA Member No.: 116 |
There is also a short "surprize" update from Steve Squyres...
"Just a quick one today. We had a great drive with Spirit on Sol 576, and we're now approaching the summit region of Husband Hill. What we've learned from the latest images is that the thing we've been calling Summit 1 -- which we had thought from orbital images was the lower of the two summits -- is actually the higher one. So we're bound for Summit 1 now, instead of Summit 2. Near as we can tell, we're only about six vertical meters below it, and the path from here to there does not seem to present any impassable barriers. " http://athena.cornell.edu/news/mubss/ -------------------- ...Tom
I'm not a Space Fan, I'm a Space Exploration Enthusiast. |
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Aug 23 2005, 07:36 AM
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#78
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 Member Group: Members Posts: 236 Joined: 21-June 05 Member No.: 417 |
Latest traverse map:
http://marsrovers.jpl.nasa.gov/mission/tm-...MERA_A578_3.jpg |
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Aug 23 2005, 07:43 AM
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#79
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Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186 |
Summit 2 seems to be canceled.
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Aug 23 2005, 07:47 AM
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#80
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Senior Member Group: Moderator Posts: 4279 Joined: 19-April 05 From: .br at .es Member No.: 253 |
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Aug 24 2005, 11:45 PM
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#81
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 Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
With the help of Malgar and starting from digital terrain models from USGS, I made some PovRay simulations in order to verify rover position.
Here a comparison between Sol582 panorama portions (from Tman) and correspondent DTM simulation:
Below the rover position (red point) which give best matching between simulation and the actual view; the two summits are in green:
This calculated position appear in good agreement with latest traverse map: route map -------------------- I always think before posting! - Marco -
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Aug 25 2005, 06:38 AM
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#82
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Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
oops, wrong thread!
-------------------- I always think before posting! - Marco -
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Aug 25 2005, 09:49 AM
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#83
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 Member Group: Members Posts: 562 Joined: 29-March 05 Member No.: 221 |
damn dilo, you're getting good. I can't wait to see when you drape the images over the models......
thanks for all the effort you put in it... it is very much appreciated. |
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