Cape York, Landfall! |
Cape York, Landfall! |
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Senior Member ![]() ![]() ![]() ![]() Group: Moderator Posts: 4279 Joined: 19-April 05 From: .br at .es Member No.: 253 ![]() |
It’s finally time for a new thread. THE thread, I would say.
It is now sol 2681 and after virtually one thousand sols, beginning on 1683 when Opportunity left Victoria for good, and also after more than 21km driving on these flat fields, this little rover and obviously the brave mission’s people behind, made landfall on Cape York. A bunch of pictures and thumbnails are already on the ground (should be public in an hour or so) and the very limited data we can gather for the time being are just enough to guess a drive of around 60m. I’ve prepared a new picture to use as a map to follow this part of the mission and which I will update, as usual, on the route map thread once more data are available. Here’s a copy of it. Use this thread for comments, discussions, mosaics, images result of activities at / after sol 2681 and keep using the Post Conjunction: Santa Maria to Cape York, The Journey to 'Spirit Point' thread for posts related with stuff from before sol 2681. |
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Guest_Bobby_* |
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#2
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Guests ![]() |
WOW is the best word to Describe what I'm seeing and good job everyone.
I have a few Questions? 1. I would like to know where the official Rim of Endevour Starts and when did we cross that point? Are there any overhead shots showing the rim as a circular pattern? There probably is an image somewhere in UMSF and I missed it. 2. With the current degrading of certain science tools on Oppy. Does it take roughly 2 weeks to examine any rock now? Thanks Bobby |
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#3
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Junior Member ![]() ![]() Group: Members Posts: 52 Joined: 1-March 11 From: Houston, USA Member No.: 5860 ![]() |
1. (snip) Are there any overhead shots showing the rim as a circular pattern? NASA posts a good context image here: http://marsrovers.jpl.nasa.gov/newsroom/pr.../20110608a.html 2. With the current degrading of certain science tools on Oppy. Does it take roughly 2 weeks to examine any rock now? The curium-244 used in the APXS has a half-life of 18.1 years, so integration times for it should not yet have doubled, everything else being equal. The Mossbauer, on the other hand, uses cobalt-57, which has a half life of 271.8 days. Since the date of launch eight years ago, that's 10.75 half-lives, reducing the source intensity by more than 1,722 times if my arithmetic is right, which I hope it's not. A measurement that took six hours might now take more than a terrestrial year, so they may be running it just long enough to get the bare minimum of a result above the background. |
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