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Post Block Island Meteor Studies (The Western Route), The 6th Leg in our Zig Zag Journey to Endeavour Crater
Tesheiner
post Nov 2 2009, 01:21 PM
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QUOTE (Tman @ Nov 2 2009, 01:48 PM) *
Finally Trinidad: https://qt.exploratorium.edu/mars/opportuni...OLP1882L0M1.JPG
Relatively shallow but also a rather destructive impact.


Thanks for the heads-up. Now I can make a second version of the mosaic taken during sol 2047.
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Floyd
post Nov 2 2009, 05:29 PM
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I thought they took a color Pancam panorama of Trinidad, did I miss something of have the images not come down?


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CryptoEngineer
post Nov 2 2009, 05:33 PM
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Interesting photo. I note that unlike many of the craters we've seen, it seems to disrupt the dunes; ejecta fragments are embedded in the surface of some of the surrounding ones.

This suggests a couple of things:

  • It's a relatively recent impact.
  • Confirms that the dunes have been stationary for a long time.
  • Some of the fragments embedded in the dunes appear to have been worn down level with the dune's surface, so erosion still occurs, but not erosion of the dunes.


ce
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fredk
post Nov 2 2009, 06:03 PM
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Stereo view of Trinidad:
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Tesheiner
post Nov 2 2009, 09:44 PM
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QUOTE (Floyd @ Nov 2 2009, 06:29 PM) *
I thought they took a color Pancam panorama of Trinidad, did I miss something of have the images not come down?

AFAIK, only the thumbnails were downlinked.
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Phil Stooke
post Nov 3 2009, 12:28 AM
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Taking a break from wrestling with Kaguya... I recently made a mosaic of HiRISE browse images of Opportunity's region, with a 1 km grid starting at Eagle crater. Here it is - 50% reduced from the original size - to help provide a sense of where we are and where we are going.

Phil

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... 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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ElkGroveDan
post Nov 3 2009, 12:34 AM
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Those dunes at the Southernmost edge of the image have got to be positively massive. Maybe someone with more patience than I can apply a separation vs. height formula to that area and come up with how tall they must be based on the conditions we've observed elsewhere in Meridiani (or else measuring the shadows might work I suppose)


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fredk
post Nov 3 2009, 03:54 PM
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The latest official route map labels the area around sol 2042-3 "Gravel Bank" instead of "Grand Bank". Could it be another naming change?
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Tesheiner
post Nov 3 2009, 08:12 PM
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That's a question for Tim53. smile.gif

Back to sol 2054, I can already see today's mobility data. If the data is accurate and the rock position as pointed by Tman is correct we might see it almost in the same line-of-sight as the crater.
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Waiting for the pictures...
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Tesheiner
post Nov 3 2009, 09:10 PM
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There it is!
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... and I'm having a bit of fun with Google Earth! Compare the view as seen by the navcam with the one using GE.
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fredk
post Nov 3 2009, 09:35 PM
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In these new pancams, "new island"/"shark" appears to be associated with many smaller rocks/cobbles surrounding it. This could turn out to be an interesting area. And according to the route map and Tman's location, one more 70 metre drive should pretty much get us there!
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SFJCody
post Nov 3 2009, 09:56 PM
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Maybe it's a chunk of sandstone ejecta thrown out of 'fresh crater'
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ustrax
post Nov 3 2009, 10:37 PM
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Wow! Great sight!
Shark Island...definitely! biggrin.gif
If this one is originating from the crater ahead, I'm curious to see the differences to the ones Oppy found so far.


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Stu
post Nov 3 2009, 10:59 PM
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Hmmm... fascinating...

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ngunn
post Nov 3 2009, 11:12 PM
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Indeed - and a great 3D there - 'depth' discernable almost out to the (close) horizon.

What is that white object to the right of Sharkey and a bit closer? Another 70 m drive would miss it so I may never know . . .
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