Marathon Valley, Sol 4078-4481 (July 15, 2015 - September 1, 2016) |
Marathon Valley, Sol 4078-4481 (July 15, 2015 - September 1, 2016) |
Nov 10 2015, 06:45 AM
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#91
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Member Group: Members Posts: 691 Joined: 21-December 07 From: Clatskanie, Oregon Member No.: 3988 |
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Nov 10 2015, 07:30 AM
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#92
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Senior Member Group: Members Posts: 2087 Joined: 13-February 10 From: Ontario Member No.: 5221 |
Fantastic work James! Awe-inspiring....
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Nov 11 2015, 12:02 PM
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#93
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Member Group: Members Posts: 691 Joined: 21-December 07 From: Clatskanie, Oregon Member No.: 3988 |
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Nov 12 2015, 08:28 AM
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#94
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Senior Member Group: Members Posts: 1089 Joined: 19-February 05 From: Close to Meudon Observatory in France Member No.: 172 |
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Nov 18 2015, 12:39 PM
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#95
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Senior Member Group: Members Posts: 1074 Joined: 21-September 07 From: Québec, Canada Member No.: 3908 |
Opportunity moved on sol 4200. Notice the shadow of the rim on the crater floor on this image.
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Nov 18 2015, 05:12 PM
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#96
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Solar System Cartographer Group: Members Posts: 10173 Joined: 5-April 05 From: Canada Member No.: 227 |
Yes! I don't remember seeing a shadow before. Maybe there have been images which I just overlooked.
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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Nov 18 2015, 06:49 PM
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#97
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Senior Member Group: Members Posts: 4247 Joined: 17-January 05 Member No.: 152 |
There was sol 2847 with some lovely views such as this one, which shows an "opposition surge" at the anti-solar point:
http://mars.nasa.gov/mer/gallery/all/1/p/2...43P2445L2M1.JPG There were some lovely colour mosaics made, see the old thread starting around here. I agree the new 4200 navcams are stunning. And I suspect we can see the opposition surge again in this frame: http://mars.nasa.gov/mer/gallery/all/1/n/4...OZP1685R0M1.JPG though someone should check the azimuths. |
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Nov 18 2015, 10:36 PM
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#98
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Member Group: Members Posts: 866 Joined: 15-March 05 From: Santa Cruz, CA Member No.: 196 |
i really liked the ones in shadow from sol4200 but sol4201 are even better. ICE chokes horribly on the righthand R image for some reason, so here's anaglyph of the other two pairs
"opposition surge", so thats what its called, thanks.. i've noticed this interesting effect quite a bit carpooling when one can actually get a chance to stare at at landscapes on low-angle sunny mornings, its especially apparent in iceplant type vegetation, i thought the effect aside from shadow hiding was just a prismatic reflection in plant epidermal cells but perhaps thats implicit as an aspect of the wiki's very brief coherent backscatter explanation. |
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Nov 19 2015, 12:54 PM
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#99
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Senior Member Group: Moderator Posts: 2262 Joined: 9-February 04 From: Melbourne - Oz Member No.: 16 |
Speaking of shadows, note the one on the left here.
http://www.midnightplanets.com/web/MERB/im...ZP1211L0M1.html -------------------- |
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Nov 19 2015, 11:59 PM
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#100
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Senior Member Group: Admin Posts: 3108 Joined: 21-December 05 From: Canberra, Australia Member No.: 615 |
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Nov 20 2015, 12:35 AM
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#101
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Senior Member Group: Members Posts: 1641 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
"opposition surge", so thats what its called, thanks.. Also called heiligenschein when seen at a close distance. -------------------- Steve [ my home page and planetary maps page ]
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Nov 26 2015, 04:26 PM
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#102
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Member Group: Members Posts: 495 Joined: 12-February 12 Member No.: 6336 |
i've noticed this interesting effect quite a bit carpooling when one can actually get a chance to stare at at landscapes on low-angle sunny mornings, its especially apparent in iceplant type vegetation, i thought the effect aside from shadow hiding was just a prismatic reflection in plant epidermal cells but perhaps thats implicit as an aspect of the wiki's very brief coherent backscatter explanation. You're close, it's water drops or if chilly, could be ice crystals rather on the surface of the blades of same vegetation. A a german word, but yes it sound right "Heiligenschein" though I rather think of holy or saintly light, also that ring over the head in religious depictions. |
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Nov 27 2015, 12:46 AM
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#103
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Senior Member Group: Members Posts: 1074 Joined: 21-September 07 From: Québec, Canada Member No.: 3908 |
Sol 4209 pancam anaglyph:
Notice the dark streaks in the left center of the image. They were also visible on this image, taken on sol 4201. I wouldn't stick out my neck too much, but visually, they bear some similarity to RSLs (recurring slope lineae). |
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Nov 29 2015, 10:15 AM
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#104
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Member Group: Members Posts: 238 Joined: 15-January 13 Member No.: 6842 |
Notice the dark streaks in the left center of the image. They were also visible on this image, taken on sol 4201. I wouldn't stick out my neck too much, but visually, they bear some similarity to RSLs (recurring slope lineae). We've seen such streaks in many MSL photos. I'm more inclined to think that they are miniature "landslides" of the darker martian sand that sits underneath the lighter reddish coating of iron oxide dust. -------------------- Curiosity rover panoramas: http://www.facebook.com/CuriosityRoverPanoramas
My Photosynth panoramas: http://photosynth.net/userprofilepage.aspx...;content=Synths |
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Nov 29 2015, 03:47 PM
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#105
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Senior Member Group: Members Posts: 1074 Joined: 21-September 07 From: Québec, Canada Member No.: 3908 |
wildespace, it is very obvious, in your image, that the streak results from a "mini-landslide" of fine-grained material. On the other hand, in the Opportunity image, the streak seems to originate from the rock. There doesn't seem to be a source of fine-grained material nearby to account for it (not obvious to me, anyway). I hope we will get a closer look soon.
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