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On to Santa Maria! |
 Nov 10 2010, 12:58 PM
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#61
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 Member  Group: Members Posts: 206 Joined: 15-August 07 From: Shrewsbury, Shropshire Member No.: 3233  |
QUOTE (nprev @ Nov 10 2010, 06:13 AM)  Always strikes me how often these small craters in Meridiani don't look like craters to me from Oppy's viewpoint. They often look like very conventional small eroded depressions & associated knolls that I wouldn't notice twice in many places on Earth. One wonders. It looks like a sink hole from limestone country to me. 
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Nov 10 2010, 02:53 PM
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#62
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 Member Group: Members Posts: 717 Joined: 3-December 04 From: Boulder, Colorado, USA Member No.: 117 |
Nah, sinkholes don't have raised rims.
John |
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Nov 10 2010, 03:07 PM
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#63
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Solar System Cartographer Group: Members Posts: 10255 Joined: 5-April 05 From: Canada Member No.: 227 |
I think if you look back at Apollo images of craters seen at the surface, except for the fresher ones they also look eroded, shallow, irregular etc. (having been pitted by small impacts and showered with ejecta from nearby impacts). These are craters, no question, partly filled with wind-blown material or with rims distorted by superposed drifts.
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 PDF: 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 10 2010, 07:08 PM
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#64
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Solar System Cartographer Group: Members Posts: 10255 Joined: 5-April 05 From: Canada Member No.: 227 |
They are doing a Phobos transit observation today - oops, no, looks like it was yesterday.
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 PDF: 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 10 2010, 08:58 PM
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#65
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Senior Member Group: Members Posts: 1075 Joined: 21-September 07 From: Québec, Canada Member No.: 3908 |
Images of Paramore double crater (taken on sol 2409) just in on Exploratorium. I made this panorama (my first!).
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Nov 10 2010, 09:31 PM
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#66
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Solar System Cartographer Group: Members Posts: 10255 Joined: 5-April 05 From: Canada Member No.: 227 |
Very nice job! It inspired me to make a version of it and then do a vertical stretch - the previous ones were looking more towards the west, this one looks south.
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 PDF: 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 10 2010, 09:51 PM
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#67
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 Merciless Robot Group: Admin Posts: 8789 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Oh, I don't doubt for a nanosecond that Intrepid & the other small features are craters, Phil. Their appearance does make me wonder how many small-scale unidentified impact features there are on the Earth, though. With our aggressive erosional processes it'd be all but impossible to identify such things consistently, but it's interesting to think about.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Nov 10 2010, 10:08 PM
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#68
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Junior Member Group: Members Posts: 71 Joined: 19-January 10 From: Grimsby, N.E. Lincs, UK Member No.: 5179 |
QUOTE (Phil Stooke @ Nov 10 2010, 09:31 PM) It inspired me to make a version of it and then do a vertical stretch - this one looks south. Phil - thank you for that. Just so I'm not too disorientated - what/where are those (hills?) in the top left? Neil |
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Nov 10 2010, 10:35 PM
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#69
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 Martian Photographer Group: Members Posts: 353 Joined: 3-March 05 Member No.: 183 |
Yesterday's Phobos transit (during my pre-lunch telecon, after Opportunity's UHF pass) was the second and last of the season. Preliminary indication is the images will be quite good when they finally make it down (possible annular shot AM 2410, good grazing sequence PM 2415).
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Nov 10 2010, 10:58 PM
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#70
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 Senior Member Group: Members Posts: 4260 Joined: 17-January 05 Member No.: 152 |
QUOTE (NW71 @ Nov 10 2010, 10:08 PM) what/where are those (hills?) in the top left? That'd be Iazu crater. |
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Nov 10 2010, 11:01 PM
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#71
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 Member Group: Members Posts: 813 Joined: 8-February 04 From: Arabia Terra Member No.: 12 |
QUOTE (nprev @ Nov 11 2010, 07:51 AM) Oh, I don't doubt for a nanosecond that Intrepid & the other small features are craters, Phil. Their appearance does make me wonder how many small-scale unidentified impact features there are on the Earth, though. Wouldn't objects small enough to make craters of that size decelerate to terminal velocity in Earth's atmosphere and not produce craters? |
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Nov 10 2010, 11:09 PM
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#72
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 Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
 Oh, wait, I realized where I could figure that out. It's Golden Hind. They took pics of Yankee Clipper but they're not on the ground yet. -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Nov 10 2010, 11:16 PM
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#73
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Member Group: Members Posts: 813 Joined: 8-February 04 From: Arabia Terra Member No.: 12 |
The terrain is giving me some amazing 2004 era deja vu.
 http://qt.exploratorium.edu/mars/opportuni...00P1803L0M1.JPG |
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Nov 11 2010, 02:26 AM
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#74
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 Member Group: Members Posts: 198 Joined: 2-March 05 From: Richmond, VA USA Member No.: 181 |
Deja vu or not I'll happily take it! It's smooth, safe, and speedy!
I hear you though, one could almost expect to see the lander in either GH or Intrepid  .-- Pertinax |
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Nov 11 2010, 12:59 PM
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#75
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 Member Group: Members Posts: 237 Joined: 22-December 07 From: Alice Springs, N.T. Australia Member No.: 3989 |
QUOTE (charborob @ Nov 11 2010, 06:28 AM) I made this panorama (my first!). Nice one! Look forward to you doing more :-) |
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