Phoenix - spring images, HiRISE views of Phoenix after the long, long winter |
Phoenix - spring images, HiRISE views of Phoenix after the long, long winter |
Oct 26 2009, 02:14 PM
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#1
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Solar System Cartographer Group: Members Posts: 10179 Joined: 5-April 05 From: Canada Member No.: 227 |
Doug just said in another thread that he was looking for Phoenix in the new images and couldn't find it. Well, I love a challenge. So here it is:
Close-up: (REMOVED - SEE LATER POST) Context: (REMOVED - SEE LATER POST) Note that map-projected HiRISE images at this latitude are in polar stereographic projection, not a cylindrical projection. North is at the left. You might not believe this, but by blinking layers like Clyde Tombaugh I think I can match numerous points, not just the hardware. EDIT: I was a bit off. Correct locations are shown below. 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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Apr 15 2010, 01:46 PM
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Senior Member Group: Members Posts: 1089 Joined: 19-February 05 From: Close to Meudon Observatory in France Member No.: 172 |
Thanks to you nice image processings, Hungry4info and centsworth_II , there are now several options that can be discussed to better understand the current state of the Phoenix s/c :
1. the dark color of the s/c itself : even though there is a low sunlight, it is no longer coloured white or gray (body) and blue or dark blue (solar panels) : (i) Is it covered now by dirt left by a mix of ice and dust and... what else ? (ii) Has the s/c completely collapsed under the heavy ice load (2.6 tons...) and was almost flattened to the ground ? (meaning a quasi "flat" shadow) ; (iii) is the body intact with only bent or collapsed parts : leg(s), solar panels... ? Then, there is a difficulty to differentiate between the colors created by the shadows and the colors showing real parts of the s/c itself... 2. the shift (move) of the center of the s/c : (i) has it moved when the ice buit up or sublimated (s/c pushed aside) or just "slided" on it ? (ii) has it tipped over ? (iii) is it tilted on one side ? => I'm now really waiting to see the next HiRise images with an higher Sun... |
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Apr 15 2010, 02:16 PM
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
(i) has it moved when the ice buit up or sublimated (s/c pushed aside) or just "slided" on it ? I've been pondering this possibility as well. From my perspective I don't see any "missing" shapes in Centsworth's comparison above (thank you for that). Another thing about the "weight" of the CO(2) on the panels. That would only be a problem if the ice falls like snow from above. If the CO(2) forms directly from the air like frost, then we'd have an even deposition of ice forming both on top of and under the panels. In that case the panels wouldn't be subjected to "weight" any more than a metal table dropped to the bottom of the ocean would collapse from the weight of the water above. -------------------- If Occam had heard my theory, things would be very different now.
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