Philae landing on the nucleus of Comet 67P C-G |
Philae landing on the nucleus of Comet 67P C-G |
Sep 5 2016, 05:10 PM
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#1396
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
So it's really the Perihelion cliff!
And Philae was so small in previous images because we saw only one of the legs. -------------------- |
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Sep 5 2016, 05:10 PM
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#1397
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Senior Member Group: Members Posts: 1443 Joined: 26-July 08 Member No.: 4270 |
QUOTE One thing -- from the obvious orientation of the two visible legs, it looks like there should be a leg pointing almost directly at the observer's position. I don't see any signs of it, and yet I thought all three legs were seen in the CIVA pan. The one I can't see here would be the one that looked like it was pointing out at the sky, with no surface around it. There wasn't a leg pointing out toward the direction of the sky. There was a leg pointing at the ground (which is "behind" the lander in the OSIRIS image), a leg against one cliff/local horizon, and a leg against another cliff/local horizon. The missing leg in the OSIRIS image is behind the lander.I've made a quick context image for the lander's position. -------------------- -- Hungry4info (Sirius_Alpha)
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Sep 5 2016, 08:57 PM
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#1398
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Junior Member Group: Members Posts: 22 Joined: 13-November 15 Member No.: 7840 |
One thing -- from the obvious orientation of the two visible legs, it looks like there should be a leg pointing almost directly at the observer's position. I don't see any signs of it... I confirm, the legs are rotated 15-20 degrees to the observer .... probably a result of the commands sent to try to get a better orientation. this will make it a little more difficult to draw a precise map of the areas immediately close to philae |
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Sep 5 2016, 09:28 PM
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#1399
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Senior Member Group: Members Posts: 1443 Joined: 26-July 08 Member No.: 4270 |
A purely subjective point. I've seen quite a few people make a comment along the lines of "proof we ever existed." It's interesting that this particular image has evoked that kind of reaction. I guess it is unique in a way. It's not like the LRO images of the Luna/Surveyor landers or even Apollo descent stages, where you see them clearly on the surface and know they have been busy with their instruments and devices out, collecting data and returning it to Earth.
I guess this image is different in a way. A lander in a crevice in a sort of dark half-cave, on its side, propped up against a slab of ice. It does seem to have a more lonely "abandoned" feel to it that you don't get from images of other imaged landers (even those imaged from close-up like the Lunokhod or MER bases). -------------------- -- Hungry4info (Sirius_Alpha)
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Sep 5 2016, 11:19 PM
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#1400
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Member Group: Members Posts: 813 Joined: 29-December 05 From: NE Oh, USA Member No.: 627 |
This would be true of the other craft we have images of.... long done with their missions. But their is something about that little leg strung up straight up to our point of view.
Imagine the engineers who designed that. The technicians who crafted it. Lonely little craft in it's final harbor. Tears that we found you. Good night. |
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Sep 6 2016, 01:09 AM
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#1401
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Senior Member Group: Members Posts: 2090 Joined: 13-February 10 From: Ontario Member No.: 5221 |
If it's any consolation, being in such a sheltered location from further outbursts is probably a good thing for Philae in the long term; just a light cleaning before its ready for a museum a few centuries from now...
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Sep 6 2016, 05:58 AM
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#1402
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Senior Member Group: Members Posts: 2922 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
This comes from a tweet from HiRise with comment "we couldn't resist":
Edit : sorry, I can't neither remove the double stack not delete the whole post -------------------- |
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Sep 6 2016, 02:10 PM
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#1403
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Member Group: Members Posts: 559 Joined: 1-May 06 From: Scotland (Ecosse, Escocia) Member No.: 759 |
Living near Loch Ness as I do, I enjoyed your post, Climber.
However, I think there is more chance of seeing Philae from the shores of Loch Ness, than seeing the other... |
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Sep 7 2016, 12:26 AM
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#1404
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Member Group: Members Posts: 808 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
Here is a GIF of 3 Philae images
(1) the original from ESA (2) convolved image (3) convolved with adaptive histogram equalization I present it in a more 'spacecraft' orientation -------------------- CLA CLL
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Sep 7 2016, 08:41 AM
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#1405
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Junior Member Group: Members Posts: 22 Joined: 13-November 15 Member No.: 7840 |
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Sep 7 2016, 11:19 AM
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#1406
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Senior Member Group: Members Posts: 2430 Joined: 30-January 13 From: Penang, Malaysia. Member No.: 6853 |
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Sep 9 2016, 12:16 PM
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#1407
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Junior Member Group: Members Posts: 93 Joined: 21-January 13 Member No.: 6845 |
Here is my small contribution to the identification of the details of your photos CIVA in photos taken by Rosetta in orbit! Edit- I consider that philae can be slightly moved after the rotation of the "head" of 35 ° carried to term of his mission I printed it and showed it to the Cecilia. She was the first to spot the lander on the Osiris images. ;-) |
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Sep 10 2016, 10:07 AM
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#1408
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Junior Member Group: Members Posts: 22 Joined: 13-November 15 Member No.: 7840 |
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Sep 11 2016, 06:13 PM
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#1409
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Member Group: Members Posts: 242 Joined: 28-October 12 Member No.: 6732 |
CNES has a different interpretation of the "Philae found" image than ESA.
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Sep 11 2016, 07:50 PM
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#1410
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Senior Member Group: Members Posts: 1443 Joined: 26-July 08 Member No.: 4270 |
Yeah it looks like CNES's solution shows the "body" of the lander rotated a bit. I do vaguely recall that the lander was commanded to rotate (30 degrees?) after the science objectives were completed to facilitate solar panel illumination. It may therefore be "improper" to be trying to figure out which features in the Philae images correspond to structures seen in the OSIRIS imagery under the assumption that the CIVA camera is still in the position/orientation that it was when those images were taken.
-------------------- -- Hungry4info (Sirius_Alpha)
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