Rosetta - Post Separation Ops at Comet 67P C-G, November 14, 2014 - |
Rosetta - Post Separation Ops at Comet 67P C-G, November 14, 2014 - |
Nov 14 2014, 05:17 AM
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#1
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Senior Member Group: Members Posts: 2106 Joined: 13-February 10 From: Ontario Member No.: 5221 |
I think I heard it mentioned during the press conference today, (I can't find it now), about Rosetta itself possibly landing eventually, similar to what NEAR did at the end of the main mission at Eros? Since it's not like there's anywhere else to go with the remaining delta-v left by the end of 2015, and sunlight levels and activity starting to drop after perihelion, and the low gravity makes the difference between orbiting and 'landing' trivial. The whole thing would weigh a kilo or two, right?
Obviously there's a few more pressing concerns right now, but it's something to eventually think about. |
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Nov 24 2014, 03:14 PM
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#2
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Solar System Cartographer Group: Members Posts: 10226 Joined: 5-April 05 From: Canada Member No.: 227 |
The long wait for an OSIRIS color image may be over:
https://agu.confex.com/agu/fm14/meetingapp.cgi#Paper/22395 The AGU abstracts are online and full of good stuff, and a very small number of them contain images, including this one. 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 24 2014, 07:00 PM
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#3
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Member Group: Members Posts: 241 Joined: 22-August 05 From: Stockholm Sweden Member No.: 468 |
The long wait for an OSIRIS color image may be over: https://agu.confex.com/agu/fm14/meetingapp.cgi#Paper/22395 The AGU abstracts are online and full of good stuff, and a very small number of them contain images, including this one. Phil That is one very strange image indeed... the mottling is confined to a broad stripe of the image starting abruptly about 20% in from left and ending about 10% in from the right. It almost looks a little bit like it was added in post. (Scientific DRM?) The "non mottled" areas look much nicer... |
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Nov 25 2014, 04:23 AM
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#4
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Senior Member Group: Members Posts: 4256 Joined: 17-January 05 Member No.: 152 |
the mottling is confined to a broad stripe of the image starting abruptly about 20% in from left and ending about 10% in from the right. Very obvious if you extract the saturation channel and stretch: Very sharp boundary between mottled area and unmottled to the right. The boundary's clearly unrelated to anything on the comet. |
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Nov 25 2014, 08:37 AM
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#5
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Member Group: Members Posts: 241 Joined: 22-August 05 From: Stockholm Sweden Member No.: 468 |
Yes. And the mottling seems very regular. Like a Perlin noice function...
The parts outside the area are quite nice. One could perhaps work a little on the registration of the images to get less fringing. But you can clearly see the colour of the surface change on the different terrain types. (Especially if you remove the overall red tint) |
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Nov 25 2014, 08:56 AM
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#6
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Member Group: Members Posts: 378 Joined: 21-April 05 From: Portugal Member No.: 347 |
Looks like noise / low resolution data. Perhaps some channels are of much lower resolution.
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www.astrosurf.com/nunes |
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Nov 25 2014, 09:03 AM
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#7
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Thing is, looking at the rotational state in each of the rgb components, it's suggestive that the source frames cover the entire body, not a case of a colorized greyscale image at the center. Very odd.
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