Rosetta - Post Separation Ops at Comet 67P C-G, November 14, 2014 - |
Rosetta - Post Separation Ops at Comet 67P C-G, November 14, 2014 - |
Sep 30 2016, 11:25 AM
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#361
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Member Group: Members Posts: 100 Joined: 25-April 08 From: near New York City, NY Member No.: 4103 |
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Sep 30 2016, 11:32 AM
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#362
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
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Sep 30 2016, 11:52 AM
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#363
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Major congratulations and thanks to the Rosetta team for executing and completing this incredibly audacious mission. What an amazing ride!
-------------------- 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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Sep 30 2016, 12:18 PM
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#364
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Holger Sierks just came down and showed us some images that are not on the Web as animated GIFs of the final images sent before touchdown. I snapped a bunch of pics with my phone as they animated. Sorry for the low quality. There will be many duplicates in here. Thought you folks would like to play with them.
https://planetary.s3.amazonaws.com/emily/Rosetta.rar -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Sep 30 2016, 12:42 PM
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#365
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Thank you Emily!
Here is the last image (distance 51m) from the OSIRIS camera after deconvolution. -------------------- |
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Sep 30 2016, 04:06 PM
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#366
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Senior Member Group: Members Posts: 2106 Joined: 13-February 10 From: Ontario Member No.: 5221 |
A poignant end; that last one reminds me of NEAR's last image, with the data drop-out as the signal was lost smearing the bottom.
A fantastic end to a fantastic mission, 12 years without touching anything solid, until now. Whether the spacecraft will ever be seen again, and in what condition, is a question for the ages... |
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Sep 30 2016, 04:17 PM
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#367
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Member Group: Members Posts: 121 Joined: 26-September 05 From: Philadelphia Member No.: 507 |
Hey do we know the lines and specks are cometary dust and not just some kind of image anomalies? If that is dust, this image is pretty exciting to just look at. Not to mention the radical floor and then side wall that just shoots up to the left (after rotation that is).
Cheers all. I've been surprised to drop by a couple of times and not see any attention here to the brand new OSIRIS images being posted by https://twitter.com/Rosetta_OSIRIS and at https://planetgate.mps.mpg.de/Image_of_the_...fD_archive.html Here's a rotated crop from the latest, "a dusty comet", taken 6/1/2016 from about 20km using the narrow angle camera. [attachment=39503:67p_a_du...r_R_crop.jpg] -------------------- |
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Sep 30 2016, 04:39 PM
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#368
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Member Group: Members Posts: 121 Joined: 26-September 05 From: Philadelphia Member No.: 507 |
I did this (just for fun not for science). Manually tried to enhance the details and reduce noise while retaining what i think is cometary dust.
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Sep 30 2016, 05:40 PM
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#369
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
"Hey do we know the lines and specks are cometary dust and not just some kind of image anomalies? If that is dust, this image is pretty exciting to just look at. "
Yes we do know it's dust. Check out this animated GIF showing that dust moving around. (Also we have the same at Comet Hartley-2) http://sci.esa.int/rosetta/56343-comet-67p...ty-environment/ 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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Sep 30 2016, 06:21 PM
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#370
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Junior Member Group: Members Posts: 78 Joined: 20-September 14 Member No.: 7261 |
last image (distance 51m) The distance for the picture has been revised and is currently estimated at 20 meters. http://blogs.esa.int/rosetta/2016/09/30/co...ent-image-51-m/ I'm not entirely sure if the caption below the picture has also been updated, given it cites a "scale" of 5 mm/pixel which for OSIRIS WAC would be the resolution at around 50m. |
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Sep 30 2016, 07:52 PM
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#371
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Junior Member Group: Members Posts: 80 Joined: 18-October 15 From: Russia Member No.: 7822 |
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Sep 30 2016, 08:35 PM
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#372
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
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Sep 30 2016, 09:23 PM
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#373
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Member Group: Members Posts: 934 Joined: 4-September 06 From: Boston Member No.: 1102 |
I'm assuming some of the fuzziness compared to other stunning images is the camera system was not meant to focus on nearby objects, but rather essentially infinity??
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Sep 30 2016, 09:30 PM
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#374
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Senior Member Group: Members Posts: 4256 Joined: 17-January 05 Member No.: 152 |
this needs to be removed , then sharpened What kind of low-pass are you doing? Ie is it somehow targeted at jpeg structure? If you're just doing a rolloff lowpass and then sharpening, you will have removed any residual real small-scale structure along with the artifacts. |
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Sep 30 2016, 10:48 PM
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#375
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Member Group: Members Posts: 447 Joined: 1-July 05 From: New York City Member No.: 424 |
I'm assuming some of the fuzziness compared to other stunning images is the camera system was not meant to focus on nearby objects, but rather essentially infinity?? The OSIRIS reference paper, posted here, says this about the wide angle camera: QUOTE The optical performance is maintained essentially unchanged from infinity down to almost 500 m, so that no refocusing system is required. On <ahem> April 1 of this year, the OSIRIS team posted an image of the principal investigator taken by the wide angle cameras ground reference unit at a distance of 15 meters: https://planetgate.mps.mpg.de/Image_of_the_...016-04-01a.html To my eye the test image looks less fuzzy than the actual final image, but the test image might not have been compressed, and of course the conditions and subject matter were different. Congratulations and thanks to the team, and to the people who wrote about the mission for us. This post has been edited by Tom Tamlyn: Sep 30 2016, 10:51 PM |
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