Rev 121 - Nov 11-30, 2009 - Rhea |
Rev 121 - Nov 11-30, 2009 - Rhea |
Nov 22 2009, 04:12 AM
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#1
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
The rev 121 Enceladus flyby is discussed in a different thread - moderator
November 21 images RGB[IR1,GRN,UV3] + CL1CL2 as luminance layer (only 60% opacity). Cassini raw images N0156887-90.jpg distance about 25,000 km. Colors adjusted. -Mike Full res TIFF here (1 Mb): http://www.flickr.com/photos/31678681@N07/4123921310/ -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Nov 22 2009, 04:51 AM
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#2
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
Rhea lineaments (RGB[RED,GRN,BL1] + CL1 CL2 luminosity layer ):
Full res TIFF on Flickr (700 kb): http://www.flickr.com/photos/31678681@N07/4123997298/ -Mike -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Nov 22 2009, 11:22 AM
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#3
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Global view, color balanced according to this calibrated view which shows almost the same view.
The equatorial dark stains are faintly visible above. Here's a narrow-angle segment of the equatorial markings centered around the two craters near image center above, contrast-enhanced IR3/GRN/UV3 color: -------------------- |
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Nov 22 2009, 11:30 AM
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#4
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Thanks for yet more wonders, Mike & Gordan. (Still overloaded, here!)
I never knew about Rhea's 'lineaments'; what the deuce? Are they analogous to Ganymedian "racetrack" features, albeit at a smaller scale? They're oddly straight. -------------------- 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 22 2009, 01:58 PM
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#5
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
Putting Gordan's [IR3,GRN,UV3] image with the the lineament feature [RED,GRN,BL1] image above you get a nice mosaic of the equatorial stains:
(Equatorial stains indicated below:) -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Nov 22 2009, 02:52 PM
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#6
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Member Group: Members Posts: 910 Joined: 4-September 06 From: Boston Member No.: 1102 |
Thanks for yet more wonders, Mike & Gordan. (Still overloaded, here!) I never knew about Rhea's 'lineaments'; what the deuce? Are they analogous to Ganymedian "racetrack" features, albeit at a smaller scale? They're oddly straight. There are two other threads that cover this information extensively Link Link ugordan is the acknowledged discover of the equatorial markings on Rhea for which he received the prestigious award from UMSF Link -------------------- |
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Nov 22 2009, 08:13 PM
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#7
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
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Nov 22 2009, 08:36 PM
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#8
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Ah--How did I forget that? Thanks, Floyd, and apologies, Gordan!
Was just rather taken aback by the appearance of the lineaments in Mike's image; they look like scratches on a dirty crystal ball! -------------------- 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 25 2009, 09:11 PM
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#9
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Member Group: Members Posts: 207 Joined: 6-March 07 From: houston, texas Member No.: 1828 |
Yep, the rhea equatorial deposits were also discovered independently by two other teams, including myself. Its really only a matter of time before these things are found out. Ive been doing some high res mapping and am working on some new products showing these things in much better detail. It was the subject of my DPS presentation in october as well, and are the subject of a recent blog on stereomoons.blogspot.com. the alignment indicates they are fallout from Rhea's ring onto the surface. cool huh? stay tuned!
paul -------------------- Dr. Paul Schenk, Lunar and Planetary Institute, Houston TX
http://stereomoons.blogspot.com; http://www.youtube.com/galsat400; http://www.lpi.usra.edu/science/schenk/ |
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Nov 25 2009, 10:34 PM
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#10
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
I've had a question right from almost the start of this thread, the same one I think that appears in post 2. The question was "What are the lineaments?" I thought I'd wait until the answer turned up but it hasn't. All the subsequent discussion has been about the equatorial dark marks - a great subject, I agree. I'm a big fan of rings around moons.
But what are the other lineaments in that image, the thin bright lines at many angles? Rays from impact craters? Scarps? They are very narrow but have an observable finite width in places. |
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Nov 26 2009, 12:00 AM
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#11
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Solar System Cartographer Group: Members Posts: 10153 Joined: 5-April 05 From: Canada Member No.: 227 |
Like the similar lines radiating from 'Cassandra' in the southern hemisphere of Dione, they are probably straight, narrow fractures exposing fresh ice along the faults. These on Rhea were already seen in Voyager images.
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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Nov 29 2009, 06:11 AM
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#12
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SewingMachine Group: Members Posts: 316 Joined: 27-September 05 From: Seattle Member No.: 510 |
Hello all...I've clearly missed a lot recently! Incredible stuff.
Better late to the party than never, so here's a mosaic of the tectonized terrain crudely reprojected to the perspective shown in W00061506. I've left out the two disconnected southern frames and the stereo images. -------------------- ...if you don't like my melody, i'll sing it in a major key, i'll sing it very happily. heavens! everybody's all aboard? let's take it back to that minor chord...
Exploitcorporations on Flickr (in progress) : https://www.flickr.com/photos/135024395@N07/ |
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Nov 29 2009, 02:21 PM
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#13
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Senior Member Group: Members Posts: 1421 Joined: 26-July 08 Member No.: 4270 |
Stunning amount of detail! Great work! Thank-you!
-------------------- -- Hungry4info (Sirius_Alpha)
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Sep 25 2010, 09:40 PM
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#14
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Member Group: Members Posts: 699 Joined: 1-April 08 From: Minnesota ! Member No.: 4081 |
Raw images from REV 121 of Titan and Rhea together taken on Nov 19th 2009 featured recently as Cassini browse image ‘Biggest Saturnian Moons’ http://photojournal.jpl.nasa.gov/catalog/PIA12724 provide a natural spectacle and opportunity for us fortunate photoshop users to work with.
Below shows the RGB of Titan. Motion occurred between shots so a cut and paste of Rhea from the browse image was used. 3D image is one of those eye-crossers again! |
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Sep 25 2010, 10:14 PM
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#15
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
And coincidentally, just a few days before the real raw data for that hits PDS...
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