Rev 155 - Oct 10-28, 2011 - Enceladus E15 |
Unmanned Spaceflight.com > Outer Solar System > Saturn > Cassini Huygens > Cassini's ongoing mission and raw images  |
Rev 155 - Oct 10-28, 2011 - Enceladus E15 |
 Oct 19 2011, 05:56 PM
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#1
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 Senior Member  Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523  |
First frames are down. A very rough, 4-frame clear filter NAC mosaic from 25-ish thousand km away:
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Oct 19 2011, 06:02 PM
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#2
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
... and I take it these are the stars of Orion's Belt:
http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=246210 -------------------- |
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Oct 19 2011, 06:52 PM
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#3
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Junior Member Group: Members Posts: 94 Joined: 15-October 09 Member No.: 4979 |
QUOTE (ugordan @ Oct 19 2011, 02:02 PM)  ... and I take it these are the stars of Orion's Belt: http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=246210 Hmmm, I doubt it; Alnilam (the middle star) doesn't have a companion star like the one in the image. Of course, I could be mistaking a CR hit for a star... |
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Oct 19 2011, 07:15 PM
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#4
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Wow, check out this crack-like feature: http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=246215
Is that the "Isbanir Fossa" feature on the Enceladus map? Looks really conspicuous in this geometry and lighting angle. Edit: here it is, rotated so north is roughly up and contrast-enhanced:
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Oct 19 2011, 08:36 PM
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#5
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 The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Oh, great. Someone broke Enceladus...
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Oct 19 2011, 09:12 PM
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#6
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 Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
Interesting. Two older cracks or grooves at right angles to that dark line appear to have beeen dislocated by the same big horizontal shear along it. However I can't see any 'sheared' craters, though some craters overprint the old grooves. I conclude that this crack has been active in two separate episodes. There was shear(strike) displacement along it at an early epoch after which it became quiescent while most of the craters formed. Recently the 'old line of weakness' has become active again, this time creating a small vertical step in the topography highlighted in this image.
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Oct 19 2011, 09:44 PM
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#7
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Member Group: Members Posts: 241 Joined: 16-May 06 From: Geneva, Switzerland Member No.: 773 |
Isbanir Fossa has been quite well imaged 30 years ago by Voyager 2:
http://upload.wikimedia.org/wikipedia/en/7...banir_Fossa.jpg Anyway, it's nice to have this amazing new perspective of this region of Enceladus by Cassini ! Marc. |
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Oct 20 2011, 12:10 AM
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#8
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Solar System Cartographer Group: Members Posts: 10146 Joined: 5-April 05 From: Canada Member No.: 227 |
A little bit of reconstruction along the fault... make of it what you will...
Phil
-------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke 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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Oct 26 2011, 08:17 PM
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#9
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Junior Member Group: Members Posts: 33 Joined: 25-March 10 Member No.: 5281 |
QUOTE (ugordan @ Oct 19 2011, 10:02 AM) ... and I take it these are the stars of Orion's Belt: http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=246210 Yes, the observation (for UVIS) specifically looked at epsilon Ori and zeta Ori |
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