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Unmanned Spaceflight.com > Outer Solar System > Saturn > Cassini Huygens > Cassini's ongoing mission and raw imagesRev 53 Observations including Epimetheus |
 Nov 22 2007, 12:02 PM
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 Member  Group: Members Posts: 655 Joined: 22-January 06 Member No.: 655  |
Close encounter of the third (of December) kind approaching fast. There seems to have been little anticipation so far for this flyby of Epimetheus (compared to say Hyperion or Phoebe), although at ~9000km, it will be the closest 'rock' flyby in the whole of the prime mission.
I understand that approach is from the nightside, phase angle is very high at C/A (139 degrees) and spacecraft speed is ~22km/second - these all presumably hamper the usual suite of investigations. Having said that, does anybody here have any detail regarding ISS observations an hour or so either side of C/A? Jase |
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Dec 4 2007, 08:52 PM
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Solar System Cartographer Group: Members Posts: 10265 Joined: 5-April 05 From: Canada Member No.: 227 |
No, it's not an illusion, this is a big crater.
Here is a mosaic of Voyager images of Epimetheus, projected onto a sphere and viewed from the south pole (azimuthal equidistant projection):
It shows the crater as a shadowed area (it was over the limb in Voyager views, not really full of shadow). Rotate clockwise 120 degrees to fit the new image. 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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jasedm Rev 53 Observations including Epimetheus Nov 22 2007, 12:02 PM
volcanopele Actually, there was an accidental flyby of Polydeu... Nov 22 2007, 06:45 PM volcanopele The Looking Ahead article for Rev53 has just been ... Nov 27 2007, 11:03 PM jasedm Thanks VP. I suppose the risk of sun damage to the... Nov 28 2007, 09:19 PM Ian R A very rough and ready colour composite:
Dec 4 2007, 04:24 PM Ian R A stacked and cleaned-up version:
Dec 4 2007, 05:04 PM Phil Stooke And my version of the above, processed to show det... Dec 4 2007, 05:10 PM
tedstryk The grooves of Phobos and the dust of Deimos. I c... Dec 4 2007, 06:02 PM ngunn Very nice. Are we seeing 3 distinct shades of grey... Dec 4 2007, 05:13 PM ugordan R+B color and greatly enhanced:
IR1+GRN+UV3 gre... Dec 4 2007, 05:43 PM MarcF Really Nice !!
Is it an illusion or is thi... Dec 4 2007, 08:33 PM volcanopele Very cool stuff. The depression with a central pe... Dec 4 2007, 08:52 PM MarcF OK, thanks a lot Jason and Phil. Following your Vo... Dec 4 2007, 09:43 PM Exploitcorporations Here's another handy misshapen-lump-'o-ice... Dec 4 2007, 09:52 PM MarcF Great Exploitcorporations,
Finally, I'm not q... Dec 4 2007, 10:07 PM Phil Stooke MarcF - no, it's more like this:
Phil Dec 4 2007, 10:11 PM volcanopele Not bad, though I would make one correction (I thi... Dec 4 2007, 10:11 PM Exploitcorporations Thanks! Those two craters were confusing. Dec 4 2007, 10:15 PM MarcF Yes Phil, I realized (a little bit too late) that ... Dec 4 2007, 10:20 PM Stu Hmmm... looks a bit like Hyperion if you do a bit ... Dec 4 2007, 11:47 PM CAP-Team QUOTE (Stu @ Dec 5 2007, 12:47 AM) Hmmm..... Dec 5 2007, 09:00 AM alan What is the dark arc in the 11 Nov 1980 image in E... Dec 5 2007, 12:52 AM nprev IIRC, that's a ring shadow. Saturn was still p... Dec 5 2007, 01:31 AM belleraphon1 Yes, the arc is a ring shadow...
Agree with npre... Dec 5 2007, 02:00 AM n1ckdrake Here's my attempt at cleaning it up.
Dec 5 2007, 11:56 AM volcanopele And now for the image that has been my desktop bac... Jan 11 2008, 04:37 PM ugordan Ahh, it's always nice to see color views produ... Jan 11 2008, 04:42 PM Phil Stooke That is beautiful!
Phil Jan 11 2008, 06:13 PM stevesliva I thought you liked spheres, Phil? Jan 11 2008, 09:25 PM Phil Stooke Admittedly a featureless sphere would be more to m... Jan 12 2008, 04:50 AM volcanopele Featureless? No, No. The perfect world would have... Jan 12 2008, 05:55 AM MarcF Could this mean that Iapetus is close to a perfect... Jan 12 2008, 10:20 AM |
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