Enceladus SAR, Iapetus and Rhea SAR too |
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Enceladus SAR, Iapetus and Rhea SAR too |
 Dec 2 2011, 02:44 AM
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#1
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Newbie  Group: Members Posts: 8 Joined: 29-August 11 Member No.: 6141  |
There's a news item on the Cassini website about the Nov. 6, 2011 flyby of Enceladus with synthetic aperture radar imaging, with a link to a video that shows the radar swath (overlaid on a non-radar image) and close-ups of two segments of the swath, as well as a link to one of the close-up segments.
http://saturn.jpl.nasa.gov/news/newsreleas...elease20111201/ |
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Dec 2 2011, 02:56 AM
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#2
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Senior Member Group: Members Posts: 1582 Joined: 14-October 05 From: Vermont Member No.: 530 |
Thanks for pointing out the video! I totally missed it when I skimmed the article earlier.
Direct link: http://saturn.jpl.nasa.gov/video/videodetails/?videoID=239 |
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Dec 2 2011, 09:49 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 |
Emily's blog says:
QUOTE Although Cassini has used its RADAR instrument to perform other sorts of observations on Saturn's smaller moons (things like scatterometry and radiometry), until last month it had never performed SAR imaging on any body except Titan. I sort of remember there was some (distant) SAR on Iapetus (or was it Rhea?) done previously. Am I imagining things? -------------------- |
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Dec 2 2011, 12:24 PM
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#4
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 Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
QUOTE (ugordan @ Dec 2 2011, 10:49 AM)  I sort of remember there was some (distant) SAR on Iapetus (or was it Rhea?) done previously. Am I imagining things? Absolutely. It was Iapetus in September 2006. Cassini made a short low-res swath of the leading hemisphere. |
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Dec 2 2011, 02:44 PM
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#5
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 Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Even NASA page is wrong ("NASA's Cassini spacecraft obtained the first synthetic-aperture radar views of Saturn's moon Enceladus on Nov. 6, 2011.")
Icy Moons SARs (already available at PDS): 253.2007 - Iapetus (CORADR143) 306.2009 - 3× Enceladus (CORADR207) 061.2010 - Rhea (CORADR214) -------------------- |
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Dec 2 2011, 04:02 PM
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#6
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Solar System Cartographer Group: Members Posts: 10146 Joined: 5-April 05 From: Canada Member No.: 227 |
Are there any images made from those observations? I don't recall seeing them.
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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Dec 2 2011, 04:17 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 |
I think I saw an image somewhere of Iapetus, but for the life of me I can't remember where. It showed that even though the dichotomy is present at optical wavelengths, at radar wavelengths nothing special is seen.
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Dec 2 2011, 04:31 PM
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#8
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
QUOTE (Phil Stooke @ Dec 2 2011, 05:02 PM) Are there any images made from those observations? I don't recall seeing them. Phil Iapetus is here Enceladus is here and Rhea is here. "I think I saw an image somewhere of Iapetus, but for the life of me I can't remember where. " I think, that SAR image of Iapetus was firstly released in special Iapetus CHARM. And even here at UMSF, all these images are somewhere (in some Piotr Masek's post). EDIT: Browse images for Enceladus and Rhea. -------------------- |
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Dec 2 2011, 04:45 PM
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#9
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 Member Group: Members Posts: 655 Joined: 22-January 06 Member No.: 655 |
Wow, that's quite something - 650 metres deep on a 500km diameter moon - equivalent if applied to Earth as a canyon over 16km deep...
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Dec 2 2011, 05:16 PM
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#10
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 Senior Member Group: Moderator Posts: 3231 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Blink between Iapetus SAR and Steve Albers' map: http://pirlwww.lpl.arizona.edu/~perry/RADA...s_SAR_blink.gif
Iapetus SAR: http://pirlwww.lpl.arizona.edu/~perry/RADA...R_simp_8ppd.png -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Dec 2 2011, 05:28 PM
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#11
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Solar System Cartographer Group: Members Posts: 10146 Joined: 5-April 05 From: Canada Member No.: 227 |
Now I remember! Too many things to remember these days...
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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