New Iapetian image series |
New Iapetian image series |
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#1
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![]() Member ![]() ![]() ![]() Group: Members Posts: 288 Joined: 28-September 05 From: Orion arm Member No.: 516 ![]() |
Hi,
CASSINI has transmitted 184 pics (!) over the last days. Here five takeouts, 3-4x enlargement: Date: 2009-09-06 Distance: 2.228.548 km Filters: CL1 and CL2 Date: 2009-09-08 Distance: 3.215.284 km Filters: P120 and GRN Date: 2009-09-08 Distance: 3.216.610 km Filters: P60 and GRN Date: 2009-09-09 Distance: 3.390.271km Filters: P60 and GRN Date: 2009-09-09 Distance: 3.427.313 km Filters: P120 and GRN Maybe somebody is able to combine some of those images to show more details. Bye. |
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#2
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 ![]() |
Interesting. I would expect ice deposited as frost in a near vacuum to be very pure (hence bright), and in very small particles (hence high opposition surge) wherever it happened to be located. If Roncevaux is both less bright and shows less opposition surge than Enceladus I'd be inclined to attribute the differences to radiation damage rather than 'dirt' as such. That would be consistent with a very much lower deposition rate on Iapetus than on Enceladus - not unreasonable.
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