New Iapetian image series |
New Iapetian image series |
Sep 11 2006, 09:27 PM
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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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Sep 24 2006, 05:07 AM
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#2
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Member Group: Members Posts: 509 Joined: 2-July 05 From: Calgary, Alberta Member No.: 426 |
At the end of November, Cassini will be a bit over two million kilometres from Iapetus. That hardly even qualifies as a "distant encounter" -- it's really just plain "distant".
Nonetheless, looking at the Solar System Simulator for dates around November 25th, any images taken around this time will probably be nice to look at, because they should show a bit more of the trailing, light-coloured part of the Saturn-facing hemisphere, Roncevaux Terra, than we have seen before. (Of course, we've seen some of it relatively close-up in Saturnshine during the New Year's 2005 distant flyby.) Cassini will be near apastron then, so there should be a bit of free time for taking pictures of Iapetus. We haven't seen much of this part of Iapetus in previous Cassini images. My impression (correct me if I'm wrong) is that this is due to the geometry of Cassini's orbit around Saturn, up to the present time. Whenever Cassini is well placed to photograph the trailing side of Iapetus, it will normally also be very close to Saturn, which means that other things would naturally take priority over getting fuzzy pictures of a moon three million kilometres away. |
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Sep 24 2006, 05:27 AM
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#3
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Member Group: Members Posts: 159 Joined: 4-March 06 Member No.: 694 |
I just used the Solay System simulator and I have the following:
Date: November 27, 2006 Time: 00 hours (UT) Distance: 2.008 million km A full disk view of the Saturn facing hemisphere of Iapetus at 12km/pxl I'm sure with multiple images and super ehancement, we can fill in a imaging gap of Iapetus in the high northern latitudes at better than the 9km/pxl that Voyager 2 achived in 1981. -------------------- I call heaven and earth to witness against you this day, that I have set before thee life and death, the blessing and the curse; therefore choose life, that thou mayest live, thou and thy seed.
- Opening line from episode 13 of "Cosmos" |
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Sep 24 2006, 05:54 PM
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#4
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Member Group: Members Posts: 288 Joined: 28-September 05 From: Orion arm Member No.: 516 |
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Sep 25 2006, 04:59 PM
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#5
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Member Group: Members Posts: 288 Joined: 28-September 05 From: Orion arm Member No.: 516 |
Hi again,
new release in the NASA/JPL image gallery - 'Duotone Moon': Date: 2006-09-06 Distance: ~2.2 mio km Resolution: 13 km/pxl Bye. |
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