Kraken Mare through polarisers, Cassini looks for lake shine |
Kraken Mare through polarisers, Cassini looks for lake shine |
Mar 29 2009, 08:56 AM
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
The latest 'looking ahead' gives a nice description of the pi-transfer, introducing the curious concept of a 'rev' that is only half a revolution. It also contains this sentence:
"With Kraken Mare near the field of view, scientists can also use this effort to see how using polarization filters affects the appearance of large bodies of liquid methane on Titan." Titan followers here may remember why I'm excited about that. http://www.unmannedspaceflight.com/uploads...78901_thumb.jpg |
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Aug 27 2009, 11:01 AM
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
Is it finally time for a third post in this thread?
If I'm not mistaken this image is one of a pair taken with polarisers at 0 and 90 degrees: http://saturn.jpl.nasa.gov/multimedia/imag...3/W00059373.jpg I suspect that Kraken Mare is marginally visible between 4 and 5 o'clock in this view. Now the question is: how are the filters oriented with respect to the picture frame? If they're horizontal and vertical that would put the lake at about 45 degrees to both. If I'm way off with all this somebody please tell me quick! |
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