Enceladus August 11, 2008 encounter, Close-up observations of plume vents |
Enceladus August 11, 2008 encounter, Close-up observations of plume vents |
Aug 3 2008, 06:54 PM
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Member Group: Members Posts: 931 Joined: 4-September 06 From: Boston Member No.: 1102 |
Just 8 days until the next Enceladus encounter.
CICLOPS Rev 80 Looking Ahead will appear here soon. Cassini Enceladus 080EN Mission Description is here now. We get to fly through the south polar jets again. -Floyd [edit] Soon = somtime before encounter -------------------- |
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Aug 10 2008, 07:21 PM
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Yeah, those super-close images weren't originally on my page, because for some reason in Bjorn's database a bunch of the geometric data, including the range to target, was missing for that observation. (The range is what I use for the select query to get the best images.) Thanks to Holder for pointing out they were missing. I just went and checked the headers of the files and found that the geometric information is there, and it's different from what shows up on the Cassini raws website. My page has been re-updated with the geometric information. The resolution is about 5.5 meters per pixel after 2x2 binning, but there's also significant motion blur. I'm guessing the difference in the numbers may have to do with there being some slant angle to the Cassini observation, which isn't important if you're far from your target but if you're this close it means the range is longer than the range to nadir.
--Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Aug 11 2008, 01:16 AM
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#3
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IMG to PNG GOD Group: Moderator Posts: 2254 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
Yeah, those super-close images weren't originally on my page, because for some reason in Bjorn's database a bunch of the geometric data, including the range to target, was missing for that observation. In some cases geometric data is missing from the LBL and index files for super-close images for some reason. I've seen it happen for some of the Enceladus flybys, including (if memory serves) the very close nontargeted flyby in February 2005, some of the later targeted flybys and also the very close nontargeted Tethys flyby. Does anyone know if the ultra-close images to be obtained during the upcoming flyby are BOTSIMs? This is not mentioned in the flyby descriptions I've read (I haven't checked everything yet though). In any case this seems to me to be the most complicated Cassini flyby so far and one of the most exciting and interesting ones as well - good luck to everyone involved. |
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