T58 (July 8, 2009 / Rev 114) |
T58 (July 8, 2009 / Rev 114) |
Jul 30 2009, 04:14 AM
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#16
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Member Group: Members Posts: 237 Joined: 22-December 07 From: Alice Springs, N.T. Australia Member No.: 3989 |
Based on the most recent CHARM presentations http://saturn.jpl.nasa.gov/video/products/...aProductsCharm/ Thanks for the link TR. The three presentations were all v interesting summaries (Spilker's, Cuzzi's and Turtle's) and I thought that the standard of graphics/presentation ranked with the best that I have ever seen from NASA. The Skeet shoot pics (p27 et seq - on Turtle's) seem a bit enhanced from earlier pics but I would have liked scale bars as on P26. It still blows me away that they (forgotten the smart guy's name whose original idea it was) slewed the spacecraft round so accurately that they got such crystal sharp images!! Cutting edge indeed. Well worth a look. |
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Jul 30 2009, 07:29 AM
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#17
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Member Group: Members Posts: 699 Joined: 1-April 08 From: Minnesota ! Member No.: 4081 |
[quote name='HughFromAlice' date='Jul 29 2009, 10:14 PM' post='144039']
Thanks for the link TR. The Skeet shoot pics (p27 et seq - on Turtle's) seem a bit enhanced from earlier pics but I would have liked scale bars as on P26. It still blows me away that they (forgotten the smart guy's name whose original idea it was) slewed the spacecraft round so accurately that they got such crystal sharp images!! You're welcome HFA! If you scroll down in the CHARM series you'll see the presentation on the Skeet shoot pics dated 11/25/2008. The names of the presenters are: Paul Helfenstein from the Imaging Team, John Spencer from the CIRS team and Sascha Kempf from the CDA team. I think the first person is the bloke who thought of and planned the skeet shoot imaging. |
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Jul 30 2009, 07:02 PM
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#18
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Member Group: Members Posts: 237 Joined: 22-December 07 From: Alice Springs, N.T. Australia Member No.: 3989 |
Paul Helfenstein is the bloke who thought of and planned the skeet shoot imaging. You've jogged my memory. It was!! http://www.planetary.org/blog/article/00001727/ |
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Jul 31 2009, 07:08 AM
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#19
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Member Group: Members Posts: 699 Joined: 1-April 08 From: Minnesota ! Member No.: 4081 |
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Guest_Sunspot_* |
Aug 22 2009, 08:12 PM
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#20
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Guests |
Interesting article from New Scientist :
Largest Lake on Titan varies in height by only 3 millimetres |
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Aug 22 2009, 10:26 PM
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#21
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
Sadly - or perhaps fortunately - Ontario is not the largest lake on Titan. Also, it may be flat at any one time, i.e. calm, but its level may vary seasonally by a lot more than millimeters. So, all in all, a pretty misleading headline. See:
http://adsabs.harvard.edu/abs/2009LPI....40.1990L for the proper information. |
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Aug 22 2009, 11:23 PM
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#22
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
That's by far the most concise & to the point abstract I've ever seen...
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Aug 23 2009, 03:41 AM
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#23
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Member Group: Members Posts: 699 Joined: 1-April 08 From: Minnesota ! Member No.: 4081 |
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Aug 23 2009, 04:08 AM
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#24
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
So, with lower density rock (ice), less viscous fluid (?), lower gravity, and thicker air....
How much farther could you skip a rock on Titan? The Mechanics of Rock Skipping -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Aug 23 2009, 04:33 AM
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#25
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Member Group: Members Posts: 699 Joined: 1-April 08 From: Minnesota ! Member No.: 4081 |
How much farther could you skip a rock on Titan?
Search me. However on earth the record to beat is 51 skips and 250 feet! http://www.msnbc.msn.com/id/21070570/ |
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Aug 23 2009, 11:30 AM
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#26
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Member Group: Members Posts: 131 Joined: 30-August 06 From: Moscow, Idaho Member No.: 1086 |
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Aug 23 2009, 04:40 PM
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#27
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Hai, ah so ne!
Planetary wonk, publishes major findings, condensed and striking! -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Aug 23 2009, 06:34 PM
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#28
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Member Group: Members Posts: 609 Joined: 23-February 07 From: Occasionally in Columbia, MD Member No.: 1764 |
How much farther could you skip a rock on Titan? This is clearly a question I should devote some effort towards considering, not least since I have instrumented skipping stones with accelerometers etc.... as described in my book 'Spinning Flight: Dynamics of Frisbees, Boomerangs, Samaras and Skipping Stones' Although there have been some neat analyses of the skipping process, the combined aerodynamic-gyrodynamic-hydrodynamic problem of modeling an end-to-end stone skip trajectory has not been satisfactorily modeled (e.g. as my book qualitatively notes, the pitch-up aerodynamic moment and the pitch-down moment usually generated by water impact at a positive angle of attack tend to make the spinning stone roll in opposite directions) Might be the viscosity and surface tension of Titan liquids affect the process in ways that can only really be studied experimentally.. |
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Sep 13 2009, 07:24 AM
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#29
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Member Group: Members Posts: 699 Joined: 1-April 08 From: Minnesota ! Member No.: 4081 |
The last Cassini web site Titan press image released was taken with the narrow-angle camera on July 9, 2009 (T58) shows a small part of Senkyo on the trailing hemisphere. This area had not been imaged in high resolution until the last several flybys. One can appreciate how recent imaging has filled in the Titan map gaps by looking at the Celestia Titan surface map (now several years old) and comparing it with the latest ISS Titan map. The graphic below depicts this.
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Aug 5 2010, 07:04 AM
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#30
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Member Group: Members Posts: 568 Joined: 20-April 05 From: Silesia Member No.: 299 |
-------------------- Free software for planetary science (including Cassini Image Viewer).
http://members.tripod.com/petermasek/marinerall.html |
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