Rev 141 - Nov 20-Dec 10, 2010 - Hyperion and Enceladus E12 |
Rev 141 - Nov 20-Dec 10, 2010 - Hyperion and Enceladus E12 |
Nov 30 2010, 03:28 AM
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#16
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Member Group: Members Posts: 754 Joined: 9-February 07 Member No.: 1700 |
Re: john's post about the distinction between predictability and chaos:
I'm reminded of one reason I'm so fascinated with astronomy and the science of not-yet-fully-understood objects like the Saturnian moons. As a music student, I found the concept of ''constrained random fields'' in orchestral instructions very interesting and it became a tool I continue to use in my compositions. A piece of music can progress along a ''predictable'' course, then have moments of chaos. An educated ear might be able to ascertain the method employed in a chaotic passage of music, and thus find it ''predictable''. Similarly, thanks to Cassini and their wonderful team, we might ascertain the chaotic aspects of Hyperion's orbit. However, I doubt we'll ever be able to predict Earth's weather. |
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Nov 30 2010, 04:20 PM
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#17
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Lord Of The Uranian Rings Group: Members Posts: 798 Joined: 18-July 05 From: Plymouth, UK Member No.: 437 |
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Nov 30 2010, 05:26 PM
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#18
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Senior Member Group: Members Posts: 1420 Joined: 26-July 08 Member No.: 4270 |
I keep getting an error.
This link works, however. -------------------- -- Hungry4info (Sirius_Alpha)
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Nov 30 2010, 06:15 PM
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#19
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Member Group: Members Posts: 555 Joined: 27-September 10 Member No.: 5458 |
Its a little rough but I like it just as well . Thanks for animating this. I was really curious how it would look.
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Nov 30 2010, 06:21 PM
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#20
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Junior Member Group: Members Posts: 74 Joined: 9-October 10 From: Victoria, BC Member No.: 5483 |
These Hyperion pics are awesome! The movie's very cool too.
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Dec 1 2010, 01:24 AM
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#21
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Member Group: Members Posts: 166 Joined: 20-September 05 From: North Texas Member No.: 503 |
I was really curious how it would look. What I am really curious about is what a lander on Hyperion would see. With that complicated, tumbling, chaotic rotation, the view from the Hyperian surface, of both Saturn and Titan rising and setting at different angles and varying times of "day" must be a most unusual experience. David |
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Dec 1 2010, 06:00 PM
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#22
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Member Group: Members Posts: 568 Joined: 20-April 05 From: Silesia Member No.: 299 |
A surprisingly strong and well defined jets. Especially this stream to the right.
http://saturn.jpl.nasa.gov/multimedia/imag...5/N00165288.jpg -------------------- Free software for planetary science (including Cassini Image Viewer).
http://members.tripod.com/petermasek/marinerall.html |
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Dec 1 2010, 08:13 PM
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#23
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Member Group: Members Posts: 796 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
Quick false color image (filters IR2, GRN, UV3) of Enceladus jets from yesterday's flyby.
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Dec 1 2010, 10:26 PM
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#24
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
Superb! It's amazing how adding the colour dimension, even if it's not real as-you-would-see-it colour, still adds 'reality' to the picture. (I think you've also cleverly smoothed out the greyscale steps a bit, but I'm not sure, and I don't need to know anyway.)
EDIT: Oh, and the dark limb of Enceladus is clearly visible all the way round to the bottom left of your version. Well picked out. |
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Dec 2 2010, 01:04 AM
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#25
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Junior Member Group: Members Posts: 74 Joined: 9-October 10 From: Victoria, BC Member No.: 5483 |
Aesthetically speaking at least, this is a particularly gorgeous image IMO:
http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=230048 There's about 25 of those plume images on the latest raw images index, I wonder if they'd be animatable so we can see changes in the plumes? |
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Dec 2 2010, 01:07 AM
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#26
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Junior Member Group: Members Posts: 74 Joined: 9-October 10 From: Victoria, BC Member No.: 5483 |
Also, were the Hyperion images the result of a targeted flyby of that moon, or was this a non-targeted flyby in which Cassini opportunistically imaged it because the geometry happened to be good at the time? (I'm suspecting it was targeted, since there's rather a lot of Hyperion images on the site!).
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Dec 2 2010, 01:18 AM
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#27
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Also, were the Hyperion images the result of a targeted flyby of that moon http://www.planetary.org/explore/topics/ca.../tour.html#2010 Sun, Nov 28, 2010 2010-332T03:29Nontargeted flyby of Hyperion (141H) Inbound 71756.3 km flyby, speed = 4.9 km/s, phase = 73° Thanks Emily |
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Dec 2 2010, 01:26 AM
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#28
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Junior Member Group: Members Posts: 74 Joined: 9-October 10 From: Victoria, BC Member No.: 5483 |
Ah! That's a stupendously handy reference - thanks!
(BTW, what's up with the UV1 filter on wheel 2? The images of Hyperion taken through that have lots of white speckles on them) |
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Dec 2 2010, 01:31 AM
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#29
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Could be that it's a very 'dark' filter (i.e. it's bandpass is either narrow, or well outside the best efficiency of the ccd, or both) and thus requires long exposure times and thus the raw unprocessed imagery is prone to noise.
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Dec 2 2010, 04:29 AM
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#30
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Junior Member Group: Members Posts: 74 Joined: 9-October 10 From: Victoria, BC Member No.: 5483 |
Did you put that together? I'd like to mention/link to it on my blog if I could. |
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