EPOXI Mission News |
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EPOXI Mission News |
 Nov 4 2010, 04:08 PM
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#136
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 Member  Group: Members Posts: 808 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241  |
...of the small sample of rocks and comets we have visited , most (alot?) tend to exhibit this shape architecture -- is there a clue here?
-------------------- CLA CLL
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Nov 4 2010, 04:18 PM
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#137
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 Senior Member Group: Members Posts: 2492 Joined: 15-January 05 From: center Italy Member No.: 150 |
Attempt to make two stereo pairs from images #495378/385/389 (caution: very large baselines!)
Attached thumbnail(s)
-------------------- I always think before posting! - Marco -
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Nov 4 2010, 04:44 PM
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#138
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 Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Phenomenal!!! Late to the party as usual because of pain meds, but remarkable work as always, guys!
-------------------- 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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Nov 4 2010, 05:05 PM
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#139
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 Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
There's a directory full of images here:
http://epoxi.umd.edu/3gallery/ENCOUNTER/ It includes the five close-approach pics, plus some more distant views from the 24 hours before close approach. The pictures are all posted with fairly detailed metadata embedded within the pixels of the images themselves, including information on the stretch that was applied to them (the min and max original DN in the 16 bit image) as well as filter and exposure information. Most images were taken through a clear filter but some were taken through narrowband filters in emission lines of OH, CN, and C2, which are in ultraviolet and green wavelengths. Anybody out there planning to take a crack at some color combos? I may not be able to try until I get home after the afternoon briefing... -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Nov 4 2010, 05:23 PM
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#140
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 Member Group: Members Posts: 568 Joined: 20-April 05 From: Silesia Member No.: 299 |
Where are images taken by the High Resolution Instrument (HRI) ? I know that the instrument is out of focus, but it always HRI.
-------------------- Free software for planetary science (including Cassini Image Viewer).
http://members.tripod.com/petermasek/marinerall.html |
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Nov 4 2010, 05:34 PM
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#141
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 The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Dum-dum, dum-dum, dum-dum...
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Nov 4 2010, 05:41 PM
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#142
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Damn; where's the "like" button?
 Good one, Stu! -------------------- 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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Nov 4 2010, 05:46 PM
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#143
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
QUOTE (peter59 @ Nov 4 2010, 09:23 AM)  Where are images taken by the High Resolution Instrument (HRI) ? I know that the instrument is out of focus, but it always HRI. They weren't planning on releasing those today. The deconvolution process is now well-understood but it does require manual tuning, and they don't want to release non-deconvolved versions (not as JPEGs anyway). -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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| Guest_cassioli_* |
Nov 4 2010, 05:57 PM
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#144
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Guests |
"normalized" animation:
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Nov 4 2010, 06:20 PM
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#145
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Junior Member Group: Members Posts: 59 Joined: 12-November 09 Member No.: 5039 |
QUOTE (marsbug @ Nov 4 2010, 04:39 PM) These jets look very distinct, I wonder how well that gels withthe idea that cometary jets are the product of surface wide sublimation focused by topography? I recall that being the most favoured mechanism behind cometary jets, though I could be out of date or just plain misremembering. Come to think about it, that mechanism seems unlikely to be at work for long. Even if at the beginning evaporation does happen directly on the surface of the young comet, very soon the surface gets covered by mantle of non-sublimating dry dust. Then further evaporation proceeds slower, underneath this mantling layer. Resulting gas often doesn't escape uniformly - it finds weaker spots and forms fissures => we see jets! |
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| Guest_cassioli_* |
Nov 4 2010, 06:38 PM
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#146
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Guests |
Full flyby animation
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Nov 4 2010, 08:34 PM
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#147
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 Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
been watching the press event on NASA TV. two good questions by Emily!
I have lost the part about the engineering aspects of the flyby. what was the final distance? and does anybody know whether a transcript or podcast or recorded video of the event is available? |
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Nov 4 2010, 08:35 PM
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#148
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 Member Group: Members Posts: 115 Joined: 8-January 05 From: Austin | Texas Member No.: 138 |
QUOTE (Stu @ Nov 4 2010, 06:34 PM) Dum-dum, dum-dum, dum-dum... Lol, well done.
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Nov 4 2010, 09:00 PM
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#149
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Member Group: Members Posts: 568 Joined: 20-April 05 From: Silesia Member No.: 299 |
Enhanced version of opposite end of comet with tons of jets silhouetting night side
-------------------- Free software for planetary science (including Cassini Image Viewer).
http://members.tripod.com/petermasek/marinerall.html |
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Nov 4 2010, 09:35 PM
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#150
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Member Group: Members Posts: 568 Joined: 20-April 05 From: Silesia Member No.: 299 |
I found more radar data (October 24-27,29-31) and Hartley 2 model.
http://www.naic.edu/science/ao_hartley.html We can compare the model with reality, a perfect fit. -------------------- Free software for planetary science (including Cassini Image Viewer).
http://members.tripod.com/petermasek/marinerall.html |
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