Deep Impact Realtime Thread |
Deep Impact Realtime Thread |
Jul 4 2005, 01:55 PM
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#61
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Member Group: Members Posts: 753 Joined: 23-October 04 From: Greensboro, NC USA Member No.: 103 |
I heard the rep from ESA say that Rosetta was also watching the impact so they could fine-tune their comet encounter 10 years from now.
The untold story: Rosetta actually impacted Tempel 1 last night, too...but it is going to take ESA 10 years to release the images! -------------------- Jonathan Ward
Manning the LCC at http://www.apollolaunchcontrol.com |
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Jul 4 2005, 03:30 PM
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#62
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Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186 |
There is an QT movie that shows most approach so far: http://www.nasa.gov/mission_pages/deepimpa...a/pia02125.html
But it's diificult to compare the surface of comet when final approach comes close. I treid to make a frame set that shows marks from frame to frame. In fact there are two main sequences that fit and two frames which do not. The order is the same as in the movie. http://www.greuti.ch/deepimpact/Tempel1_ap...ch_impactor.jpg -------------------- |
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Jul 4 2005, 03:35 PM
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#63
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
It may be that it started to tumble / wobble with impacting in the last few seconsd perhaps?
Doug |
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Jul 4 2005, 03:45 PM
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#64
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Member Group: Members Posts: 249 Joined: 11-June 05 From: Finland (62°14′N 25°44′E) Member No.: 408 |
The hubble image posted earlier has been updated with an image taken in 7:20 UT, where the debris cloud has expanded much larger:
http://hubblesite.org/newscenter/newsdesk/...leases/2005/17/ -------------------- The universe is not only stranger than we imagine, it is stranger than we can imagine.
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Jul 4 2005, 03:47 PM
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#65
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Member Group: Members Posts: 249 Joined: 11-June 05 From: Finland (62°14′N 25°44′E) Member No.: 408 |
QUOTE (djellison @ Jul 4 2005, 06:35 PM) It may be that it started to tumble / wobble with impacting in the last few seconsd perhaps? It may be possible. I got the impression that it was bombarded pretty heavily before the impact. -------------------- The universe is not only stranger than we imagine, it is stranger than we can imagine.
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Jul 4 2005, 03:52 PM
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#66
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Senior Member Group: Moderator Posts: 3233 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
QUOTE (Tman @ Jul 4 2005, 08:30 AM) There is an QT movie that shows most approach so far: http://www.nasa.gov/mission_pages/deepimpa...a/pia02125.html But it's diificult to compare the surface of comet when final approach comes close. I treid to make a frame set that shows marks from frame to frame. In fact there are two main sequences that fit and two frames which do not. The order is the same as in the movie. http://www.greuti.ch/deepimpact/Tempel1_ap...ch_impactor.jpg WOW, thanks for that sheet correlating features. I'm still trying to rap my head around this topography. They are definitely not craters. Given the scarps nature (with circular extentions), the seem most consistent with sapping, which makes perfect sense for a comet if these are the sites were jets form. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Jul 4 2005, 04:04 PM
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#67
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Senior Member Group: Moderator Posts: 3233 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
http://pirlwww.lpl.arizona.edu/~perry/images/impact_site.jpg
I want to thank tman for his work on trying to track the motion of the impactor. I have taken two of his frames, one from early on and the second to last frame, to show the motion. I have identified the location of the second to last frame in the fourth from the beginning. This shows that the nucleus rotated under the impactor so that the sub-spacecraft point moved from lower right to upper left, from those two bright deposits to the low scarp at upper left. Some of the motion I see is definitely from lower right to upper left, on average, but there are a few deviations. Still, very odd frost deposits, definitely suggesting that we will find fresher ice beneath this dark surface layer (a la Phoebe). -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Jul 4 2005, 04:25 PM
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#68
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Member Group: Members Posts: 877 Joined: 7-March 05 From: Switzerland Member No.: 186 |
wow, you found likely the right impact spot! I agree with it! Never thought that it's so far on the left.
Additionally we have to consider the shape of the comet that was "hanging over" for the impactor. -------------------- |
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Jul 4 2005, 05:59 PM
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#69
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Member Group: Members Posts: 257 Joined: 18-December 04 Member No.: 123 |
Looks Like your spot on. I overlayed the closeup with the image taken further up. They line up exactly. -------------------- Turn the middle side topwise....TOPWISE!!
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Jul 4 2005, 06:11 PM
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#70
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Member Group: Members Posts: 257 Joined: 18-December 04 Member No.: 123 |
In fact the last one seems to fit in too here.
This is very rough. But you get the idea. Any takers....? Edit: Although looking again....not too sure -------------------- Turn the middle side topwise....TOPWISE!!
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Jul 4 2005, 06:24 PM
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#71
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Senior Member Group: Members Posts: 1276 Joined: 25-November 04 Member No.: 114 |
Cool animations!
This is a great press conference! |
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Jul 4 2005, 06:25 PM
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#72
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
1600GMT Press Conf Highlights
Web Hits : Last 24 hrs 1 billion hits. 2.5X that of busiest day for MER Flyby Spacecraft in Great Shape - amazing picture post-shield mode, plume looks as large as the whole comet Pre-Release targetting was a few km off to the left. Post ITM1 was way below the comet, Post ITM2 was just left of centre, and ITM3 just below and to the right of it. New result : Map of temp of the Neuc pre-impact. Sub-solar part is warmest (obviously) Ejecta/Outgassing coming out for several hours after impact. Lots of topographic relief - things that really do look like impact craters. Bright spots, mostly just steep sun-facing slopes - a couple are not. Almost certainly there is layering, jets coming from somewhere they hope to trace Two circular features were refered to as craters Sequence of videos - shadow caused by ejecta Processed HRI imagery movie of impact - not THAT much better than the MRI movie Height of ejecta on lookback image (at about 27,000km) 1000's of Km's height to ejecta. Mainly dust Not 100% sure if they can actually see the crater - they have a 'feature' that may be the crater. Approx 160kg useable fuel onboard flyby. Do not have specific extended mission plan currently, will probably mothball the spacecraft in a few weeks. (I assume to pick it up again in the future) Further simualted impacts at the ames canon. 'Dual-ish' plume, i.e. one narrow straight-out plume, then a wider plume to follow. Happens when the impactor goes into the surface ( a soft layer ) then goes kerpow. Doug |
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Jul 4 2005, 06:31 PM
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#73
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Senior Member Group: Members Posts: 1276 Joined: 25-November 04 Member No.: 114 |
Are raw images available yet?
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Jul 4 2005, 06:36 PM
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#74
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Senior Member Group: Members Posts: 1887 Joined: 20-November 04 From: Iowa Member No.: 110 |
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Jul 4 2005, 06:48 PM
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#75
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Member Group: Members Posts: 257 Joined: 18-December 04 Member No.: 123 |
QUOTE (alan @ Jul 4 2005, 07:36 PM) Looks like you found a much better match alan.
Attached image(s)
-------------------- Turn the middle side topwise....TOPWISE!!
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