Deep Impact Realtime Thread Options

[ilbasso]

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!

[Tman]

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

[djellison]

It may be that it started to tumble / wobble with impacting in the last few seconsd perhaps?

Doug

[Jyril]

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/

[Jyril]

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.

[volcanopele]

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.

[volcanopele]

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).

[Tman]

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.

[jaredGalen]

Looks Like your spot on.
I overlayed the closeup with the image taken further up.
They line up exactly.

[jaredGalen]

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

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[Decepticon]

Cool animations!


This is a great press conference!

[djellison]

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

[Decepticon]

Are raw images available yet?

[alan]

Found a couple more matches in Tman's image

[jaredGalen]

Found a couple more matches in Tman's image

Looks like you found a much better match alan.

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