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Deep Impact Realtime Thread
djellison
post Jul 4 2005, 04:52 AM
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Well - impactor TCM 1 went well - <0.3% error and it's on course for a nominal impact time. PI has suggested that the comet is Banana shaped and we're going to hit the end of it which looks a little triangular ohmy.gif
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Phil Stooke
post Jul 4 2005, 09:10 PM
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Here I've tinkered with the brightness to see the terminator area better.

Attached Image


A lovely new world! Despite what A'Hearn said I think this is quite a lot like Borrelly in many respects - but we see it a lot better. It's VERY different from the weird Comet Wild-2, with its amazing spiky hills and scarps. The top is rotating towards us, meaning cometary north is to the right (the new IAU definition of north on objects like these).

Note how the two smooth patches give the appearance of lying in the the central portions of broad shallow depressions. A proper shape model will be made later, so I hope it confirms this. Despite VP's comments, I don't have a problem interpreting the circular features as impact craters, though presumably if the artificial impact tells us anything it should be that natural impacts will trigger venting and the crater will evolve rapidly. But the dark shading VP mentions looks to me like the outer part of the rim on one side, and the inner part of the rim on the opposite side... it looks OK as a crater to me. Well, we'll see... I have my opinions, but I've been wrong before. (just ask my kids!)

Phil


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MiniTES
post Jul 4 2005, 10:06 PM
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Let me get this straight: they're not sure if they see the crater? The whole point of the mission was to look inside the crater to see the interior of the nucleus! Don't get me wrong, the nucleus photos are great and the impact photos are absolutely spectacular, but what about the science?
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john_s
post Jul 4 2005, 10:13 PM
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QUOTE (MiniTES @ Jul 4 2005, 10:06 PM)
Let me get this straight: they're not sure if they see the crater? The whole point of the mission was to look inside the crater to see the interior of the nucleus! Don't get me wrong, the nucleus photos are great and the impact photos are absolutely spectacular, but what about the science?
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I don't think it's that bad- the main way they planned to see what was in the crater was to watch that stuff being blasted out into space, rather than look at what was left behind in the hole- they will have lots of data on what's inside the comet. But seeing the crater would tell a great deal about the strength of the nucleus and about impacts in general. If they can't see the crater through the the plume, it will be a disappointment, but not a disaster.
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MiniTES
post Jul 4 2005, 10:20 PM
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QUOTE (john_s @ Jul 4 2005, 10:13 PM)
I don't think it's that bad- the main way they planned to see what was in the crater was to watch that stuff being blasted out into space, rather than look at what was left behind in the hole- they will have lots of data on what's inside the comet.  But seeing the crater would tell a great deal about the strength of the nucleus and about impacts in general.  If they can't see the crater through the the plume, it will be a disappointment, but not a disaster.
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I see. I thought they wanted to see the layers of the interior of the comet in cross-section. Although it seems like the majority of the imaged are still being downlinked.


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MiniTES
post Jul 4 2005, 11:35 PM
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Trying to make sure I understand the geometry of the image: in the lookback image, the really bright spot is the sun, right? (As opposed to the plume from the impact)


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Posts in this topic
- djellison   Deep Impact Realtime Thread   Jul 4 2005, 04:52 AM
- - djellison   A rather rough and ready HRI picture on NASA TV - ...   Jul 4 2005, 05:09 AM
- - djellison   TCM 2 is in progress - estimated to be 40ish secon...   Jul 4 2005, 05:19 AM
- - hendric   Sounds like someone was concerned about microradia...   Jul 4 2005, 05:20 AM
- - hendric   Somebody just got up and ran off..."I told yo...   Jul 4 2005, 05:21 AM
- - djellison   I assume this is the calculated pointing error for...   Jul 4 2005, 05:22 AM
- - hendric   Figures...Nasa TV is showing images of the HRI. ...   Jul 4 2005, 05:23 AM
- - deglr6328   Did I get that right? They're doing (near) rea...   Jul 4 2005, 05:24 AM
- - hendric   Yep. On their laptops, no less. I guess Mike...   Jul 4 2005, 05:28 AM
- - djellison   Yup "Two days"...lmfao - 60 seconds Do...   Jul 4 2005, 05:31 AM
- - hendric   holy...I thought the tv camera defocused, but thos...   Jul 4 2005, 05:36 AM
- - djellison   For those with access - Sky News is carrying NTV a...   Jul 4 2005, 05:36 AM
- - djellison   Last TCM calculations suggest again, 2ish m/sec D...   Jul 4 2005, 05:38 AM
- - deglr6328   Final ITM (ITM 3) occurs in <3 min. As I unders...   Jul 4 2005, 05:39 AM
- - hendric   "Near real time" my butt. The Image Vie...   Jul 4 2005, 05:44 AM
|- - Bob Shaw   Good images of the nucleus - looks like a bent Enc...   Jul 4 2005, 06:07 AM
|- - Bob Shaw   A screengrab of the nucleus:   Jul 4 2005, 06:15 AM
- - djellison   FInal burn manouver complete - accurate to within ...   Jul 4 2005, 05:45 AM
- - deglr6328   Final TCM burn error less than 1/4 of a %!...   Jul 4 2005, 05:45 AM
- - djellison   10 seconds to go   Jul 4 2005, 05:51 AM
- - djellison   Loss of Signal   Jul 4 2005, 05:52 AM
- - djellison   WOoooooooooooooooooooooooooo - the pictures Doug   Jul 4 2005, 05:52 AM
- - djellison   Wow - this is like ranger - amazing images coming...   Jul 4 2005, 05:53 AM
- - deglr6328   WOW! lovely!! they look far closer t...   Jul 4 2005, 05:53 AM
- - hendric   Is that a crack?? My bet is for rubble pile!...   Jul 4 2005, 05:55 AM
- - djellison   Is it wrong that I was celebrating WAYYY before th...   Jul 4 2005, 05:57 AM
- - deglr6328   It's perfect! Perfectly centered in the im...   Jul 4 2005, 05:59 AM
- - alan   "doing very well for a spaceraft about to be ...   Jul 4 2005, 06:03 AM
- - lyford   Doh - party's over here now....   Jul 4 2005, 06:03 AM
- - djellison   Just taking photographs of my TV here - with Sky N...   Jul 4 2005, 06:04 AM
- - lyford   more here http://www.scotsons-shack.com/dimages.h...   Jul 4 2005, 06:05 AM
- - lyford   kitt peak working now Kitt Peak Live Feed   Jul 4 2005, 06:07 AM
- - hendric   Deep Impact II to hit an Asteroid?   Jul 4 2005, 06:10 AM
- - deglr6328   Sub-meter res images just before impact seem to sh...   Jul 4 2005, 06:13 AM
- - hendric   Consdering they're compensating for a really l...   Jul 4 2005, 06:14 AM
- - djellison   MRI of the impact. I just have to go 'BOOOOoo...   Jul 4 2005, 06:20 AM
|- - Bob Shaw   Medium resolution image of the impact:   Jul 4 2005, 06:25 AM
|- - Bob Shaw   Doug: Gonna send the Deep Impact Team a 'Gold...   Jul 4 2005, 06:27 AM
- - Sunspot   Any reports of observations from the ground?   Jul 4 2005, 06:21 AM
- - lyford   mirror of the pre impact animation from kitt peak ...   Jul 4 2005, 06:27 AM
|- - Bob Shaw   The final flyby picture before the 'hiding fro...   Jul 4 2005, 06:32 AM
- - garybeau   The best 4th of July fireworks I ever witnessed. C...   Jul 4 2005, 06:37 AM
- - djellison   The realtime image pages are healthily updated, bu...   Jul 4 2005, 06:59 AM
- - volcanopele   Try: http://pirlwww.lpl.arizona.edu/~perry/image...   Jul 4 2005, 07:01 AM
- - alan   impact images now available on near real time imag...   Jul 4 2005, 07:37 AM
- - Sunspot   http://www.spaceflightnow.com/deepimpact/050704fau...   Jul 4 2005, 07:55 AM
- - Jyril   Faulkes Telescope images can be found here.   Jul 4 2005, 07:56 AM
- - deglr6328   Pre and post (~20 minutes) images from the Faulkes...   Jul 4 2005, 08:04 AM
|- - jaredGalen   What time GMT is the press conference on? I don...   Jul 4 2005, 08:09 AM
|- - dvandorn   Now it's off of "Momentarily" and ba...   Jul 4 2005, 08:11 AM
|- - jaredGalen   QUOTE (jaredGalen @ Jul 4 2005, 09:09 AM)Edit...   Jul 4 2005, 08:12 AM
|- - jaredGalen   WOOOHOOO!!!   Jul 4 2005, 08:13 AM
|- - jaredGalen   Wow, more hits than Cassini and MER combined! ...   Jul 4 2005, 08:15 AM
- - Sunspot   I think it should have started 10 minutes ago. ...   Jul 4 2005, 08:11 AM
- - Jyril   It should start at any time now. They're havin...   Jul 4 2005, 08:11 AM
- - Jyril   Here's a blog from Planetary Society for those...   Jul 4 2005, 08:26 AM
- - Tman   Someone did a nice animation on web: http://pla...   Jul 4 2005, 08:50 AM
|- - abalone   Still image from impactor. Impact point is in cent...   Jul 4 2005, 09:08 AM
- - Decepticon   Did anyone get the reaction of the Deep Impact Tea...   Jul 4 2005, 12:03 PM
|- - Marcel   Before and after by Hubble http://deepimpact.jpl....   Jul 4 2005, 12:52 PM
- - ilbasso   I heard the rep from ESA say that Rosetta was also...   Jul 4 2005, 01:55 PM
- - Tman   There is an QT movie that shows most approach so f...   Jul 4 2005, 03:30 PM
|- - volcanopele   QUOTE (Tman @ Jul 4 2005, 08:30 AM)There is a...   Jul 4 2005, 03:52 PM
- - djellison   It may be that it started to tumble / wobble with ...   Jul 4 2005, 03:35 PM
|- - Jyril   QUOTE (djellison @ Jul 4 2005, 06:35 PM)It ma...   Jul 4 2005, 03:47 PM
- - Jyril   The hubble image posted earlier has been updated w...   Jul 4 2005, 03:45 PM
- - volcanopele   http://pirlwww.lpl.arizona.edu/~perry/images/impac...   Jul 4 2005, 04:04 PM
- - Tman   wow, you found likely the right impact spot! I...   Jul 4 2005, 04:25 PM
|- - jaredGalen   Looks Like your spot on. I overlayed the closeup ...   Jul 4 2005, 05:59 PM
|- - jaredGalen   In fact the last one seems to fit in too here. Thi...   Jul 4 2005, 06:11 PM
- - Decepticon   Cool animations! This is a great press confe...   Jul 4 2005, 06:24 PM
- - djellison   1600GMT Press Conf Highlights Web Hits : Last 24...   Jul 4 2005, 06:25 PM
- - Decepticon   Are raw images available yet?   Jul 4 2005, 06:31 PM
- - alan   Found a couple more matches in Tman's image   Jul 4 2005, 06:36 PM
|- - jaredGalen   QUOTE (alan @ Jul 4 2005, 07:36 PM)Found a co...   Jul 4 2005, 06:48 PM
- - Sunspot   It doesn't look like there are any plans for a...   Jul 4 2005, 06:48 PM
- - MizarKey   I loved the animated sequence showing the crater f...   Jul 4 2005, 06:49 PM
- - volcanopele   I'm still finding it hard to believe think of ...   Jul 4 2005, 07:01 PM
- - Phil Stooke   Here I've tinkered with the brightness to see ...   Jul 4 2005, 09:10 PM
|- - MiniTES   Let me get this straight: they're not sure if ...   Jul 4 2005, 10:06 PM
|- - john_s   QUOTE (MiniTES @ Jul 4 2005, 10:06 PM)Let me ...   Jul 4 2005, 10:13 PM
|- - MiniTES   QUOTE (john_s @ Jul 4 2005, 10:13 PM)I don...   Jul 4 2005, 10:20 PM
|- - MiniTES   Trying to make sure I understand the geometry of t...   Jul 4 2005, 11:35 PM
- - Decepticon   I though we would get better lookback images for m...   Jul 5 2005, 12:10 AM
- - Phil Stooke   MiniTES, the brightest spot in the lookback image ...   Jul 5 2005, 12:40 AM
- - BruceMoomaw   Actually, the scientific seriousness of the HRI fo...   Jul 5 2005, 01:48 AM
|- - tedstryk   Were the images taken after impact monochrome or m...   Jul 5 2005, 02:23 AM
|- - MiniTES   QUOTE (BruceMoomaw @ Jul 5 2005, 01:48 AM)......   Jul 5 2005, 02:38 AM
- - BruceMoomaw   To Ted: both the HRI and MRI images were multispec...   Jul 5 2005, 02:40 AM
|- - MiniTES   QUOTE (BruceMoomaw @ Jul 5 2005, 02:40 AM)To ...   Jul 5 2005, 02:46 AM
|- - MiniTES   I also think NASA could have milked the publicity ...   Jul 5 2005, 03:07 AM
- - BruceMoomaw   To "Mini-TES": actually, your second sou...   Jul 5 2005, 04:19 AM
- - BruceMoomaw   As for an extended mission to a second comet; I ca...   Jul 5 2005, 04:21 AM
- - BruceMoomaw   And as for the impact being precisely on July 4 (w...   Jul 5 2005, 04:29 AM
- - BruceMoomaw   And here, finally, is the only additional data I w...   Jul 5 2005, 05:14 AM
- - BruceMoomaw   And here's a third one, which is useful in bei...   Jul 5 2005, 05:23 AM
- - slinted   Bruce: The pds site with the calibration data has...   Jul 5 2005, 05:59 AM
- - BruceMoomaw   Splendid! Thanks.   Jul 5 2005, 03:59 PM
- - Tman   Maybe you want to get a deeper look at the impact ...   Jul 5 2005, 05:02 PM
- - alan   What small mound?   Jul 5 2005, 05:17 PM
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