or Connect
AppleInsider › Forums › Other Discussion › AppleOutsider › Deep Impact: Comet whacking
New Posts  All Forums:Forum Nav:

Deep Impact: Comet whacking

post #1 of 31
Thread Starter 
Not satisfied with earthly fireworks on July 4th?

How about an impact intended to vapourize a football stadium sized hole in a comet!



Space.com summarizes the mission

NASA official site

JPL mission page

Those who were participants in the Send Your Name to a Comet program can claim their message as orbital vapour after impact.

At this point, I've now sent names of relatives to Mars on the MER rovers, Comet Wild-2 via Stardust (due to return), and to Comet Tempel 1. Immortality of a sort via a program that sparks imagination and participation. Novel, and in this case, cool.

Folks who missed the earlier participatory activities can still play comet games...
Guess the crater size, win a prize

As for the impact itself, viewers in Western Canada and parts of the Pacific have a good shot at watching the show (skies permitting), so I'm crossing my fingers and polishing my binoculars for any flashes east of Spica around 10:52PM PDT on July 3rd.

Observing tips can be found here

NASA TV has the following press events scheduled:
Quote:
Deep Impact Press Encounter Events - Jul. 1 - 4
All times PDT.

Pre-impact briefing: July 1, 10 a.m.
Pre-impact update: July 3, 11 a.m.
NASA TV coverage: July 3, 8:30 p.m.
Expected time of impact: July 3, 10:52 p.m.
Post-impact briefing: July 4, 1 a.m.
Post-impact press conference: July 4, 11 a.m.

Regular teevee will be full of comet news for the next week as the general public clues in.

No need to put the torpedoes into the exhaust port, an impact on the surface is fine, Luke.
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
post #2 of 31
Brilliant, there really should be an amateur astronomy thread in AppleOutsider. . A q u a M a c .
Why do so many Sys Admins hate the Mac? . A q u a M a c .
Reply
Why do so many Sys Admins hate the Mac? . A q u a M a c .
Reply
post #3 of 31
i hope we don't awaken any ancient alien species/ viruses/ hardware/ beacons somehow
that will spell teh doom of mankind
post #4 of 31
Thread Starter 
Deep Impact mission reports successful separation of its Impactor spacecraft.



On target for collision with the comet within 12 hours.

http://www.jpl.nasa.gov/ has a timeline and links to more sites and webcasts.

First Spectrographic data is coming back... (click for details)

"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
post #5 of 31
Cool. Preemptive strike. Whack the comet first before it whacks us.
post #6 of 31
on a more educated note, i did biology and computer science at university. i always seemed to enjoy reading bandwidth spikes rather than some nasty ass shite we had to do interpreting NMR spectroscopy for (organic?) chemistry classes.

it still gives me the heebie jeebies... *shudder*

so, my question is,

what is all the other stuff on the spectrum? for other wavelengths theres some other peaks, and what's the big chunk of stuff to the left of where the infra-red has detected h20?

your enlightening guidance is appreciated, oh leet appleinsiders.
post #7 of 31
Thread Starter 
All spacecraft systems report green in advance of next clock timed events for AutoNav.

Lots of engineering com chatter if you're into that kind of thing.

2+ hours to impact.
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
post #8 of 31
As always, 'Burb, my heart felt kudos for your thorough and timely space exploration threads. AO is my one stop source for all things NASA, thanks to you.

Now I'm off to the linked site for viewing tips on the off chance the Bay Area has a view.....
They spoke of the sayings and doings of their commander, the grand duke, and told stories of his kindness and irascibility.
Reply
They spoke of the sayings and doings of their commander, the grand duke, and told stories of his kindness and irascibility.
Reply
post #9 of 31
Oh, and an "Astronomy/astrophysics" type forum would be fantastic.

Maybe general science besides computers?
They spoke of the sayings and doings of their commander, the grand duke, and told stories of his kindness and irascibility.
Reply
They spoke of the sayings and doings of their commander, the grand duke, and told stories of his kindness and irascibility.
Reply
post #10 of 31
Thread Starter 
Impactor AutoNav is targeting and has completed its first of three scheduled burns.
(one at 90 mins out, one at 40, and a final trajectory correction at 12 minutes to impact)

AutoNav images are being downlinked (though they're not high res).

All systems are go.

Click for Flash Feature from NASA
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
post #11 of 31
Thread Starter 
NASA TV coverage has lots of engineering chatter, some nice Maas Digital animations, and various rocket scientists giving interviews during the commentary prior to impact.

Best webcast I can find is a 150Kbps Real10 stream
(if anybody has linkage to a higher bandwidth connection, please share.)

The NASA TV Landing page links to 150Kbps Real8 or 150Kbps Windows Media Streams
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
post #12 of 31
Thread Starter 
If you do see geek footage, they've cleverly assigned colour codes for shirts.

the red shirts are the impactor team (oh no!), blue shirts are flyby team,
white shirts are management, the ESA guy is in banana yellow, but no shatner.
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
post #13 of 31
Thread Starter 
Impactor Trajectory Maneuver # 2 has occurred. All systems look good.

They've released a raw picture from the Impactor camera (four quadrants of distinctly different brightness due to CCD, pre-deconvolving [fixing the out of focus error they discovered after launch])

More impressive, NASA TV showed one of the first images (through 8 filters) from the high-resolution camera. I can't see it on the gallery site yet, but it looks like the nucleus is relatively eggplant shaped with some large depressions or craters.

Sounds like the image processing turnaround is approaching 60 seconds from reception to 'public'.

One of the team science women mentioned the impactor dumps to the flyby for storage on NVRAM, and that they expect to fill one of the boards to 95% before dumping to the other NVRAM board and starting relay send to earth.

Camera rotation on one set of gimbals needs to be synched with high gain antenna pointing at earth on another set of gimbals.

Looking very optimistic at this point that they'll get spectacular results. Maybe 1m resolution.

That said, they expect the flyby spacecraft to go through a dust cloud, and all the rushed relay is in case the flyby doesn't survive. If it does, bonus.
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
post #14 of 31
Thread Starter 
Final Impactor Targeting Maneuver #3 completed.

11 minutes to impact. All systems go.
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
post #15 of 31
Thread Starter 
And the partying begins... confirmation of impact!

And Damn Impressive Impact pictures!
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
post #16 of 31
Where are you viewing the pictures from?
PM G5 Dual 2.0GHz, 2GB RAM
PB G4 1.67GHz, 1.5GB RAM
Reply
PM G5 Dual 2.0GHz, 2GB RAM
PB G4 1.67GHz, 1.5GB RAM
Reply
post #17 of 31
It's pretty wild how closely the graphic from NASA you posted at the beginning of the thread matches the actual impact shots.
They spoke of the sayings and doings of their commander, the grand duke, and told stories of his kindness and irascibility.
Reply
They spoke of the sayings and doings of their commander, the grand duke, and told stories of his kindness and irascibility.
Reply
post #18 of 31
Thread Starter 
Before


After


Confirmation of Impact


Note clock differences and brightness graph changes in lower right
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
post #19 of 31
You know, for a "dirty snowball" that thing sure does have a lot of interesting surface topography.
They spoke of the sayings and doings of their commander, the grand duke, and told stories of his kindness and irascibility.
Reply
They spoke of the sayings and doings of their commander, the grand duke, and told stories of his kindness and irascibility.
Reply
post #20 of 31
Certainly got a new one today.

ShpladOW!!!
MWSF '07: Steve Jobs hates my wallet and my mobile carrier.
Reply
MWSF '07: Steve Jobs hates my wallet and my mobile carrier.
Reply
post #21 of 31
take that comet !!! bwah ha ha ha hahha ha

well, this makes me feel more at peace. we can definitely blow up any rogue comet with nukes if it threatens earth. awesome. and we probably wouldn't have to risk any real people, just probes and droids and stuff.

bwah ha hah haha hahaha ha hha
post #22 of 31
Quote:
Originally posted by sunilraman
take that comet !!! bwah ha ha ha hahha ha

well, this makes me feel more at peace. we can definitely blow up any rogue comet with nukes if it threatens earth. awesome. and we probably wouldn't have to risk any real people, just probes and droids and stuff.

bwah ha hah haha hahaha ha hha

I believe disaster movies have made it clear that any effort to blow up a comet or asteroid just breaks it up into chunks that will do even more damage, and that in fact our only real hope lies in a fast track mission of an ad hoc team of lovable, wisecracking misfits who will leave one of their members behind.

Oh wait, I'm thinking of how you fix social security......
They spoke of the sayings and doings of their commander, the grand duke, and told stories of his kindness and irascibility.
Reply
They spoke of the sayings and doings of their commander, the grand duke, and told stories of his kindness and irascibility.
Reply
post #23 of 31
Quote:
Originally posted by addabox
I believe disaster movies have made it clear that any effort to blow up a comet or asteroid just breaks it up into chunks that will do even more damage, and that in fact our only real hope lies in a fast track mission of an ad hoc team of lovable, wisecracking misfits who will leave one of their members behind.

Oh wait, I'm thinking of how you fix social security......

ROFLMAO heh heh
post #24 of 31
Quote:
Originally posted by sunilraman
take that comet !!! bwah ha ha ha hahha ha

well, this makes me feel more at peace. we can definitely blow up any rogue comet with nukes if it threatens earth. awesome. and we probably wouldn't have to risk any real people, just probes and droids and stuff.

bwah ha hah haha hahaha ha hha

The problem is seeing some of these things before they hit. Even in the last few decades there has been a few rocks that came and went before we even realized it. We need to have more searches going on. Bravo to NASA they did a great job on this one. Now if we can just get a cheap and safe way to low earth orbit we will be on our way.
VOTE OUT ALL INCUMBENTS! Its the only way we can clean up Congress.
Reply
VOTE OUT ALL INCUMBENTS! Its the only way we can clean up Congress.
Reply
post #25 of 31
Thread Starter 
Impactor nosecam movie...


We're Going In

Some impressive resolution before the camera lens got blasted by dust.
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
post #26 of 31
Why are there never any stars in these types of pictures? I know hollywood jacks up the star size and count to look cooler but NASA shit is all pitch black space and not at all like what I can see from the ground (which is a ton of stars).

I understand exposures etc. but even the handheld videocameras on the shuttles, when auto adjusting exposures as they moved, never show a hint of stars.
"The Roots of Violence: wealth without work, pleasure without conscience, knowledge without character, commerce without morality, science without humanity, worship without sacrifice, politics...
Reply
"The Roots of Violence: wealth without work, pleasure without conscience, knowledge without character, commerce without morality, science without humanity, worship without sacrifice, politics...
Reply
post #27 of 31
Quote:
Originally posted by johnq
Why are there never any stars in these types of pictures? I know hollywood jacks up the star size and count to look cooler but NASA shit is all pitch black space and not at all like what I can see from the ground (which is a ton of stars).

I understand exposures etc. but even the handheld videocameras on the shuttles, when auto adjusting exposures as they moved, never show a hint of stars.

1 there are more stars then hollywood uses and 2 the bright object overpowers any hint of a star background, its like looking into the sun. Thanks curiussuburb for the quicktime link.
VOTE OUT ALL INCUMBENTS! Its the only way we can clean up Congress.
Reply
VOTE OUT ALL INCUMBENTS! Its the only way we can clean up Congress.
Reply
post #28 of 31
Thread Starter 
Quote:
Originally posted by johnq
Why are there never any stars in these types of pictures? I know hollywood jacks up the star size and count to look cooler but NASA shit is all pitch black space and not at all like what I can see from the ground (which is a ton of stars).

I understand exposures etc. but even the handheld videocameras on the shuttles, when auto adjusting exposures as they moved, never show a hint of stars.

In some cases, they've filtered the image to subtract stars, because depending on mission, that's not what they're interested in and they can get more precise imaging of the real target with special processing.

In the majority of other cases, it's mostly a matter of sensitivity and exposure.
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
post #29 of 31
Thread Starter 
Flyby Spacecraft offers first movies of impact.

Still in need of processing to clean up the images, but even the preliminary shows an epic smack.

(note that the actual movies are smaller res than the blowup stills linked below.

Medium Resolution Camera
Click for QT Movie

High Resolution Camera
Click for QT Movie

Impressive!
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
"I do not fear computers. I fear the lack of them" -Isaac Asimov
Reply
post #30 of 31
Quote:
Originally posted by curiousuburb
Impactor nosecam movie...


We're Going In

Some impressive resolution before the camera lens got blasted by dust.


good stuff. stellar, if i may say so (pun intended)

you do know that all the 3d and visual effects artists are just creaming themselves over all this stuff, mainly because they're getting NASA 'reference' footage for a lot of their work.

from a visual effects perspective, three things stand out

1. the camera is able to resolve all the comet 'halo' away and just focus on the nucleus, which looks like an asteroid

2. a lot of surface texture, not much geysers and debris being ejected from the nucleus, even for the 'sun side' of the comet

3. totally unlike the movies Deep Impact and Armageddon there is apparently no fancy flying required by han solo - type hotshot pilots on approach to the surface, mainly because of IMHO see point 2. above


hmmmm
..............
..............
post #31 of 31
Absolutely amazing! great thread
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AppleOutsider
AppleInsider › Forums › Other Discussion › AppleOutsider › Deep Impact: Comet whacking