Beagle 2 in HiRISE, Possible Targets |
Beagle 2 in HiRISE, Possible Targets |
Feb 14 2007, 05:04 PM
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
EDIT: Moved these posts from the Feb 14 HiRISE Release thread to here to collect all Beagle 2 search related stuff in one place.
I'm downloading them now too -- guess I can't blog about them until I've examined them very carefully! For a bit of history on the search, Here's a blog entry I wrote about this spot a while ago Here's the MOC team's take on that spot And here's the BBC page with the Beagle 2 team's take on it EDIT: and here's my updated blog entry with links to the Beagle 2 landing ellipse images split up into 40-MB chunks. --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Feb 16 2007, 04:13 PM
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Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
As the simulation shows - it would be the right sort of size for the heatshield or backshell or unopened lander - but a deployed lander I would expect to look different. If you were to say "this IS a bit of Beagle 2 - which bit?" - I would say the heatshield. But - if you ask which is more likely - 800 megapixels having the odd imaging artifact or a piece of B2 indicative of the spacecraft making it through entry and deploying it's heatshield but later failing, and that heatshield being visible in the first HiRISE image of the landing ellipse....I'd say cosmic ray hit. I'm not saying it isn't a chunk of spacecraft - and it really does look like a chunk of B2. What I'd like is a HiRISE image targetted directly west of this one - a tiny bit of overlap - but I would expect the 'chute to be back up the trajectory and thus west of the heatshield (same was true of Spirit and Opportunity if you think about it.)
Until we see either a fresh crater or a main chute - I don't think it's wise to say we've found any Beagle hardware - we've simply found interesting targets. Just thinking out-loud again - the TDI CCD's on HiRISE, there's plenty of scope for a single cosmic ray hit to actually take out a few pixels in one go - 128 lines to have a stab at for each 'finished' pixel if you think about it. Attached - an extract from the mission report which you can find at http://www.src.le.ac.uk/projects/beagle2/reports.html Suggestive that the heatshield might be somewhere around 150m downrange from the rest of the vehicle...of course drift under the chute and bouncing around could obviously change that significantly. Doug |
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