High altitude balloon payload, from Sable-3 discussion |
High altitude balloon payload, from Sable-3 discussion |
Sep 26 2007, 11:16 PM
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Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
http://www.unmannedspaceflight.com/index.p...20&start=20
We began talkin about a UMSF balloon - and who know what might happen if enough people think about something hard enough, thoroughly enough and long enough. How's about this as a starting point. http://vpizza.org/~jmeehan/balloon/ with http://www.chem.hawaii.edu/uham/part101.html as an important regulatory start point (I'm going to look up the UK regs for this as well) http://www.srcf.ucam.org/~cuspaceflight/nova1launch.html is also very impressive - all done in the UK This http://www.makezine.com/blog/archive/2007/...video_podc.html is particularly impressive - I like the multiple-cameras slant. Anyway - thought I'd get a thread going - this is an idea I like too much to let it gather dust in a corner - the one thing that I think would be nice to achieve is self-portraiture of some sort - think Beagle 2's WAM etc....perhaps in a corner of the FOV of one of/the imaging system. What sort of limit's should we set ourselves? 1kg 10x10x20cm? (sort of 2U Cubesat-on-a-diet budget) Doug |
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Oct 2 2007, 08:31 PM
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Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
Well - I've just ordered three very VERY cheap 3 megapixel cameras. Cheap enough that I don't care if they get...
1. Broken by me stripping them out to work with a timer circuit 2. Frozen to death 3. Broken on landing via drowning, crushing etc 4. Lost for all eternity - last seen at 95,000ft over Norfolk. And also - if they're any good at all - I''ll get another half dozen just so we've got 'stock' as it were. Once I know roughly how large their images are, I'll get SD cards to suit the requirements of >3 hrs at 20 second intervals. For the price of my 400D (which isn't going within 10 miles of a polystyrene fish storage box hung under a giant condom full of helium some idiot from Leicester's going to let go) - I could by 24 of these 3 megapixel jobs. Once I have them (this weekend - I'm away giving a talk tomorrow) - I'll 'calibrate' them to find their actual FOV and work on some sort of internal framework (balsa and/or foam) to mount them at appropriate angles to one another in landscape (if the vertical FOV is >45 degrees) or portrait (if the vertical FOV is <45 degrees) Before that - I want to figure out how to power all three from one big-ass central power supply, how long that will last, and if I can wire them up into one relay - or if I'll have to power three relays with the one timer circuit relay...to trigger them. Once I've got my mirrors - I'll be figuring out if CatCam can do the GMC campaign on its own - or if I want to tie that in with the same circuit (I think I do) Meanwhile - got to convince the photographer that she wants to let catcam get trashed....could be difficult. |
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