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09/23/2008 04:23:39 PM · #1 |
So I'm doing a project that involves sending a helium balloon up 90,000-100,000 feet with a couple of little video cameras in (definitely not my Rebel!!) and I was wondering if any of you knowledgeable people know what would happen to lenses/sensors at those kinds of altitudes.
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09/23/2008 04:27:10 PM · #2 |
| other than the possibility of frost or fog on the lenses and or sensors the only other thing is the cold will drastically reduce the battery life... make sure you have good batteries in them :) |
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09/23/2008 04:34:06 PM · #3 |
| I should be more worried about the landing.... |
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09/23/2008 04:54:51 PM · #4 |
| Good thoughts about the battery and the landing. LOL Shouldn't have to worry about lens fogging at 90,000 feet unless it's enclosed at normal atmospheric pressure. Not much moisture available at that altitude. Sounds like a cool project. Will you have UHF downlinks to look at the video or just store to a flash card or something? I'm an amateur radio op and occasionally hear about a group with such a project. |
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09/23/2008 05:00:43 PM · #5 |
Originally posted by hajeka:
I should be more worried about the landing.... |
I think they've survived like four or five landings already (they go up in a styrofoam box with padding in, I believe), we just need to come up with a problem statement.
Thanks for the info for on the battery life! That's interesting, I didn't know that. One of them has a rechargeable battery, the other one will be sure to have excellent batteries.
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09/23/2008 05:02:38 PM · #6 |
Originally posted by fir3bird:
Good thoughts about the battery and the landing. LOL Shouldn't have to worry about lens fogging at 90,000 feet unless it's enclosed at normal atmospheric pressure. Not much moisture available at that altitude. Sounds like a cool project. Will you have UHF downlinks to look at the video or just store to a flash card or something? I'm an amateur radio op and occasionally hear about a group with such a project. |
Possibly. It's my lab for my astronomy class (which is mysterious, because it has nothing to do with what we're learning about in class...we're also sending up a sensor array to do stuff with humidity and such.
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