I want to explore taking pictures from a kite or balloon. (I saw some guys doing this at a hobby show a few years back.) I need to consider the following: - a camera - a shutter-pressing mechanism that will take pictures over an interval, such as every minute or every hour. That might be a built-in time-lapse feature, or it might be some mechanical shutter-pressing device. - storage format - digital would be great, but emulsion will do if that's the only way I can meet my other criteria - it has to store the pics onboard until I can retrieve them, since it will be out of range. - obviously onboard power - all in a device that's cheap enough that I can afford to lose/break it I'm looking for in- or out-of-the-box ideas on how to overcome the technicalities of such a thing.