$1000 to complete this with a Raspberry Pi and low-grade HD equipment?
Im doing that exact experiment, although with better camera equipment and a balloon in A-grade material (last flight was 39,8km)
http://andruszkow.dk/stuff.jpg - There's like, $100 worth of electronics here, including all the sensors. $1000 for what?
The experiment itself is awesome - The catalysator for doing it is ridiculous. Boy is he going to be disappointed when he launches at nighttime when the Sun is supposedly on the other side of the globe, and find that he wont be able to see it from his balloon