A team at Heatsyn Labs is building a near space high altitude balloon payload to take photos and to enter a national contest. I’m not on the team but I was helping test their tracking electronics with my home built vacuum chamber. We used the chamber to test the radio and GPS equipment in near space conditions. Next meeting we will add dry-ice around the chamber to simulate the -70F temps at 100,000 feet. If there is any issues its best if it shows up on the ground and not at 18 miles up.
Heatsync Labs Homepage
Heatsync Labs Nearspace Balloon Project
Flickr photos by John Kit at Heatsyn Labs
I will post update with photos and links after the first test flight.