Here you will find all data collected during the 2014 high altitude balloon flight.
This is a semicolon-separated CSV file with about one data point per second. It includes:
There were two cameras on board. Camera 1 was a 5 MP Raspberry Pi Camera pointing to the horizon and Camera 2 a 720P webcam pointing to the ground.
Pictures were taken every 30 seconds. All pictures that turned out somewhat good are on Flickr: