Payload development and launch of a stratosphere balloon mission. - Andreas Altmann; Wolfgang Birkner; Franz-Xaver Häckl; Christopher Hanner; Peter Liebhart; Samuel Metschl; Florian Weck; Michael Farmbauer; Manfred Heiß; Hellmuth Cuno; Thomas Fuhrmann; Roland Mandl; et al. (EDUCON, 2014)