BETS (Balloon-borne Electron Telescope with Scintillating fibers) - Solar panels test

Balloon launched on: 9/3/2001 at 8:50 jst
Launch site: Sanriku Balloon Center, Iwate, Japan  
Balloon launched by: Institute of Space and Astronautical Science (ISAS)
Balloon manufacturer/size/composition: Zero Pressure Balloon model B50 50.000 m3
Flight identification number: B50-47
End of flight (L for landing time, W for last contact, otherwise termination time): 9/3/2001
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): 7 h 39 m

The instrument was launched to observe electrons in the energy range above 100 GeV. All of the scientific instruments were in good running order during the flight, and successfully obtained data on electrons in the intended energy range. The data obtained served as basic information for long-duration flight performed the next year around Antarctica.

• Scientific observations with balloons Institute of Space and Astronautical Science Annual Handbook 2001 (In Japanese)
• Sounding rockets and ballooning activities of Japan in 2001 and 2002 16th ESA Symposium on European Rocket and Balloon Programmes and Related Research
• The 2nd Series of Scientific Ballooning Experiments in 2001 JAXA website