Purpose of the flight and payload description

The instrument was a high resolution gamma-ray spectrometer for astrophysical measurements. It was composed by a large Ge(Li) crystal (140 cm3) cooled to liquid nitrogen temperature and actively shielded by a sodium iodide crystal. Spectral resolution and effective area, were respectively 3.0 keV (fwhm) and 2.7 cm2 at 1 MeV

Details of the balloon flight

Balloon launched on: 2/8/1977 at 6:35 utc
Launch site: Guaratinguetá Air Base, Sao Paulo, Brazil  
Balloon launched by: Centre National d'Etudes Spatiales (CNES)
Balloon manufacturer/size/composition: Zero Pressure Balloon model 350sf Zodiac - 350.000 m3
End of flight (L for landing time, W for last contact, otherwise termination time): 2/8/1977 at L+7
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): 7 h
Landing site: In Sao Joao Cajua - Paraná

External references

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