The scientific payload consisted of two high pressure Multiwire Spectroscopic Proportional Counters (MWSPC) with 900 cm2 sensitive geometric area each, that observed in the hard X-Ray domain (16-180 keV). The field of view of the detectors was limited by means of two graded passive collimator having 7.5' x 7.5' and 5' x 5' FWHM aperture respectively. The detectors along with the on board data handling hardware were mounted on an azimuth stabilízed platform.
Balloon launched on: 8/26/1979 at 2:48 utc
Launch site: Base di Lancio Luigi Broglio, Trapani, Sicily, Italy
Balloon launched by: Agenzia Spaziale Italiana (ASI) / Centre National d'Etudes Spatiales (CNES)
Balloon manufacturer/size/composition: Zero Pressure Balloon 350.000 m3
End of flight (L for landing time, W for last contact, otherwise termination time): 8/27/1979
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): 17 h
Landing site: In Cullar de Baza, Granada, Spain
Campaign: ODISSEA 79
Payload weight: 465 kg
Overall weight: 715 kg
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