Purpose of the flight and payload description

 

Details of the balloon flight

Balloon launched on: 5/17/1975
Launch site: Columbia Scientific Balloon Facility, Palestine, Texas, US  
Balloon launched by: National Scientific Balloon Facility (NSBF)
Balloon manufacturer/size/composition: Zero Pressure Balloon Winzen - 162.616 m3 (25.40 microns)
Flight identification number: 889P
End of flight (L for landing time, W for last contact, otherwise termination time): 5/17/1975
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): F 9 h
Payload weight: 2466 kgs

Postal cover issued on launch day commemorating the flight

External references

Images of the mission

         

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