Purpose of the flight and payload description

In this flight was observed the atmosphere of Venus.

Details of the balloon flight

Balloon launched on: 2/21/1964
Launch site: Holloman Air Force Base, Alamogordo, New Mexico, US  
Balloon launched by: Air Force Cambridge Research Laboratories (AFCRL)
Balloon manufacturer/size/composition: Zero Pressure Balloon Schjeldhal - 3.200.000 cuft (0.75 mil. GT-12 Dacron and Mylar scrim)
End of flight (L for landing time, W for last contact, otherwise termination time): ??/??/1964
Balloon flight duration (F: time at float only, otherwise total flight time in d:days / h:hours or m:minutes - ): 6 h 30 m
Payload weight: 2000 lbs

External references

Images of the mission

Detail of the instruments located inside the gondola. View of the gondola before launching      

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