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Posted 2/20/2009 Printable Fact Sheet
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Model A-2 Camera Set
Technicians load a type A-2 camera set into a U-2’s equipment bay or “Q-bay.” This camera configuration was used on the first U-2 Soviet overflight on July 4, 1956. (U.S. Air Force photo)
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Model A-2 Camera Set
This system of three high-altitude aerial reconnaissance cameras was developed for the U-2 in the late 1950s. These Hycon model 732 cameras created much more detailed images than earlier cameras. For example, their lenses could "see" and record objects as small as two feet across from a height of more than 12 miles. This allowed photo interpreters to identify different types of vehicles, weapons, aircraft, missiles, and buildings. Earlier typical aerial cameras had much lower resolution and had to be used at lower altitudes--they could only see objects 20-25 feet across at 33,000 feet (about six miles), half the U-2's operating altitude. 

Camera sets like the one on display were used in the first U-2 flights over the USSR, but soon gave way to more sophisticated equipment. The A-2 continued in use, though, for many years in photo mapping and natural resources monitoring. 

Each camera in the A-2 set could carry 1,800 feet of Eastman Kodak's newly-developed lightweight Mylar-based film, which made 9-inch-by-18-inch negatives. The A-2 system was adapted from older designs to be lightweight and to endure the cold temperatures and low atmospheric pressure of high-altitude flight. The cameras have 24-inch focal length f8 lenses. With film, the entire set weighed 339 pounds.

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