英和和英

出典:『Wikipedia』 (2011/02/16 15:57 UTC 版)

英語による解説

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The Boston Camera was a prototype airborne photo reconnaissance camera manufactured for the United States Air Force by Boston University in 1951 and tested on the Convair B-36 and the C-97 Stratofreighter. The model carried on the first ERB-36D (44-92088) had a 6096 mm (240 in) focal length, which was achieved using a series of lenses and mirrors. The lens had an f/8 stop and used a 1/400 second shutter speed, and could photograph a golf ball from an altitude of 45,000 feet. The camera used 18x36 inch (45x90 cm) negatives. The camera was used operationally in Eastern Europe. It was given to the Air Force Museum in 1964, along with a contact print of a golf ball on a course.