Device for establishing infinity focus plane of long focal length lenses by autocollimation methods, designed and built at U S Naval Ordnance Test Station, China Lake, Calif; through use of adapters, device can be used on various test range cameras; methods for adjusting device and determining visual infinity focus plane; focusing errors compared with those of normal method; pertinence to tracking cameras for rocket and guided missile testing.
Autocollimation device for focusing test-range cameras
Photographic Eng
Photographic Engineering ; 7 , n 1
1956
6 pages
Article (Journal)
English
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