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A device for forming and recording images; the basic tool of photography. In its simplest form, a camera is a lighttight box in which an image is...
A fast, compact, wide-field optical system that uses a thin aspheric front lens at the center of curvature of a larger concave spherical mirror. The...
Camera rangefinders (in 'Rangefinder' article)
These usually have base lengths varying from less than 1 in. (25 mm) to more than 3 in. (75 mm), with magnifications between 0.5 and 2.5. The lower p


= Encyclopedia Article; = Research Update
Figure 1.Cross section of Schmidt camera with aspherical corrector plate. (After J. M. Pasachoff, Astronomy: From the Earth to the Universe, 6th ed., Brooks/Cole Publishing, 2002)
From Encyclopedia article 'Schmidt camera'
Figure 2.Samuel Oschin Telescope, a 48-in. (1.2-m) Schmidt camera at Palomar Observatory. (a) Interior view (courtesy of Alain Maury). (b) Exterior view. A large liquid nitrogen tank to the right of the open dome is used for cooling the instrument (courtesy of Scott Kardel).
From Encyclopedia article 'Schmidt camera'
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