C. G. Wynne
Abstract
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The possibility is discussed of securing an extended field of good resolution at the focus of a Cassegrain telescope, by the use of a doublet field corrector lens. Three possible configurations are described, with design data and performance figures for an example of each.
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The possibility is discussed of securing an extended field of good resolution at the focus of a Cassegrain telescope, by the use of a doublet field corrector lens. Three possible configurations are described, with design data and performance figures for an example of each.
Key concepts: Cassegrain reflector, Physics, Telescope, Optics, Focus (optics), Lens (geology), Field (mathematics), Reflecting telescope