WebBy the time Thomas Cave sold the business in 1979, Cave Optical had produced about 83,000 mirrors and 16,000 complete telescopes with mountings sold under the Astrola brand name. In the company's later years, they also made a few refractors. WebAug 21, 2024 · The earliest optical telescopes we know of were made in 1608. They were made in the Netherlands by various optical craftsmen. One of them, Hans Lippershey, publicized his design well enough that news reached Galileo Galilei in Italy in 1609. When Galileo heard of the telescope, he built his own.
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WebTwo 20th century optical designers, Bernhard Schmidt and Dmitri Maksutov, solved this. They substituted spherical mirrors for the complex paraboloid and hyperboloid mirrors, and added corrector plates to correct the ensuing optical problems. Maksutov's solution was to add a thick, deeply curved meniscus lens to the front of the telescope. WebOptical production technology / by: Horne, Douglas F. (Douglas Favel), 1915- Published: (1983) Precision optical glassworking : a manual for the manufacture, testing and design of precision optical components and the training of optical craftsmen / by: Zschommler, W. (Willy) Published: (1984) flapjacks cave creek
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WebJun 9, 2024 · The skilled optical craftsmen at Optical Surfaces are experienced in producing concave spherical mirrors (up to 800mm in diameter) with surface accuracy of better than lambda/10 with particular emphasis on smoothness of the profile. Ultra high precision surface finish and durable optical coatings combine to provide superior Schlieren image … WebApr 8, 2013 · An Interview with Dick Nelson of The Optical Craftsmen Posted by Barry Kawaguchi 04/08/2013 12:00AM In 1977, when I flew to California to track down and … WebOptical Craftsman 4.5" Price ($USD): ($135 in 1965) Type: Newtonian: Attributes: Go-To PEC: Aperture: 108mm (4.3") f Ratio: f/10: Focal Length: 1079mm: Finder: 6x30: Electric Power: … can sleep cure headaches