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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
The Coma Corrector of D.M.Maksutov
 Rail, Zdeněk ; Jareš, Daniel ; Vápenka, David
The simpliest coma corrector of the paraboloidal mirror is a singlet-meniscus of Maksutov. This corrector placed into converging beam of a paraboloidal mirror corrects coma and saves stigmatic image of the system on its optical axis. The corrector can be easily to built and enlarges the field of view about three times.
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The Catadioptric System of G.M. Popov of the Observatory of Úpice
 Rail, Zdeněk ; Melich, Zbyněk
During the Sixties of the Twentieth Century series of two-mirror catadioptric telescopes were designed with a correcting lens in front of their secondary mirror. One of the first designers of these devices was P.P. Argunov. His optical designs were further developed by G.M. Popov, J. Klevcov and other opticians. In 2005 one telescope of a Popov system of diameter 305 mm was manufactured in the Development Optical Workshop of Academy of Sciences of Czech Republic /now Institute of Plasma Physics of AS CR,v.v.i.-Toptec/ in Turnov. The telescope was intended to substitute an older Maksutov-Cassegrain telescope of diameter of 260 mm of the Observatory in Úpice which required the reconstruction. In this paper we present an optical design of the Popov´s system of the Observatory in Úpice and compare it with an equal commercial Schmidt-Cassegrain telescope and further devices.\n
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