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Published online by Cambridge University Press: 26 July 2016
The Karl-Schwarzschild-Observatorium, about 15 km away from Jena in the Tautenburg forest at 330 m above sea level, was founded in 1960. The 2m-Universal-Telescope contains three optical systems: Schmidt, Cassegrain and Coudé. The spherical primary mirror consists of Sitall (a Russian ceramic glass).