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Large Altazimuth Telescope

(6 meter reflector telescope in Russia)

The Large Altazimuth Telescope (BTA-6) is a 6m reflector telescope in southern Russia, that began operation in 1975 and was the world's largest Optical telescope until Keck in 1990. It has a monolithic mirror and is of the Ritchey-Chrétien telescope design. The current mirror was installed in 1978 and has problems that reduce its performance.


Referenced by:
Hale Telescope
monolithic mirror
segmented mirror