On November 13, 1989, the largest telescope of China and the Far East-the 2.16 metre telescope-was formally opened to the public at Xinglong Station of Beijing Astronomical Observatory. The scheme was proposed in earl...On November 13, 1989, the largest telescope of China and the Far East-the 2.16 metre telescope-was formally opened to the public at Xinglong Station of Beijing Astronomical Observatory. The scheme was proposed in early 1958, and began to carry out in 1974. The key component, a 3-ton concave hyperboloidal main mirror, is made of V02 type cervit with its diameter of 2.2 m, clear aperture of 2,16 m and its focal length of 6.48 m.展开更多
文摘On November 13, 1989, the largest telescope of China and the Far East-the 2.16 metre telescope-was formally opened to the public at Xinglong Station of Beijing Astronomical Observatory. The scheme was proposed in early 1958, and began to carry out in 1974. The key component, a 3-ton concave hyperboloidal main mirror, is made of V02 type cervit with its diameter of 2.2 m, clear aperture of 2,16 m and its focal length of 6.48 m.
