The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) is a meridian reflecting Schmidt telescope with a clear aperture of four meters, a focal length of 20 meters and a field of view of five degrees...The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) is a meridian reflecting Schmidt telescope with a clear aperture of four meters, a focal length of 20 meters and a field of view of five degrees. By using active optics technique to control its reflecting corrector, the LAMOST is made a unique astronomical instrument in combining a large aperture with a wide field of view. The available large focal plane of 1.75 meter in diameter can accommodate up to 4,000 fibers,展开更多
In this article, we report the principle and conceptual design of a fundamentally different technology in fabricating high precision aberration free optical devices. The tip-tilt of facet in a mirror array is produced...In this article, we report the principle and conceptual design of a fundamentally different technology in fabricating high precision aberration free optical devices. The tip-tilt of facet in a mirror array is produced by digitally controlled line-tilts of rows and columns. It has not only provided a cost-effective designing methodology in optical physics but also led to a much finer precision of 1 mili arc sec or less. As examples of the application of the proposed digitalised optics, two case studies have been given: a 10 m Schmidt telescope (off-axis) and an 8 m Cassegrain telescope (on-axis).展开更多
关于天文望远镜的历史,有几本书很值得一读。例如,《望远镜的历史》(The History of the Telescope)是1950年代出版的一部经典之作。有两部《洞察宇宙的眼睛》(Eyes on the Universe),是两位享誉世界的科普大家的作品,均极具可...关于天文望远镜的历史,有几本书很值得一读。例如,《望远镜的历史》(The History of the Telescope)是1950年代出版的一部经典之作。有两部《洞察宇宙的眼睛》(Eyes on the Universe),是两位享誉世界的科普大家的作品,均极具可读性。而《观天巨眼——天文望远镜的400年》是我国天文学家兼天文普及家温学诗和吴鑫基的最新力作.也是国人详述望远镜发展史的第一部原创作品。《望远镜:它的历史、技术和未来》(The Telescope:Its History,Technology,and Future)是近来颇有影响的一部英文著作。展开更多
文摘The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) is a meridian reflecting Schmidt telescope with a clear aperture of four meters, a focal length of 20 meters and a field of view of five degrees. By using active optics technique to control its reflecting corrector, the LAMOST is made a unique astronomical instrument in combining a large aperture with a wide field of view. The available large focal plane of 1.75 meter in diameter can accommodate up to 4,000 fibers,
文摘In this article, we report the principle and conceptual design of a fundamentally different technology in fabricating high precision aberration free optical devices. The tip-tilt of facet in a mirror array is produced by digitally controlled line-tilts of rows and columns. It has not only provided a cost-effective designing methodology in optical physics but also led to a much finer precision of 1 mili arc sec or less. As examples of the application of the proposed digitalised optics, two case studies have been given: a 10 m Schmidt telescope (off-axis) and an 8 m Cassegrain telescope (on-axis).
文摘关于天文望远镜的历史,有几本书很值得一读。例如,《望远镜的历史》(The History of the Telescope)是1950年代出版的一部经典之作。有两部《洞察宇宙的眼睛》(Eyes on the Universe),是两位享誉世界的科普大家的作品,均极具可读性。而《观天巨眼——天文望远镜的400年》是我国天文学家兼天文普及家温学诗和吴鑫基的最新力作.也是国人详述望远镜发展史的第一部原创作品。《望远镜:它的历史、技术和未来》(The Telescope:Its History,Technology,and Future)是近来颇有影响的一部英文著作。