看LAMOST的头像上有，来自LAMOST官网：www.lamost.org/
大天区面积多目标光纤光谱天文望远镜
The Large Sky Area Multi-Object Fiber Spectroscopic Telescope
大天区面积多目标光纤光谱天文望远镜（LAMOST)是一架横卧南北方向的中星仪式反射施密特望远镜。应用主动光学技术控制反射改正板，使它成为大口径兼大视场光学望远镜的世界之最。由于它的大口径，在曝光1.5小时内可以观测到暗达20.5等的天体。而由于它的大视场，在焦面上可以放置四千根光纤，将遥远天体的光分别传输到多台光谱仪中，同时获得它们的光谱，成为世界上光谱获取率最高的望远镜。它将安放在国家天文台兴隆观测站。项目投资2.35亿元。它将成为我国天文学在大规模光学光谱观测中，在大视场天文学研究上，居于国际领先的地位。
The Large Sky Area Multi-Object Fiber Spectroscopic Telescope
The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) project as one of the National Major Scientific Projects undertaken by the Chinese Academy of Science. LAMOST is a quasi-meridian reflecting Schmidt telescope laid down on the ground with its optical axis fixed in the meridian plane. The aperture of LAMOST is 4m, enabling it to obtain the spectra of objects as faint as down to 20m.5 with an exposure of 1.5 hour. Its focal plane is 1.75m in diameter, corresponding to a 5° field of view, may accommodate as many as 4000 optical fibers. So the light from 4000 celestial objects will be led into a number of spectrographs simultaneously. Thus the telescope will be the one that possesses the highest spectrum acquiring rate in the world.
LAMOST adopts the active optics technique both for thin mirror and segmented mirror on the Schmidt corrector MA, as well as the parallel controllable fiber positioning system. With these new concepts and design, LAMOST is expected to be a unique astronomical instrument in combining a large clear aperture and wide field of view.
The engineering of LAMOST consists of eight subsystems, optic system, active optics and mirror supporting system, mounting and tracking system, telescope control system, focal plane instruments, telescope enclosure, observatory control and data processing, and input catalogue and survey strategy. The project will come into operation at the end of 2007.
The telescope will be located at the Xinglong Observing Station of National Astronomical Observatories, Chinese Academy of Sciences. As a national facility, LAMOST will be opened to the whole Chinese astronomical community. Along with the completion of the construction at the beginning of the 21st century, LAMOST will bring Chinese astronomy to a leading position in the large scale observations of optical spectra, and in the research field of wide field astronomy. |
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显身卡
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