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结合中国的实际情况提出了一种新的中国 2 1世纪的 1 0米光学 /红外望远镜的方案 .它是属于一种非常规概念设计的望远镜 .这种新的大望远镜方案吸收了或主要参考了Arecibo射电望远镜、美国的HobbyEberly 9米望远镜和LAMOST方案的前身—光谱巡天望远镜方案 .它的主镜是六角形子镜拼接成的球面 ,在观测过程中主镜不动 ,由焦面的改正镜做跟踪 ,造价约为同样口径的常规设计望远镜的五分之一 ,并能满足绝大部分天文观测的需要 .这种望远镜的方案也与以上提到的那些现有的非常规概念设计的大望远镜有不同 :这架望远镜的焦比是 1 .7,视场约可达 6- 8角分 ,适合于做高分辨率的天文光谱和像的观测工作 ;它是一架中星仪式望远镜 ,换天区时通过改变主镜的高度角来实现 ,观测天区 (赤纬变化范围 )可达 1 0 0°,但只有一块大口径的主镜 .这种 1 0米口径望远镜的球面主镜由 91块对径长为 1 .2米的六角形子镜组成 .在观测可见光波段时其主镜的 91块子镜不需要共相 ,只需共焦 .但在观测红外波段时 ,就要求子镜共相 .由于望远镜的重力 ,热变形引起的子镜不满足共焦和共相的偏差 ,可根据LAMOST以及国外拼接镜面大望远镜的经验解决 .因此 ,该望远镜的方案是一种投资少 (造价约为 1 30 0 - 2 0 0 0万美元 ) ,技术风险也小的?
Based on the actual situation in China, a new 10-meter optical / infrared telescope of the 21st century in China was proposed, which belongs to an unconventional concept telescope, which absorbs or mainly references Arecibo radio telescope, the United States HobbyEberly 9 m telescope and LAMOST program predecessor - spectrum patrol telescope program. Its main mirror is a hexagonal mirror spliced into the sphere, the main mirror in the observation process does not move, the correction by the focal plane The mirror is tracked at a cost of about one-fifth that of a conventional design telescope of the same caliber and meets the needs of most astronomical observations. The telescope solution is also compatible with the existing unconventional concepts mentioned above The telescope is different: the telescope's focal ratio is 1.7, the field of view of about 6-8 cents, suitable for high-resolution astronomical spectroscopy and image observation; it is a star ceremony telescope , Change the sky by changing the height of the main mirror to achieve the sky, the observed area (declination range) up to 1 0 0 °, but only a large diameter of the main mirror. This 10-meter telescope spherical The mirror is composed of 91 pieces of hexagonal sub-mirrors with a diameter of 1.2 meters.When observing the visible light band, 91 sub-mirrors of the main mirror do not need to be in phase and need only confocal, but when observing the infrared wave band, As the telescope gravity, thermal deformation caused by the sub-mirror does not meet the confocal and common-phase deviation, according to LAMOST and foreign splicing mirror telescope experience.Therefore, the telescope program is an investment Less (cost about 130 to 200 million US dollars), the technical risk is also small?