CCAT-prime: a novel telescope for sub-millimeter astronomy
CCAT-prime: a novel telescope for sub-millimeter astronomy
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CCAT-prime：用于亚毫米天文学的新型望远镜
DOI：
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发表时间：
2018
期刊：
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通讯作者：
E. Vavagiakis
中科院分区：
文献类型：
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作者：
S. Parshley;Jörg Kronshage;James Blair;T. Herter;M. Nolta;G. Stacey;A. Bazarko;F. Bertoldi;R. Bustos;D. Campbell;S. Chapman;N. Cothard;M. Devlin;J. Erler;M. Fich;P. Gallardo;R. Giovanelli;U. Graf;Scott Gramke;M. Haynes;R. Hills;M. Limon;J. Mangum;J. McMahon;M. Niemack;T. Nikola;M. Omlor;D. Riechers;K. Steeger;J. Stutzki;E. Vavagiakis
CCAT主望远镜是一个6米口径的交叉Dragone望远镜，设计用于毫米和亚毫米波长观测。它将位于海拔5600米的地方，就在智利阿塔卡马高原地区Cerro Chajnantor山顶的下方。该望远镜的无遮挡光学系统在一个大而平的焦平面上提供了近8度的视场，使其能够适应当前和未来的仪器，其波长小于1毫米，衍射限制光束小于100k。这个支架是一个新颖的设计，铝瓦反射镜嵌套在望远镜结构内。仰角外壳有一个集成的百叶窗，可以封闭镜子，保护它们免受恶劣天气的影响。该望远镜的设计是在其标称的15年寿命内共同主持多个仪器。它将远程操作，由于山上恶劣的工作条件，需要最少的维护和现场活动。该设计在反射镜支撑结构中使用了镍铁合金（因瓦合金）和碳纤维增强聚合物（CFRP）材料，实现了相对温度不敏感的安装。我们讨论的要求，规格，关键的设计元素，和预期的性能CCAT总理望远镜。该望远镜由CCAT天文台公司建造，一个由大学组成的国际合作组织。更多关于CCAT和CCAT主望远镜的信息可以在www.ccatobservator.org上找到。
The CCAT-prime telescope is a 6-meter aperture, crossed-Dragone telescope, designed for millimeter and sub-millimeter wavelength observations. It will be located at an altitude of 5600 meters, just below the summit of Cerro Chajnantor in the high Atacama region of Chile. The telescope’s unobscured optics deliver a field of view of almost 8 degrees over a large, flat focal plane, enabling it to accommodate current and future instrumentation fielding <100k diffraction-limited beams for wavelengths less than a millimeter. The mount is a novel design with the aluminum-tiled mirrors nested inside the telescope structure. The elevation housing has an integrated shutter that can enclose the mirrors, protecting them from inclement weather. The telescope is designed to co-host multiple instruments over its nominal 15 year lifetime. It will be operated remotely, requiring minimum maintenance and on-site activities due to the harsh working conditions on the mountain. The design utilizes nickel-iron alloy (Invar) and carbon-fiber-reinforced polymer (CFRP) materials in the mirror support structure, achieving a relatively temperature-insensitive mount. We discuss requirements, specifications, critical design elements, and the expected performance of the CCAT-prime telescope. The telescope is being built by CCAT Observatory, Inc., a corporation formed by an international partnership of universities. More information about CCAT and the CCAT-prime telescope can be found at www.ccatobservatory.org.