Design of SiC mirror subsystem of a space-based astronomy telescope | |
Feng, Liang-Jie; Ding, Jiao-Teng![]() ![]() | |
2019 | |
会议日期 | 2018-06-26 |
会议地点 | Chengdu, China |
卷号 | 10837 |
DOI | 10.1117/12.2504931 |
英文摘要 | A Φ450mm primary mirror subsystem of a space-based astronomy telescope was designed with mass, optical surface distortion and reflectivity requirement. The open-back primary mirror was made of pressure-less sintering silicon carbide, light-weighted at a ratio of approximately 70%. Three side supporting invar flexure bipods were designed to minimize the assembling stress and the thermal stress. The high reflection was obtained from the optical surface cementite. The mirror weighted 7kg and the reflectivity was 97% after optical polishing. The mirror subsystem was precisely assembled under the strict technical condition. The optical test with interferometer showed that the optical surface distortion is less than 1/40λ rms, which met the critical optical requirements for the primary mirror of the space-based astronomy telescope. © 2019 SPIE. |
产权排序 | 1 |
会议录 | 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
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会议录出版者 | SPIE |
语种 | 英语 |
ISSN号 | 0277786X;1996756X |
ISBN号 | 9781510623163 |
内容类型 | 会议论文 |
源URL | [http://ir.opt.ac.cn/handle/181661/31211] ![]() |
专题 | 西安光学精密机械研究所_空间光学应用研究室 |
作者单位 | XI'AN Institute of Optics and Precision Mechanics of CAS, Xi'an, Shanxi; 710119, China |
推荐引用方式 GB/T 7714 | Feng, Liang-Jie,Ding, Jiao-Teng,Zou, Gang-Yi. Design of SiC mirror subsystem of a space-based astronomy telescope[C]. 见:. Chengdu, China. 2018-06-26. |
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