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Design of SiC mirror subsystem of a space-based astronomy telescope
Feng, Liang-Jie; Ding, Jiao-Teng; Zou, Gang-Yi
2019
Conference Name9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, AOMATT 2018
Source Publication9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Volume10837
Conference Date2018-06-26
Conference PlaceChengdu, China
PublisherSPIE
Contribution Rank1
AbstractA 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.
Department空间光学应用研究室
DOI10.1117/12.2504931
Indexed ByEI
ISBN9781510623163
Language英语
ISSN0277786X;1996756X
EI Accession Number20190506432450
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Document Type会议论文
Identifierhttp://ir.opt.ac.cn/handle/181661/31211
Collection空间光学应用研究室
AffiliationXI'AN Institute of Optics and Precision Mechanics of CAS, Xi'an, Shanxi; 710119, China
Recommended Citation
GB/T 7714
Feng, Liang-Jie,Ding, Jiao-Teng,Zou, Gang-Yi. Design of SiC mirror subsystem of a space-based astronomy telescope[C]:SPIE,2019.
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