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Proceedings Paper

Fabrication of 1.8m standard spherical mirror
Author(s): Jun Yu; Shidong Shen; Junhe Pan; Yijiang Mao; Yongji Mu; Mingyong Hu
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Paper Abstract

Ritchey-Common test of the large flatness is an effective method, which requires a larger aperture standard spherical mirror. It’s very difficult for manufacture of large-aperture spherical mirror in the area of optical fabrication. The producing technology of the large-aperture standard spherical mirror with aperture of 1.8m is mainly stated in this paper. The solutions to solve the problems during manufacture are discussed, and the attentions during production are concluded. To offset the gravity effect and ensure the surface deformation satisfy the design requirements, the mechanic support structure including hammer and floating support of spherical mirror are illustrated in brief. At last, the analysis and data of measurement given by 4D interferometer satisfy the technical indicators.

Paper Details

Date Published: 15 October 2012
PDF: 8 pages
Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 84151A (15 October 2012); doi: 10.1117/12.977931
Show Author Affiliations
Jun Yu, Nanjing Astronomical Instrument Research Ctr. (China)
Shidong Shen, Nanjing Astronomical Instrument Research Ctr. (China)
Graduate School of the Chinese Academy of Sciences (China)
Junhe Pan, Nanjing Astronomical Instrument Research Ctr. (China)
Graduate School of the Chinese Academy of Sciences (China)
Yijiang Mao, Nanjing Astronomical Instrument Research Ctr. (China)
Graduate School of the Chinese Academy of Sciences (China)
Yongji Mu, Nanjing Astronomical Instrument Research Ctr. (China)
Graduate School of the Chinese Academy of Sciences (China)
Mingyong Hu, Nanjing Astronomical Instrument Co. Ltd. (China)


Published in SPIE Proceedings Vol. 8415:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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