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Proceedings Paper

Manufacturing of the (phi)500-mm F/2 ellipsoid mirror
Author(s): Xinnan Li; Junhua Pan; Xingtao Liu; Lijun Yuan; Zili Xia
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Paper Abstract

An ellipsoid mirror with Φ500 mm aperture has been successfully manufactured by NAIRC. The parameters of the mirror are as follows: diameter is Φ500 mm, radius of curvature is 1996 mm, conic constant k=-0.9545, requirements of surface accuracy are λ/10 (P-V) and λ/40 (RMS), (λ=632.8 nm). Based on the surface type, three kinds of test optics are designed. The errors of the elements in the testing optical path are analyzed. The small tools are used to figure the asphericity of the mirror. Finally surface accuracy of λ/10 (P-V) and λ/50 (RMS) are reached.

Paper Details

Date Published: 6 October 2000
PDF: 4 pages
Proc. SPIE 4231, Advanced Optical Manufacturing and Testing Technology 2000, (6 October 2000); doi: 10.1117/12.402767
Show Author Affiliations
Xinnan Li, Nanjing Astronomical Instruments Research Ctr. (China)
Junhua Pan, Nanjing Astronomical Instruments Research Ctr. (China)
Xingtao Liu, Nanjing Astronomical Instruments Research Ctr. (China)
Lijun Yuan, Nanjing Astronomical Instruments Research Ctr. (China)
Zili Xia, Nanjing Astronomical Instruments Research Ctr. (China)


Published in SPIE Proceedings Vol. 4231:
Advanced Optical Manufacturing and Testing Technology 2000
Li Yang; Harvey M. Pollicove; Qiming Xin; James C. Wyant, Editor(s)

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