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Proceedings Paper

Compact optical imaging system for star tracker with long focal length and perfect thermal adaptability
Author(s): Yiqun Ji; Rongbao Shi; Hucheng He; Li Xu; Xuxia Liu; Yangming Jin; Weimin Shen
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Paper Abstract

A star tracker optical imaging system is designed for Polaris detection. System parameters determination and its configuration chosen method are given. Based on Macsutov-Cassegrain configuration, the system is designed imagery tele-centric. It works at 0.6μm~1.1μm waveband and the view field is 0.5 degree. The tube length of the system is 80mm, which is only 8 percent of its focal length. Its MTF reaches diffraction limit and the spot diagrams are quit near a circle. About 80% of the energy is encircled in a CCD pixel. And the distortion is less than 1%. Moreover, it has a perfect thermal adaptability from -40℃ to 60℃.

Paper Details

Date Published: 26 November 2012
PDF: 6 pages
Proc. SPIE 8557, Optical Design and Testing V, 855719 (26 November 2012); doi: 10.1117/12.999395
Show Author Affiliations
Yiqun Ji, Soochow Univ. (China)
Rongbao Shi, Soochow Univ. (China)
Hucheng He, Soochow Univ. (China)
Li Xu, Soochow Univ. (China)
Xuxia Liu, Soochow Univ. (China)
Yangming Jin, Soochow Univ. (China)
Weimin Shen, Soochow Univ. (China)


Published in SPIE Proceedings Vol. 8557:
Optical Design and Testing V
Yongtian Wang; Chunlei Du; Hong Hua; Kimio Tatsuno; H. Paul Urbach, Editor(s)

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