Compact Optical Imaging System for Star Tracker with Long focal length and perfect thermal adaptability

被引：0

作者：

Ji Yiqun ^{[1
]}

Shi Rongbao ^{[1
]}

He Hucheng ^{[1
]}

Xu Li ^{[1
]}

Liu Xuxia ^{[1
]}

Jin Yangming ^{[1
]}

Shen Weimin ^{[1
]}

机构：

[1] Soochow Univ, Educ Minist China, Key Lab Adv Opt Mfg Technol Jiangsu Prov, Inst Modern Opt Technol, Suzhou 215006, Jiangsu, Peoples R China

来源：

OPTICAL DESIGN AND TESTING V | 2012年 / 8557卷

关键词：

star tracker; optical design; Macsutov-Cassegrain type; VNIR waveband; long focal length; imagery tele-centric;

D O I：

10.1117/12.999395

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 0.6 mu m similar to 1.1 mu m 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 degrees C to 60 degrees C.

引用

页数：6

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