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Proceedings Paper

A spherical catadioptric telescope system based on Cooke corrector group
Author(s): Jian Zhang; Yusi Kang; Weiqi Liu
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Paper Abstract

To obtain a number of advantages in fabrication, testing and alignment, many designs in which spherical mirrors replace classical Cassegrain-form aspheric mirrors are present in the literature. However, spherical mirrors suffer from substantial spherical aberration and thereby require some form of corrector group. But in this case, the question encountered is that of making the basic optical configuration more complex. In this paper, a new design based on Cooke corrector group is presented for eliminating spherical aberration, which is believed to provide higher performance with less complexity than previous approaches. Besides, the cost and fabrication period will be extremely decreased. The telescope system using corrector group here can achieve good optical performance with f# of 10, full field of 0.5°, obscuration of 1/3 and MTF (Modulation Transfer Function) of 0.48 corresponding to 50@lp/mm.

Paper Details

Date Published: 21 August 2009
PDF: 8 pages
Proc. SPIE 7429, Novel Optical Systems Design and Optimization XII, 74290T (21 August 2009); doi: 10.1117/12.825562
Show Author Affiliations
Jian Zhang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Graduate School of Chinese Academy of Sciences (China)
Yusi Kang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Weiqi Liu, Changchun Institute of Optics, Fine Mechanics and Physics (China)


Published in SPIE Proceedings Vol. 7429:
Novel Optical Systems Design and Optimization XII
R. John Koshel; G. Groot Gregory, Editor(s)

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