2004•Optical TechniqueRequires access

Design of a catadioptric system for star sensors with wide field of view

Weimin Shen

Abstract

A catadioptric system for star sensors composed of the inverse Cassegrain configuration and a compensator is introduced. This system is composed of one spherical mirror, one aspherical mirror, two spherical lenses and one aspherical lens with the same glass, and has advantages of wide field of view, high relative aperture . The targets and idea to design this system are given. And the third order aberration formulas of the catadioptric system and the method to calculate the initial structure parameters are presented. After optimization, the full field of view, entrance pupil diameter and relative aperture respectively reach 20°, 36.3mm and 1∶12. Finally, the design result and its performance are evaluated.

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Available abstract

Key concepts: Catadioptric system, Cassegrain reflector, Aperture (computer memory), Lens (geology), Exit pupil, Optics, Entrance pupil, Physics