Active optics system prototype applied on a passive large aperture off-axis LEO space telescope

Yang Sun; Kejun Wang; Wei Wang; Pingwei Zhou; Zhiyuan Gu; Jihong Dong; Shuyan Xu

doi:10.1117/1.OE.57.11.115102

19 November 2018 Active optics system prototype applied on a passive large aperture off-axis LEO space telescope

Yang Sun, Kejun Wang, Wei Wang, Pingwei Zhou, Zhiyuan Gu, Jihong Dong, Shuyan Xu

Author Affiliations +

Optical Engineering, Vol. 57, Issue 11, 115102 (November 2018). https://doi.org/10.1117/1.OE.57.11.115102

Abstract

A large aperture space telescope with a passive structure with high stiffness and thermal stability can maintain a good image quality in a large span of disturbance. However, for the proposed more stringent requirements, it is beneficial to add active optics to the conventional design. In these telescopes, the off-axis design provides more design variables than the coaxis system and also provides greater adjusting ability for the active optics. We introduce an active optics system prototype deployed on an off-axis space telescope working at low Earth orbit. By adjusting the low-order aberrations of the primary mirror shape and adjusting the positions and attitudes of certain mirrors and the focal plane, the optical system’s image quality corrupted by gravity discharge and temperature variation is increased to the undegraded level in the average sense in the full field of view.

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Yang Sun, Kejun Wang, Wei Wang, Pingwei Zhou, Zhiyuan Gu, Jihong Dong, and Shuyan Xu "Active optics system prototype applied on a passive large aperture off-axis LEO space telescope," Optical Engineering 57(11), 115102 (19 November 2018). https://doi.org/10.1117/1.OE.57.11.115102

Received: 18 August 2018; Accepted: 23 October 2018; Published: 19 November 2018

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