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Design of vertical alignment for TMC space camera
Author(s): Jiayi Chen; Haichao Wang; Bin Li; Tengfei Huo
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Paper Abstract

With the increasing demand for high resolution earth observation and the development of deep space exploration and scientific research activities, the focal length of space camera is getting longer and longer, and the aperture of space camera keeps increasing. When a large-aperture space camera is mounted on the ground, the figure and position of the mirror will change due to the gravity effect on the mirror and its supporting structure. The three-mirror coaxial (TMC) space camera has certain structural symmetry. In order to improve the reliability and efficiency, the optical axis vertical alignment technology is widely used in the world. The main content of this paper is to elaborate the design process of optical axis vertical alignment scheme for Φ1.3m TMC space camera, as well as the test verification process and results. The on-orbit wavefront of the central field of view is 0.050 λ, and the on-orbit wavefront of the edge field of view is 0.064 λ and 0.059 λ. The camera wavefront meets the design requirements, and the setting factor is better than 0.94. The optical axis vertical alignment scheme of optical axis of Φ1.3m TMC space camera is verified.

Paper Details

Date Published: 18 December 2019
PDF: 8 pages
Proc. SPIE 11341, AOPC 2019: Space Optics, Telescopes, and Instrumentation, 113411O (18 December 2019); doi: 10.1117/12.2547603
Show Author Affiliations
Jiayi Chen, Beijing Institute of Space Mechanics and Electricity (China)
Haichao Wang, Beijing Institute of Space Mechanics and Electricity (China)
Bin Li, Beijing Institute of Space Mechanics and Electricity (China)
Tengfei Huo, Beijing Institute of Space Mechanics and Electricity (China)


Published in SPIE Proceedings Vol. 11341:
AOPC 2019: Space Optics, Telescopes, and Instrumentation
Suijian Xue; Xuejun Zhang; Carl Anthony Nardell; Ziyang Zhang, Editor(s)

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