Design of vertical alignment for TMC space camera

Jiayi Chen; Haichao Wang; Bin Li; Tengfei Huo

doi:10.1117/12.2547603

18 December 2019 Design of vertical alignment for TMC space camera

Jiayi Chen, Haichao Wang, Bin Li, Tengfei Huo

Proceedings Volume 11341, AOPC 2019: Space Optics, Telescopes, and Instrumentation; 113411O (2019) https://doi.org/10.1117/12.2547603
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China

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.

Citation Download Citation

Jiayi Chen, Haichao Wang, Bin Li, and Tengfei Huo "Design of vertical alignment for TMC space camera", Proc. SPIE 11341, AOPC 2019: Space Optics, Telescopes, and Instrumentation, 113411O (18 December 2019); https://doi.org/10.1117/12.2547603

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KEYWORDS

Mirrors

Cameras

Wavefronts

Optical alignment

Image quality

Monochromatic aberrations

Finite element methods

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