Design and simulation of the active support system for a 1.2m meniscus primary mirror

Haitao Liu; Bin Fan; Zhige Zeng; Xiaojin Li; Hongqiao Wang; Rong Liu

doi:10.1117/12.2187042

17 July 2015 Design and simulation of the active support system for a 1.2m meniscus primary mirror

Haitao Liu, Bin Fan, Zhige Zeng, Xiaojin Li, Hongqiao Wang, Rong Liu

Proceedings Volume 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015); 95240R (2015) https://doi.org/10.1117/12.2187042
Event: International Conference on Optical and Photonic Engineering (icOPEN2015), 2015, Singapore, Singapore

Abstract

Thin meniscus primary mirrors with active support have been used successfully in many large telescopes, and also draw attention of many optical fabricators. Because the active support system can correct the low order figure errors, such as astigmatism, coma, trefoil 3^rd astigmatism, the optical fabricators can just focus on to remove high order figure errors. This will shorten the fabrication time. In this paper, we present an active support system for a 1.2m meniscus parabolic primary mirror. It contains 37 axial push-pull force supports, 3 axial fixed points, and 4 lateral restraints. Some basic performance of the active support system is analyzed and the figure error correction capability is also studied based on Zernike modes.

Citation Download Citation

Haitao Liu, Bin Fan, Zhige Zeng, Xiaojin Li, Hongqiao Wang, and Rong Liu "Design and simulation of the active support system for a 1.2m meniscus primary mirror", Proc. SPIE 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015), 95240R (17 July 2015); https://doi.org/10.1117/12.2187042

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