Optimization analysis of primary mirror in large aperture telescope based on workbench

Zhengsen Feng; Guomin Wang

doi:10.1117/12.2199709

8 October 2015 Optimization analysis of primary mirror in large aperture telescope based on workbench

Zhengsen Feng, Guomin Wang

Proceedings Volume 9678, AOPC 2015: Telescope and Space Optical Instrumentation; 96780Y (2015) https://doi.org/10.1117/12.2199709
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

With the diameter increasing for large aperture telescope primary mirror, the gravity caused by the increased of surface size will directly affect the quality of optical imaging, the adjustment of large aperture primary mirror will be frequent according to the requirement of observation. As the angle and the azimuth’s transformation of primary mirror influences the surface shape accuracy immediately, the rational design of the primary mirror supporting structure is of crucial importance. Now the general method is to use ANSYS APDL programming, which is inconvenient and complex to fit for the different components, the calculation require much time and the analysis is lack of efficient. Taking the diameter of 1.12 m telescope primary mirror as the research objection, the paper combine the actual design parameters of SONG telescope, respectively using ANSYS WORKBENCH to employ the primary mirror axial and lateral support model in finite element method, the optimal solution is obtained by optimization design and the change rule of mirror surface deformation under inclined condition is studied. The optimization results according with the requirements of the primary mirror comprehensive error proves that the optimization analysis method is available and applicable.

Citation Download Citation

Zhengsen Feng and Guomin Wang "Optimization analysis of primary mirror in large aperture telescope based on workbench", Proc. SPIE 9678, AOPC 2015: Telescope and Space Optical Instrumentation, 96780Y (8 October 2015); https://doi.org/10.1117/12.2199709

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KEYWORDS

Mirrors

Telescopes

Finite element methods

Optimization (mathematics)

Objectives

Optical instrument design

Process modeling

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