28 February 2017 The influence of temperature and pressure on primary mirror surface figure and image quality of the 1.2m colorful Schlieren system
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Proceedings Volume 10256, Second International Conference on Photonics and Optical Engineering; 102565D (2017) https://doi.org/10.1117/12.2247935
Event: Second International Conference on Photonics and Optical Engineering, 2016, Xi'an, China
Abstract
In this paper, a colorful schlieren system without any protecting windows was introduced which results in that the 1.2m primary mirror would directly be confronted with the pressure and temperature variation from the wind tunnel test. To achieve a good schlieren image under the wind tunnel test working condition of a wide temperature fluctuation range (-10° to 50°) as well as a pressure (2kPa), a new flexible support method of the primary mirror was strategically designed. A finite element model of the primary mirror combined with its supporting structures was built up to approach the surface figure of the primary mirror under the complex working conditions as gravity, temperature variation, and pressure. The schlieren images due to the change of the primary mirror surface figure were simulated by Light-tools software. It was found that the temperature changing and pressure would lead to the variation of the surface figure of the primary mirror surface figure and therefore, results in the changing of the quality of simulated schlieren images.
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Songbo Xu, Peng Wang, Lei Chen, Jing Wang, Yong-jun Xie, "The influence of temperature and pressure on primary mirror surface figure and image quality of the 1.2m colorful Schlieren system", Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 102565D (28 February 2017); doi: 10.1117/12.2247935; https://doi.org/10.1117/12.2247935
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