Giant Science Steering Mirror Prototype Sub-aperture Testing Error Analysis
文献类型：期刊论文
| 作者 | An, Qi-Chang; Zhang, Jing-Xu; Yang, Fei; Zhao, Hong-Chao |
| 刊名 | Guangzi Xuebao/Acta Photonica Sinica
 |
| 出版日期 | 2018 |
| 卷号 | 47期号:1 |
| 关键词 | Optical testing Error analysis Mirrors Optical telescopes Reliability analysis Rigid structures Signal to noise ratio Turbulence |
| ISSN号 | 10044213 |
| DOI | 10.3788/gzxb20184701.0112004 |
| 英文摘要 | Giant Steerable Science Mirror (GSSM) is largest flat mirror as the tertiary mirror of Thirty Meter Telescope (TMT).To evaluate the performance of GSSM under gravity load, the mirror figure needs to be tested. Erorr analysis is the most imortant step for the reliability of metrology. For its large size and plate character, Sub aperture stitching will be used to reach the full aperture figure. GSSMP is the prototype of GSSM. Research on GSSMP sub aperture testing error will help understanding and learning how to build GSSM. The stitching error is divided into two parts: rigid body location error and middle frequency turbulence. According to each part, theoretical analysis and experience have been done drawing the conclusion that the algorithm with probable marks will suppress rigid body error efficiently and the influence of the turbulence is achieved by smaller aperture system and interferometer. What is more, stitching order is also related to stitching order. Using one reference aperture and fitting other apertures onto it allow introducing least error to the final result. All the performance is specified by Slope RMS, which is required by TMT.After fitting, Shift error is 10-6rad, Piston error is 10-6rad, Tip/tilt error is 10-6rad and Air turbulence is 0.04 rad. The error involved by the rigid body is ignorable, and the air turbulence is 3nm in RMS. By Slope MS, the reqiured metric of TMT, the influence of stitching error will be discussed and the orders chosen here did not increase the Signal to Noise ratio significantly in the figure at the level of 2%. Here the conclution was drawed that feature will help a lot in lowering the stitching error. 2018, Science Press. All right reserved. |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/60674]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | An, Qi-Chang,Zhang, Jing-Xu,Yang, Fei,et al. Giant Science Steering Mirror Prototype Sub-aperture Testing Error Analysis[J]. Guangzi Xuebao/Acta Photonica Sinica,2018,47(1). |
| APA | An, Qi-Chang,Zhang, Jing-Xu,Yang, Fei,&Zhao, Hong-Chao.(2018).Giant Science Steering Mirror Prototype Sub-aperture Testing Error Analysis.Guangzi Xuebao/Acta Photonica Sinica,47(1). |
| MLA | An, Qi-Chang,et al."Giant Science Steering Mirror Prototype Sub-aperture Testing Error Analysis".Guangzi Xuebao/Acta Photonica Sinica 47.1(2018). |
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