Support optimization of the ring primary mirror of a 2-m solar telescope
文献类型：会议论文
| 作者 | Yang, Dehua1; Jin ZY(金振宇)2 ; Liu Z(刘忠)2
|
| 出版日期 | 2016 |
| 会议名称 | Conference on Ground-Based and Airborne Telescopes VI |
| 会议日期 | 2016-06-26 |
| 会议地点 | Edinburgh, SCOTLAND, United kingdom |
| 关键词 | solar telescope ring primary mirror support optimization sensitivity estimation |
| 卷号 | 9906 |
| 通讯作者 | Yang, Dehua, Nanjing Univ Aeronaut & Astronaut, Coll Automat Engn, 29 Jiangjun Ave, Nanjing 211106, Jiangsu, Peoples R China. |
| 英文摘要 | A special 2-m Ring Solar Telescope (2-m RST) is to be built by YNAO-Yunnan Astronomical Observatory, Kunming, China. Its distinct primary mirror is distinctively shaped in a ring with an outer diameter of 2.02 m and a ring width of 0.35 m. Careful calculation and optimization of the mirror support pattern have been carried out first of all to define optimum blank parameters in view of performance balance of support design, fabrication and cost. This paper is to review the special consideration and optimization of the support design for the unique ring mirror. Schott zerodur is the prevailing candidate for the primary mirror blank. Diverse support patterns with various blank thicknesses have been discussed by extensive calculation of axial support pattern of the mirror. We reached an optimum design of 36 axial supports for a blank thickness of 0.15 m with surface error of 5 nm RMS. Afterwards, lateral support scheme was figured out for the mirror with settled parameters. A classical push-And-pull scheme was used. Seeing the relative flexibility of the ring mirror, special consideration was taken to unusually set the acting direction of the support forces not in the mirror gravity plane, but along the gravity of the local virtual slices of the mirror blank. Nine couples of the lateral push-pull force are considered. When pointing to horizon, the mirror surface exhibits RMS error of 5 nm with three additional small force couples used to compensate for the predominant astigmatism introduced by lateral supports. Finally, error estimation has been performed to evaluate the surface degradation with introduced errors in support force and support position, respectively, for both axial and lateral supports. Monte Carlo approach was applied using unit seeds for amplitude and position of support forces. The comprehensive optimization and calculation suggests the support systems design meet the technic requirements of the ring mirror of the 2-m RST. © 2016 SPIE. |
| 收录类别 | EI ; CPCI |
| 产权排序 | 第2完成单位 |
| 会议网址 | http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2546161 |
| 会议录 | Proceedings of SPIE - The International Society for Optical Engineering - Ground-Based and Airborne Telescopes VI
 |
| 会议录出版者 | SPIE-INT SOC OPTICAL ENGINEERING |
| 学科主题 | 天文学 |
| 会议录出版地 | 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA |
| 语种 | 英语 |
| ISSN号 | 0277-786X |
| ISBN号 | 978-1-5106-0191-8; 978-1-5106-0192-5 |
| WOS记录号 | WOS:000387731100150 |
| 研究领域[WOS] | Instruments & Instrumentation ; Optics |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9792]  |
| 专题 | 天文技术实验室 云南天文台_抚仙湖太阳观测站 |
| 作者单位 | 1.College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China 2.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, 650216, China |
| 推荐引用方式 GB/T 7714 | Yang, Dehua,Jin ZY,Liu Z. Support optimization of the ring primary mirror of a 2-m solar telescope[C]. 见:Conference on Ground-Based and Airborne Telescopes VI. Edinburgh, SCOTLAND, United kingdom. 2016-06-26.http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2546161. |
入库方式： OAI收割
来源：云南天文台
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