| Performance Study of a 1.2 m Active Mirror | |
| Ping Yao; Xuejun Zhang; Junbo Zhang; Yudong Zhang | |
| Volume | 7654 |
| Pages | 765417 (6 pp.) |
| 2010 | |
| Language | 英语 |
| Indexed By | Ei ; ISTP |
| Subtype | 会议论文 |
| Abstract | Active optics is one of the key technologies for constructing modern large telescope. It's necessary to study the performance of an active optics system theoretically in advance. In this paper we built a 1.2 m active thin-mirror model with 36 axial supports and 3 lateral supports. In order to ensure the active optics system and select appropriate force actuators, we carried out following analyses through FEA: the ability of the active optics system to duplicate the first 15 Zernike modes and the first 15 natural resonance modes; mirror deformations before and after active force corrections under gravitational loads; the maximum stresses of the mirror while fitting Zernike modes of 1 micron PV amplitude; requirements of the force accuracy and the maximum load for the force actuators. Through above analyses over the theoretical performance of the 1.2 m active thin-mirror, it can be concluded that: the support system is effective to maintain the mirror surface; the maximum stresses of the mirror while fitting aberrations are within the allowable stress of the glass material; the force resolution is about 0.5 N and the maximum load for the force actuators is about 400 N. As a result fundamentals are set up for constructing a practical active mirror.; Active optics is one of the key technologies for constructing modern large telescope. It's necessary to study the performance of an active optics system theoretically in advance. In this paper we built a 1.2 m active thin-mirror model with 36 axial supports and 3 lateral supports. In order to ensure the active optics system and select appropriate force actuators, we carried out following analyses through FEA: the ability of the active optics system to duplicate the first 15 Zernike modes and the first 15 natural resonance modes; mirror deformations before and after active force corrections under gravitational loads; the maximum stresses of the mirror while fitting Zernike modes of 1 micron PV amplitude; requirements of the force accuracy and the maximum load for the force actuators. Through above analyses over the theoretical performance of the 1.2 m active thin-mirror, it can be concluded that: the support system is effective to maintain the mirror surface; the maximum stresses of the mirror while fitting aberrations are within the allowable stress of the glass material; the force resolution is about 0.5 N and the maximum load for the force actuators is about 400 N. As a result fundamentals are set up for constructing a practical active mirror. |
| Conference Name | Proceedings of the SPIE - The International Society for Optical Engineering |
| Conference Date | 2010 |
| Document Type | 会议论文 |
| Identifier | http://ir.ioe.ac.cn/handle/181551/7748 |
| Collection | 自适应光学技术研究室（八室） |
| Corresponding Author | Ping Yao |
| Affiliation | 中国科学院光电技术研究所 |
| Recommended Citation GB/T 7714 | Ping Yao,Xuejun Zhang,Junbo Zhang,et al. Performance Study of a 1.2 m Active Mirror[C],2010:765417 (6 pp.). |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2010-022.pdf（318KB） | 会议论文 | 开放获取 | CC BY-NC-SA | Application Full Text | ||
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