Low-order AO system in LAMOST | |
Xiangyan Yuan ; Xiangqun Cui ; Genrong Liu ; Yong Zhang ; Yongjun Qi | |
2008-06-28 | |
会议日期 | 2006-5-24 |
会议地点 | Orlando, FL |
关键词 | LAMOST ground seeing low-order aberration deformable mirror |
卷号 | 6272 |
期号 | 6272 |
页码 | Vol.6272 3O-1-8 |
英文摘要 |
The large sky area multi-object fiber spectroscopic telescope (LAMOST) is a special reflecting Schmidt telescope with its main optical axis on the meridian plane tilted by an angle of 25º to the horizontal. The clear aperture is 4m, working in optical band. The light path is 60m long when working in observing mode and it will be doubled if work in autocollimation mode. So the image quality is affected clearly by the ground seeing and the dome seeing. In order to improve the seeing condition of the long light path, we enclosed the spherical primary and the focus unit in a tunnel enclosure and cooled the tunnel. This is an effective but passive method. Corresponding experiments and simulations show the main part of the aberrations caused by the ground seeing and dome seeing is slowly changed low order items such as tip-tilt, defocus, astigmatism, coma and spherical aberration. Thus we plan to develop the low-order AO system based on the low-cost 37channel OKO deformable mirror for the telescope to better the ground seeing and the dome seeing, not aimed to reach diffraction limited image. This work is being carried on now. |
会议主办者 | The International Society for Optical Engineering |
会议录 | Advances in Adaptive Optics II |
会议录出版者 | SPIE |
学科主题 | 郭守敬望远镜(LAMOST) ; 主动光学 |
内容类型 | 会议论文 |
源URL | [http://ir.niaot.ac.cn/handle/114a32/444] |
专题 | 南京天文光学技术研究所_中科院南京天光所知识成果_会议论文 南京天文光学技术研究所_望远镜新技术研究室_会议论文 |
推荐引用方式 GB/T 7714 | Xiangyan Yuan,Xiangqun Cui,Genrong Liu,et al. Low-order AO system in LAMOST[C]. 见:. Orlando, FL. 2006-5-24. |
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