Primary mirror segmentation for large optical telescopes: an inverse map projection approach | |
Zheng Y(郑奕); Tang LF(汤丽峰); Liang B(梁斌); Li Y(李颖) | |
刊名 | Applied Optics |
2021-07 | |
卷号 | 60期号:21页码:6015-6022 |
英文摘要 | Large segmented-mirror telescopes are powerful tools used in modern astronomy. Segmentation of the primary mirror is important for support design, mirror fabrication, and construction cost reduction. A curvature study showed that a primary mirror with a solid angle of less than $\pi /{{6}}$ can be well divided by projecting identical hexagonal tilings onto a curved surface. Three approaches, based on map projection, are presented. The conformal method, preserving the angle locally, provides optimal regularity. The equal-area algorithm generates a partition having zero area variation. The equidistant projection minimizes the circumscribed diameter of the segments. These approaches are unified by a newly proposed compromise approach, which provides the necessary adjustment range for individual preferences. The performances of the three approaches are numerically verified using the Thirty Meter Telescope model. This study verifies the effectiveness of the scaling rule and sheds light on the mechanism of primary mirror segmentation. |
学科主题 | 天文技术与方法 |
内容类型 | 期刊论文 |
源URL | [http://ir.niaot.ac.cn/handle/114a32/1948] |
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_期刊论文 |
作者单位 | 南京天文光学技术研究所 |
推荐引用方式 GB/T 7714 | Zheng Y,Tang LF,Liang B,et al. Primary mirror segmentation for large optical telescopes: an inverse map projection approach[J]. Applied Optics,2021,60(21):6015-6022. |
APA | Zheng Y,Tang LF,Liang B,&Li Y.(2021).Primary mirror segmentation for large optical telescopes: an inverse map projection approach.Applied Optics,60(21),6015-6022. |
MLA | Zheng Y,et al."Primary mirror segmentation for large optical telescopes: an inverse map projection approach".Applied Optics 60.21(2021):6015-6022. |
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