Study of transient behaviors of wavefront error caused by natural convection for improving mirror seeing
文献类型:期刊论文
作者 | Huang SJ(黄善杰)3,4; Wang, Lingxue3; Hu, Xu2; Yuan, Shouzhang2; Xu FY(许方宇)4; Zhao, Jinsong2; Cai, Yi1,3 |
刊名 | Optics Express |
出版日期 | 2023-05-22 |
卷号 | 31期号:11页码:17148-17164 |
ISSN号 | 1094-4087 |
DOI | 10.1364/OE.485223 |
产权排序 | 第2完成单位 |
文献子类 | Article |
英文摘要 | Astronomical seeing parameters calculated based on the Kolmogorov turbulence model cannot fully evaluate the effect of the natural convection (NC) above a solar telescope mirror on the image quality, as the convective air motions and temperature variations of the NC are significantly different from the Kolmogorov turbulence. In this work, a new method based on the transient behaviors and frequency characteristics of NC-related wavefront error (WFE) are investigated in detail and used to evaluate the image quality degradation caused by a heated telescope mirror, aiming to make up for the deficiency of astronomical seeing parameters with the conventional method in evaluating the image quality degradation. Transient computational fluid dynamics (CFD) simulations and WFE calculations based on discrete sampling and ray segmentation are performed to quantitatively evaluate the transient behaviors of the NC-related WFE. It clearly exhibits apparent oscillatory characteristics, which are coupled by main oscillation with low frequencies and minor oscillation with high frequencies. Moreover, the generation mechanisms of two types of oscillations are studied. The conspicuous oscillation frequencies of the main oscillation caused by heated telescope mirrors with varying dimensions are primarily lower than 1 Hz, suggesting that active optics may be adopted to correct the main oscillation of NC-related WFE while the adaptive optics may correct the minor oscillation. Furthermore, a mathematical relationship between WFE, temperature rise, and mirror diameter is derived, revealing a significant correlation between WFE and mirror diameter. Our work suggests the transient NC-related WFE should be considered as one of the critical supplements to the mirror seeing evaluation. © 2023 Optica Publishing Group. |
学科主题 | 天文学 ; 天体物理学 ; 实测天体物理学 ; 机械工程 ; 仪器仪表技术 ; 光学技术与仪器 |
URL标识 | 查看原文 |
出版地 | 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA |
WOS关键词 | BUOYANT PLUMES ; INSTABILITY ; SIMULATION ; DOME ; AIR |
资助项目 | National Natural Science Foundation of China[11673064] ; National Natural Science Foundation of China[11773069] ; National Natural Science Foundation of China[U1931124] |
WOS研究方向 | Optics |
语种 | 英语 |
出版者 | Optica Publishing Group (formerly OSA) |
WOS记录号 | WOS:001012006000006 |
资助机构 | National Natural Science Foundation of China[11673064, 11773069, U1931124] |
源URL | [http://ir.ynao.ac.cn/handle/114a53/26102] |
专题 | 天文技术实验室 |
通讯作者 | Xu FY(许方宇) |
作者单位 | 1.Shenzhen Polaris Technology Innovation Research Institute, Shenzhen, 518000, China 2.Kunming Institute of Physics, Yunnan Province, Kunming City, 650223, China; 3.MoE Key Laboratory of Photoelectronic Imaging Technology and System, School of Optics and Photonics, Beijing Institute of Technology, 5 Zhongguancun South Street, Beijing, 100081, China; 4.Yunnan Observatories, Chinese Academy of Sciences, Yunnan Province, Kunming City, 650216, China; |
推荐引用方式 GB/T 7714 | Huang SJ,Wang, Lingxue,Hu, Xu,et al. Study of transient behaviors of wavefront error caused by natural convection for improving mirror seeing[J]. Optics Express,2023,31(11):17148-17164. |
APA | Huang SJ.,Wang, Lingxue.,Hu, Xu.,Yuan, Shouzhang.,Xu FY.,...&Cai, Yi.(2023).Study of transient behaviors of wavefront error caused by natural convection for improving mirror seeing.Optics Express,31(11),17148-17164. |
MLA | Huang SJ,et al."Study of transient behaviors of wavefront error caused by natural convection for improving mirror seeing".Optics Express 31.11(2023):17148-17164. |
入库方式: OAI收割
来源:云南天文台
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。