Ground-layer Adaptive Optics for the 2.5 m Wide-field and High-resolution Solar Telescope  

作　　者：Ying Yang Lan-Qiang Zhang Nan-Fei Yan Jin-Sheng Yang Zhen Li Teng-Fei Song Xue-Jun Rao Chang-Hui Rao 

机构地区：[1]Key Laboratory on Adaptive Optics,Chinese Academy of Sciences,Chengdu 610209,China [2]Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China [3]School of Electronic,Electrical and Communication Engineering of the University of Chinese Academy of Sciences,Beijing 100049,China [4]University of Chinese Academy of Sciences,Beijing 100049,China [5]School of Astronomy and Space Science,Nanjing University,Nanjing 210023,China [6]Key Laboratory of Modern A&A,Ministry of Education,Nanjing 210023,China [7]Yunnan Observatories,Chinese Academy of Sciences,Kunming 650216.China

出　　处：《Research in Astronomy and Astrophysics》2024年第3期224-236,共13页天文和天体物理学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(12103057,12127901);the Frontier Research Fund of the Institute of Optics and Electronics,Chinese Academy of Sciences(C21K002);the Youth Innovation Promotion Association,Chinese Academy of Sciences(2021378);the National Natural Science Foundation of China(U2031148)。

摘　　要：The 2.5 m wide-field and high-resolution solar telescope(WeHoST)is currently under developing for solar observations.WeHoST aims to achieve high-resolution observations over a super-wide field of view(FOV)of5′×5′,and a desired resolution of 0.3″.To meet the scientific requirements of WeHoST,the ground-layer adaptive optics(GLAO)with a specially designed wave front sensing system is as the primary consideration.We introduce the GLAO configuration,particularly the wave front sensing scheme.Utilizing analytic method,we simulate the performance of both classical AO and GLAO systems,optimize the wave front sensing system,and evaluate GLAO performance in terms of PSF uniformity and correction improvement across whole FOV.The results indicate that,the classical AO will achieve diffraction-limited resolution;the suggested GLAO configuration will uniformly improve the seeing across the full 5′×5′FOV,reducing the FWHM across the axis FOV to less than0.3″(λ≥705 nm,r0≥11 cm),which is more than two times improvement.The specially designed wave front sensor schedule offers new potential for WeHoST’s GLAO,particularly the multi-FOV GLAO and the flexibility to select the detected area.These capabilities will significantly enhance the scientific output of the telescope.

关 键 词：INSTRUMENTATION adaptive optics-instrumentation detectors-instrumentation high angular resolution-methods numerical-telescopes-Sun activity 

分 类 号：P111.2[天文地球—天文学]