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Performance of the 37-element solar adaptive optics for the 26 cm solar fine structure telescope at Yunnan Astronomical Observatory
Rao, CH1,2; Zhu, L1,2; Rao, XJ1,2; Guan, CL1,2; Chen, DH1,2; Chen, SQ1,2; Lin J(林隽)3; Liu ZZ(刘子忠)3; Zhu, L (reprint author), Chinese Acad Sci, Key Lab Adapt Opt, POB 350, Chengdu 610209, Sichuan, Peoples R China.
Source PublicationAPPLIED OPTICS
2010-11
Volume49Issue:31Pages:G129-G135
DOI10.1364/AO.49.00G129
Contribution Rank第3完成单位
Indexed BySCI ; EI
AbstractA 37-element solar adaptive optics system, which consists of a fine tracking loop with a tip/tilt mirror and a correlation tracker, and a high-order correction loop with a 37-element deformable mirror, a correlating Shack-Hartmann wavefront sensor, and a real-time controller, was built and installed at the 26 cm solar fine structure telescope of the Yunnan Astronomical Observatory in 2009. In this system, the absolute difference algorithm is used. A new architecture with field-programmable gate array (FPGA) and digital signal processor (DSP) for the real-time controller based on systolic array and pipeline was developed. The computational latencies of the fine tracking loop and high-order correction loop are about 35 and 100 mu s, respectively. The tracking residual root-mean-square error is less than 0.1 arcsec, and the wavefront residual root-mean-square error is about 0.05 wavelengths (lambda = 550 nm) after correction. The observational results show that the contrast and resolution of the solar images are improved after the correction by this adaptive optics system. (C) 2010 Optical Society of America
Language英语
Subject AreaOptics
SubtypeArticle
ISSN1559-128X
URL查看原文
WOS IDWOS:000283653000014
WOS Research AreaOptics
WOS SubjectOptics
WOS KeywordSYSTEM
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6157
Collection太阳物理研究组
Corresponding AuthorZhu, L (reprint author), Chinese Acad Sci, Key Lab Adapt Opt, POB 350, Chengdu 610209, Sichuan, Peoples R China.
Affiliation1.The Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, P.O. Box 350, Shuangliu, Chengdu 610209, Sichuan, China
2.The Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, P.O. Box 350, Shuangliu, Chengdu 610209, Sichuan, China
3.Yunnan Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Phoenix Hill, Kunming 650011, Yunnan, China
Recommended Citation
GB/T 7714
Rao, CH,Zhu, L,Rao, XJ,et al. Performance of the 37-element solar adaptive optics for the 26 cm solar fine structure telescope at Yunnan Astronomical Observatory[J]. APPLIED OPTICS,2010,49(31):G129-G135.
APA Rao, CH.,Zhu, L.,Rao, XJ.,Guan, CL.,Chen, DH.,...&Zhu, L .(2010).Performance of the 37-element solar adaptive optics for the 26 cm solar fine structure telescope at Yunnan Astronomical Observatory.APPLIED OPTICS,49(31),G129-G135.
MLA Rao, CH,et al."Performance of the 37-element solar adaptive optics for the 26 cm solar fine structure telescope at Yunnan Astronomical Observatory".APPLIED OPTICS 49.31(2010):G129-G135.
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