Astronomical observation by 2-meter telescope based on liquid crystal adaptive optics with phase diversity

doi:10.1016/j.optcom.2019.01.036

CIOMP OpenIR

	Astronomical observation by 2-meter telescope based on liquid crystal adaptive optics with phase diversity
	D.S.Wu; C.L.Yang; H.Li; P.G.Zhang; X.Y.Zhang; Z.L.Cao; Q.Q.Mu
	2019
发表期刊	Optics Communications
ISSN	0030-4018
卷号	439 页码:129-132
摘要	A set of liquid crystal adaptive optics system for visible light is installed for 2-meter telescope in Changchun, China. To get higher resolution images after adaptive optics, phase diversity (PD) is applied. Two liquid crystal spatial light modulators were used for two polarized states of light, and they were also used for two channel correction of focused image and diversity image. Observations about star HD 29139 were performed on March 23, 2018. The results of the star with the PD show that the full width half maximum was decreased from about 10 pixels to 4 pixels, corresponding to angular resolution improved from 0.5 '' to 0.2 ''. The peak intensity was improved by 66.7% after the PD. The root mean square of the wavefront estimated using the PD agrees with the Strehl ratio of observed image after adaptive optics. The observed results indicate that the PD technique can significantly improve the image resolution after liquid crystal adaptive optics.
关键词	Phase diversity,Image restoration,Liquid crystal,Adaptive optics,reconstruction,aberrations,system,Optics
DOI	10.1016/j.optcom.2019.01.036
收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/62951
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	D.S.Wu,C.L.Yang,H.Li,et al. Astronomical observation by 2-meter telescope based on liquid crystal adaptive optics with phase diversity[J]. Optics Communications,2019,439:129-132.
APA	D.S.Wu.,C.L.Yang.,H.Li.,P.G.Zhang.,X.Y.Zhang.,...&Q.Q.Mu.(2019).Astronomical observation by 2-meter telescope based on liquid crystal adaptive optics with phase diversity.Optics Communications,439,129-132.
MLA	D.S.Wu,et al."Astronomical observation by 2-meter telescope based on liquid crystal adaptive optics with phase diversity".Optics Communications 439(2019):129-132.

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