A phase-diversity speckle experimental system for one meter-scale ground-based telescope

	A phase-diversity speckle experimental system for one meter-scale ground-based telescope
	Zhang, S. X. and B. Wang
	2015
发表期刊	Optik
卷号	126 期号:24 页码:5047-5051
摘要	Phase-diversity (PD) is the least square adaptive-filter of the imaging system based on wave optics theory. It can use unknown extended object as the observation object to collect two or more images whose wave front diversities are known and fixed. According to the images, the wave-front of the optical system can be calculated by PD, and simultaneously the estimation of ideal image for the observation object can be obtained. Phase-diverse speckle (PDS) technique extends PD by using a series of short-expose frames as the input. In this paper, we designed PDS experiment on a 1.23 m telescope and successfully got clear restored images of space objects. Under the observation condition that the atmospheric coherent length was not more than 8 cm at 500 nm wavelength in Changchun city, we replaced the deformable mirror with a plane mirror in adaptive optical system and separately used the moon and Polaris as the observation objects. For Polaris, the FWHW reduced from 20.6 to 5.3 (in pixel), which decreased about 74%. The experimental results demonstrate that PDS algorithm can be used on one meter-scale telescope in practical observation. (C) 2015 Elsevier GmbH. All rights reserved.
收录类别	SCI ; EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/55514
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhang, S. X. and B. Wang. A phase-diversity speckle experimental system for one meter-scale ground-based telescope[J]. Optik,2015,126(24):5047-5051.
APA	Zhang, S. X. and B. Wang.(2015).A phase-diversity speckle experimental system for one meter-scale ground-based telescope.Optik,126(24),5047-5051.
MLA	Zhang, S. X. and B. Wang."A phase-diversity speckle experimental system for one meter-scale ground-based telescope".Optik 126.24(2015):5047-5051.

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