NIAOT OpenIR  > 中国科学院南京天文光学技术研究所  > 会议论文
Optical Misalignment Sensing for Optical Aperture Synthesis Telescope by Using Phase Diversity
Fang Cao; Yongtian Zhu; Zhen Wu
2008-07-10
Source PublicationAdaptive Optics Systems
Volume7015
Issue7015
PagesVol.7015 4Q-1-7
Conference Date2008-6-23
Conference PlaceMarseille, France
Funding OrganizationThe International Society for Optical Engineering
PublisherSPIE
Abstract
An optical aperture synthesis telescope such as the LBT will suffer from phase errors unless the apertures are aligned to within a small fraction of a wavelength. A phase diversity wave-front sensor can measure phase errors brought by a misaligned aperture synthesis telescope. The Phase Diversity is formulated in the context of nonlinear programming where a metric is developed and then minimized. We here introduce a novel Genetic Algorithms (GAs), evaluate the different Zernike coefficients to obtain the wave-front error. The results of the computer simulations performed with simulated data including the effects of noise are shown for the case of random misalignment phase errors on each of three sub-telescope.
KeywordAperture Synthesis Telescope Wave-front Sensors Phase Diversity Method Genetic Algorithms
Subject Area恒星光干涉及综合孔径
Document Type会议论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/561
Collection中国科学院南京天文光学技术研究所_会议论文
天文光谱和高分辨成像技术研究室_会议论文
Recommended Citation
GB/T 7714
Fang Cao,Yongtian Zhu,Zhen Wu. Optical Misalignment Sensing for Optical Aperture Synthesis Telescope by Using Phase Diversity[C]:SPIE,2008:Vol.7015 4Q-1-7.
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