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Design and test of a high-contrast imaging coronagraph based on two 50-step transmission filters
Jiangpei Dou; Deqing Ren; Yongtian Zhu; Xi Zhang; Xue Wang
2011-12-05
Source PublicationOptical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments
Volume8197
Issue8197
PagesVol.8197 0F-1-9
Conference Date2011-11-6
Conference PlaceBeijing, China
Funding OrganizationThe International Society for Optical Engineering
PublisherSPIE
Abstract
We propose a high-contrast coronagraph based on the step transmission filters for the direct imaging of an Earth-like exoplanets. To demonstrate the performance of the coronagraph, two 50-step transmission filters were manufactured and several experiments have been performed. At present, the coronagraph can reach a high contrast around 10-7at an inner angular distance of ~2λ/D in the visible wavelength. Such a coronagraph should be installed on an off-axis space telescope which will be promising for the direct imaging of an Earth-like exoplanet in the future.
KeywordEarth-like Exoplanets High-contrast Imaging Coronagraphy Step-transmission Filter Space Telescopes
Subject Area系外行星探测
Document Type会议论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/622
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
Jiangpei Dou,Deqing Ren,Yongtian Zhu,et al. Design and test of a high-contrast imaging coronagraph based on two 50-step transmission filters[C]:SPIE,2011:Vol.8197 0F-1-9.
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