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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
会议录名称Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments
卷号8197
期号8197
页码Vol.8197 0F-1-9
会议日期2011-11-6
会议地点Beijing, China
会议主办者The International Society for Optical Engineering
出版者SPIE
摘要
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.
关键词Earth-like Exoplanets High-contrast Imaging Coronagraphy Step-transmission Filter Space Telescopes
学科领域系外行星探测
文献类型会议论文
条目标识符http://ir.niaot.ac.cn/handle/114a32/622
专题会议论文
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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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