Performance of the Fast Atmospheric Self Coherent camera at the NEW-EARTH lab and a simplified measurement algorithm
Performance of the Fast Atmospheric Self Coherent camera at the NEW-EARTH lab and a simplified measurement algorithm
复制标题
新地球实验室快速大气自相干相机的性能和简化的测量算法
DOI:
10.1117/12.2630415
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发表时间:
2022
期刊:
影响因子:
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通讯作者:
W. Heidrich
中科院分区:
文献类型:
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作者:
W. Thompson;C. Marois;Garima Singh;O. Lardière;B. Gerard;Q. Fu;W. Heidrich
In order to detect low mass and mature planets inwards of approximately 5 AU, future direct imaging instruments will require precision wavefront control that operates at relatively high speed. The self-coherent camera (SCC) is a promising technique for measuring the wavefront from science images at the focal plane. We present here results from NRC’s NEW-EARTH lab testing of the Fast Atmospheric SCC Technique, a variant of the SCC and its integration with a Lyot-stop Low-Order Wavefront Sensor. We demonstrate correction of quasi-static speckles in a half dark hole reaching raw 1σ contrasts on the order of 5 × 10−7 at 10 λ/D. We also present a simplified process for extracting measurements and/or DM commands from SCC images using a single matrixvector multiply. This testing and development are important steps on the way to the upcoming Subaru Pathfinder Instrument for Detection of Exoplanets and Removal of Speckles and the Gemini Planet Imager’s CAL2 upgrade.
DOI:
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发表时间:
2011
期刊:
影响因子:
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作者:
村上尚史;西川淳;W.A.Traub;D.Mawet;D.C.Moody;B.D.Kern;J.T.Trauger;E.Serabyn;田村元秀;馬場直志;村上浩
通讯作者:
村上浩