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
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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:
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影响因子:
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通讯作者:
W. Heidrich
W. Heidrich
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--
文献类型:
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作者:
W. Thompson;C. Marois;Garima Singh;O. Lardière;B. Gerard;Q. Fu;W. Heidrich

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为了探测大约5天文单位以内的低质量和成熟行星,未来的直接成像仪器将需要以相对高速运行的精确波前控制。自相干相机(SCC)是一种很有前途的测量科学图像焦平面波前的技术。我们在这里展示了NRC的新地球实验室对快速大气SCC技术的测试结果,SCC是SCC的一种变体,它与Lyot-stop低阶波前传感器集成。我们证明了在10 λ/D下,半黑洞中的准静态斑的校正达到了5 × 10−7的原始1σ对比度。我们还提出了一个简化的过程,用于使用单个矩阵向量乘法从SCC图像中提取测量和/或DM命令。这项测试和开发是即将到来的斯巴鲁探路者仪器的重要步骤,用于探测系外行星和去除斑点,以及双子座行星成像仪的CAL2升级。
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.
使用高对比度成像测试台(HCIT)进行8段光子晶体掩模日冕仪的演示实验
DOI: --
发表时间: 2011
期刊:
影响因子: --
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