The Gemini Planet Imager coronagraph testbed

The Gemini Planet Imager coronagraph testbed
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双子座行星成像仪日冕仪测试台

DOI:
10.1117/12.826700
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发表时间:
2009
期刊:
The Astronomical Journal
影响因子:
--
通讯作者:
J. Mey
J. Mey
中科院分区:
--
文献类型:
--
作者:
R. Soummer;A. Sivaramakrishnan;B. Oppenheimer;Robin Roberts;D. Brenner;A. Carlotti;L. Pueyo;B. Macintosh;Brian Jeffrey Bauman;L. Saddlemyer;D. Palmer;D. Erickson;C. Dorrer;K. Caputa;C. Marois;K. Wallace;E. Griffiths;J. Mey

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双子座行星成像仪(GPI)是一个新的设施仪器,将于2011年初在8米双子座南望远镜上投入使用。它结合了几个子系统,包括一个1500子孔径极端自适应光学系统,一个切趾光瞳Lyot日冕仪,一个近红外高精度干涉波前传感器,和一个积分场单元光谱仪,它作为科学仪器。GPI的主要科学目标是探测和描述相对年轻(<20亿年)的自发光行星,其行星-恒星亮度比在近红外线范围内≤ 10-7。在这里,我们提出了一个概述的日冕子系统,其中包括一个光瞳变迹,硬边焦平面掩模和Lyot停止。我们讨论设计优化,掩模制造和测试。我们描述了一个近红外实验平台,它实现了宽带对比度(H波段)低于10-6,在分离> 5λ/D,没有主动波前控制(无变形镜)。我们使用菲涅尔传播模型来分析测试台的结果。
The Gemini Planet Imager (GPI) is a new facility instrument to be commissioned at the 8-m Gemini South telescope in early 2011. It combines of several subsystems including a 1500 subaperture Extreme Adaptive Optics system, an Apodized Pupil Lyot Coronagraph, a near-infrared high-accuracy interferometric wavefront sensor, and an Integral Field Unit Spectrograph, which serves as the science instrument. GPI's main scientific goal is to detect and characterize relatively young (<2GYr), self luminous planets with planet-star brightness ratios of ≤ 10-7 in the near infrared. Here we present an overview of the coronagraph subsystem, which includes a pupil apodization, a hard-edged focal plane mask and a Lyot stop. We discuss designs optimization, masks fabrication and testing. We describe a near infrared testbed, which achieved broadband contrast (H-band) below 10-6 at separations > 5λ/D, without active wavefront control (no deformable mirror). We use Fresnel propagation modeling to analyze the testbed results.
DOI: 10.1038/35570
发表时间: 1998-02-12
期刊: NATURE
影响因子: 64.8
作者:
Ebbesen, TW;Lezec, HJ;Wolff, PA
通讯作者: Wolff, PA
HiCIAO:斯巴鲁望远镜的新型高对比度日冕成像仪,用于自适应光学
DOI: --
发表时间: 2008
期刊: Proceedings of SPIE 7014
影响因子: --
作者:
B.Sun;T.Ohtsubo;T.Suzuki;T.Yamaguchi;他;天形健;Hodapp Klaus
通讯作者: Hodapp Klaus