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首页> 外文会议>Solar Physics and Space Weather Instrumentation II; Proceedings of SPIE-The International Society for Optical Engineering; vol.6689 >HECOR, a Helium CORonagraph aboard the Herschel sounding rocket
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HECOR, a Helium CORonagraph aboard the Herschel sounding rocket

机译：HECOR，赫歇尔探空火箭上的氦冠冕仪

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摘要

HECOR (Helium CORonagraph) is a coronagraph designed to observe the solar corona at 30.4 nm between 1.2 and 4 solar radii. The instrument is part of the Herschel sounding rocket payload to be flown from White Sands Missile Range in December 2007. Much like for neutral hydrogen, the residual singly ionized helium present in the corona can be detected because it resonantly scatters the intense underlying chromospheric radiation. Combined with the simultaneous measurements of the neutral hydrogen corona made by SCORE, the other coronagraph of the Herschel payload, the HECOR observations will provide novel diagnostics of the solar wind outflow. HECOR is an externally occulted coronagraph of very simple design. It uses a triple-disc external occulting system, a single off axis multilayer coated mirror and a CCD camera. We present measurements of the EUV mirror roughness and reflectivity, tests of the image quality, and measurements of the stray light rejection performance. The mirror uses a novel multilayer design with three components that give HECOR a high throughput.
机译：HECOR（氦电晕仪）是一种日冕仪，旨在观察太阳半径为1.2至4的30.4 nm太阳日冕。该仪器是将于2007年12月从白沙导弹靶场飞行的赫歇尔探空火箭有效载荷的一部分。与中性氢非常相似，电晕中残留的单离子氦可以被探测到，因为它共振地散射了强烈的色层下层辐射。结合由赫歇尔有效载荷的另一幅日冕仪SCORE进行的中性氢电晕的同时测量，HECOR观测将提供对太阳风流出的新颖诊断。 HECOR是外观非常简单的外部日冕仪。它使用三片式外部掩星系统，一个离轴多层涂层镜和CCD相机。我们介绍了EUV镜的粗糙度和反射率的测量，图像质量的测试以及杂散光抑制性能的测量。镜子采用新颖的多层设计，具有三个组件，可为HECOR提供高通量。

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