The Extreme Ultraviolet Imagers (EUVIs): Earth-observing telescopes on International Space Station
The Extreme Ultraviolet Imagers (EUVIs): Earth-observing telescopes on International Space Station
复制标题
极紫外成像仪（EUVI）：国际空间站上的地球观测望远镜
DOI：
10.1117/12.977429
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Kentaro Uji
中科院分区：
文献类型：
--
作者：
Onodera;S.;Kuno;N.;Tosaki;T. 他9名;藤村 雅代;Kentaro Uji
极紫外成像仪 (EUVI) 于 2012 年 7 月 21 日作为有效载荷发射到国际空间站上的日本实验舱 (JEM-EF) 暴露设施。 EUVI 是 IMAP（电离层、中间层、高层大气和等离子体层测绘）任务的一部分，旨在观测地球的高层大气、中间层、电离层、热层和等离子体层。 IMAP 的另一部分是可见光和近红外光谱成像仪 (VISI)。在这次任务中，我们安装了两个独立且相同的望远镜。一台望远镜探测 O+ 的地面 EUV 发射（波长 83.4 nm），另一台望远镜探测 He+（波长 30.4 nm）。在大约400公里的高度，两台望远镜直接指向地球边缘，从内到外观察电离层和等离子体层。最大空间分辨率为0.1°，时间分辨率为1分钟。该光学仪器由针对 30.4 nm 优化的多层镀膜镜、金属薄滤光片和 5 级微通道板组成，可有效拾取光子事件。在我们的演示中，我们报告了任务概述、仪器和地面校准结果。
The Extreme Ultraviolet Imagers (EUVIs) were launched on 21st July 2012 as payloads to the Exposed Facility of the Japanese Experiment Module (JEM-EF) on the International Space Station. The EUVIs are parts of the IMAP (Ionosphere, Mesosphere, upper Atmosphere, and Plasmasphere mapping) mission to observe the Earth’s upper atmosphere, mesosphere, ionosphere, thermosphere and plasmasphere. The other part of IMAP is a visible and near-infrared spectral imager (VISI). In this mission, we install two independent and identical telescopes. One telescope detects the terrestrial EUV emission from O+(at the wavelength of 83.4 nm), and the other one detects He+(30.4 nm). At the altitude of approximately 400 km, the two telescopes direct towards the Earth’s limb to look at the ionosphere and plasmasphere from the inside-out. The maximum spatial resolution is 0.1° and time resolution is 1 minute. The optical instruments consist of multilayer coated mirrors which are optimized for 30.4 nm, metallic thin filters and 5-stage microchannel plates to pick up photon events efficiently. In our presentation, we report the mission overview, the instruments and the result of ground calibrations.