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Telescope of extreme ultraviolet (TEX) onboard SELENE: science from the Moon

机译：SELENE上的极紫外（TEX）望远镜：月球科学

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The Upper Atmosphere and Plasma Imager (UPI) is to be launched in 2007 and sent to the Moon. From the lunar orbit, two telescopes are to be directed towards the Earth. The Moon has no atmosphere, which results in there being no active emission near the spacecraft; consequently, we will have a high-quality image of the near-Earth environment. As the Moon orbits the Earth once a month, the Earth will also be observed from many different directions. This is called a "science from the Moon". The two telescopes are mounted on a two-axis gimbal system, the Telescope of Extreme ultraviolet (TEX) and Telescope of Visible light (TVIS). TEX detects the O II (83.4 nm) and He II (30.4 nm) emissions scattered by ionized oxygen and helium, respectively. The targets of extreme-ultraviolet (EUV) imaging are the polar ionosphere, the polar wind, and the plasmasphere and inner magnetosphere. The maximum spatial and time resolutions are 0.09 Re and 1 min, respectively.
机译：上层大气和等离子成像仪（UPI）将于2007年发射并送入月球。从月球轨道上将有两个望远镜指向地球。月球没有大气层，导致航天器附近没有活跃的发射;因此，我们将获得近地球环境的高质量图像。当月球绕地球一周一次时，还将从许多不同的方向观察地球。这被称为“月球科学”。这两个望远镜安装在两轴万向架系统上，即极端紫外线望远镜（TEX）和可见光望远镜（TVIS）。 TEX分别检测被电离的氧气和氦气散射的O II（83.4 nm）和He II（30.4 nm）发射。极紫外（EUV）成像的目标是极地电离层，极地风以及等离子层和内部磁层。最大空间分辨率和时间分辨率分别为0.09 Re和1分钟。

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