Revealing a detailed performance of the soft x-ray telescopes of the ASTRO-H mission
Revealing a detailed performance of the soft x-ray telescopes of the ASTRO-H mission
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揭示 ASTRO-H 任务软 X 射线望远镜的详细性能
DOI：
10.1117/12.2055622
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Sato T. et al.
中科院分区：
文献类型：
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作者：
阿波智広;南 安規;檜山 爲次郎;Sato T. et al.
国际x射线天文台ASTRO-H目前计划于2015年发射。ASTRO-H任务涵盖了从几百eV到600 keV的广泛能量范围。两台软x射线望远镜（SXT- 1和SXT-2）在该范围内对高达12 keV的软x射线天空进行成像。它们分别在CCD相机（SXI）和量热计（SXS-XCS）的焦平面探测器上聚焦图像。在本文中，我们给出了两个sxt的点扫描测量结果。点扫描通过8mm × 8mm光束的映射来充分照亮望远镜，并创建半功率直径（HPD）的“地图”和聚焦图像的焦点位置。我们在望远镜的局部区域发现了性能的变化。每个斑点图像具有不同的焦点位置和不同的HPD。此外，我们发现HPD的地图在象限之间非常相似，但在象限之间，半径之间，方位角之间，焦点位置的地图不同。
The international X-ray observatory, ASTRO-H is currently planed as launched in 2015. The ASTRO-H mission covers a wide energy range from a few hundreds eV to 600 keV. The two Soft X-ray Telescopes (SXT- 1 and SXT-2) play a role to image the soft X-ray sky up to ~12 keV in that range. Each of them focuses an image on the focal plane detectors of the CCD camera (SXI) and the calorimeter (SXS-XCS), respectively. In this paper, we present spot scan measurements of the two SXTs. The spot scan fully illuminates the telescope by mapping with the 8 mm by 8 mm beam and creates the ”maps” of the half power diameter (HPD) and the focal location of the focused image. We found variations of performance at local area of the telescope. Each of the spot images has different focal-location and different HPD. Moreover, we found that the map of the HPD is very similar from quadrant to quadrant, but the map of the focal location is different from quadrant to quadrant, from radius to radius, and from azimuthal angle to angle.