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CUBIC: filters and the space environment

机译:CUBIC:过滤器和太空环境

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Abstract: CUBIC, the Cosmic Unresolved x-ray Background Instrument using CCDs, is instrumented to make non-dispersive spectral observations, with moderate energy resolution over the energy range 200 eV - 10 keV. The CUBIC filter set is designed to attenuate optical and UV photons, with special emphasis on blocking geocoronal lines. To still allow useful soft x-ray transmission, a single thin (1200 angstroms) Al/Ti filter has been designed as the Optical/UV blocking filter. Since the detectors are mechanically collimated, the CUBIC filters are susceptible to pin hole punctures from micrometeoroids. We review some of the LDEF micrometeoroid measurements, and find that while there is good probability that micrometeoroids will transit our filter, the holes will be small enough and few enough in number to have no significant impact on our stray light counting rate.!22
机译:摘要:CUBIC是使用CCD的宇宙未解析x射线背景仪,用于进行非分散光谱观察,在200 eV-10 keV的能量范围内具有中等能量分辨率。 CUBIC滤光片套件旨在衰减光学和紫外线光子,特别着重于阻塞冠状线。为了仍然允许有用的软X射线传输,已将单个薄(1200埃)的Al / Ti滤光片设计为光学/ UV阻挡滤光片。由于检测器是机械准直的,因此CUBIC过滤器容易受到微类金属针孔的刺穿。我们回顾了一些LDEF微流星体的测量结果,发现尽管微流星体很有可能会通过我们的滤光片,但这些孔将足够小且数量很少,不会对我们的杂散光计数率产生重大影响。22

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