漫紫外前景
The Diffuse Ultraviolet Foreground
摘要：
从低地球轨道进行紫外线观测必须处理由气辉和黄道光组成的前景，这取决于观测方向和观测日期和时间。我们已经使用了全天空观测从GALEX航天器发现，气辉可以分为一个基线依赖于太阳角度和一个组件只依赖于当地午夜的时间。黄道光只在银河系的近紫外波段（2321）可观测到，与可见光的黄道光成比例，但颜色为0.65，表明尘埃颗粒在紫外线下反射性较低。
英文摘要：
Ultraviolet observations from low Earth orbit (LEO) have to deal with a foreground comprised of airglow and zodiacal light which depend on the look direction and on the date and time of the observation. We have used all-sky observations from the GALEX spacecraft to find that the airglow may be divided into a baseline dependent on the sun angle and a component dependent only on the time from local midnight. The zodiacal light is observable only in the near ultraviolet band (2321 Å) of GALEX and is proportional to the zodiacal light in the visible but with a color of 0.65 indicating that the dust grains are less reflective in the UV.
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