The Near Infrared Sky Background
The Near Infrared Sky Background
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近红外天空背景
DOI：
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发表时间：
2014
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通讯作者：
N. Pirzkal
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文献类型：
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作者：
N. Pirzkal
WFC3的红外观测通常是受背景限制的。在绝大多数情况下，当HST指向远离地球边缘时，对这种背景光的主要贡献是黄道红外光，包括gegenschein，即天空中以地球反太阳点为中心的二极体发光。在这篇ISR中，我们介绍了WFC3自发射以来和在几个宽带波段上观测到的红外本底能级的直接测量。我们将我们的观察结果与目前在曝光时间中使用的值进行比较
WFC3 IR observations are often background limited. In the vast majority of cases, when HST is pointed away from the Earth Limb, the main contribution to this background light is caused by zodiacal infrared light, including the Gegenschein, the diuse glow in the sky centered upon Earth’s antisolar point. In this ISR, we present direct measurements of the infrared background levels as observed by WFC3 since its launch and in several broad band lters. We compare our observations to the values currently used in the Exposure Time