分光光度测量的相对飞行中通量自校准的建议
A proposal for relative in-flight flux self-calibrations for spectro-photometric surveys
摘要：
我们提出了一种方法，在飞行中的相对通量自校准的分光光度计仪器，一般足以适用于任何即将到来的星系调查的卫星。仪器的响应函数，占一个平滑的连续变化，由于望远镜的光学，顶部的不连续的效果，由于分割的检测器，推断与$χ^2$统计。该方法提供了无偏推断的源计数率和重建的相对响应函数，在高计数率的限制。我们模拟了一个简化的序列的观察空间随机模式和现实的分布源和计数率，与量化的相对重要性的数量的源和曝光正确重建的仪器响应的目的。我们提出了一个验证的方法，与品质因数的定义来量化预期的性能，在合理的情况下。
英文摘要：
We present a method for the in-flight relative flux self-calibration of a spectro-photometer instrument, general enough to be applied to any upcoming galaxy survey on satellite. The instrument response function, that accounts for a smooth continuous variation due to telescope optics, on top of a discontinuous effect due to the segmentation of the detector, is inferred with a $χ^2$ statistics. The method provides unbiased inference of the sources count rates and of the reconstructed relative response function, in the limit of high count rates. We simulate a simplified sequence of observations following a spatial random pattern and realistic distributions of sources and count rates, with the purpose of quantifying the relative importance of the number of sources and exposures for correctly reconstructing the instrument response. We present a validation of the method, with the definition of figures of merit to quantify the expected performance, in plausible scenarios.
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