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Issue created Dec 05, 2022 by Zhang Tianmeng@zhangtianmengDeveloper

0秒曝光dark和bias图像比较

用仿真1.0.4版本软件产生了一次曝光的单幅图像的bias,flat和dark。原理上来说,0秒曝光的dark和bias应该完全一样。我们画了一下两幅图像相同区域的流量直方图分布,发现不完全一样。 图片

可见0秒曝光的dark图像比bias略宽,中值也大了将近1个adu 此外,两幅图像都没有暗于420adu的像元,从其它探测器的实测数据看来,流量下限有截止也比较难理解

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