Fixed pattern noise in high-resolution, CCD readout photon-counting detectors

被引:31
|
作者
Michel, R
Fordham, J
Kawakami, H
机构
[1] Univ London Univ Coll, Dept Phys & Astron, London WC1E 6BT, England
[2] UCL, Mullard Space Sci Lab, Surrey RH5 6NT, England
关键词
instrumentation : detectors; instrumentation : miscellaneous; techniques : photometric;
D O I
10.1093/mnras/292.3.611
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The image quality obtained with high-resolution, CCD readout photon-counting detectors can be greatly affected by an image modulation or fixed pattern noise that results from errors in centroiding. In this paper we study the factors that contribute to this modulation, in particular where it is shown that the illumination level and variations in event width as detected by the CCD camera can have a large effect. It is also shown that by using a centroiding algorithm based on Gaussian fitting, the modulation can be minimized.
引用
收藏
页码:611 / 620
页数:10
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