POA Investigation of FOS Dark Correction
نویسندگان
چکیده
The dark flux correction step of the Faint Object Spectrograph calibration pipeline was investigated with the joint aims of applying a more physical model and improving the performance of the pipeline. After processing with the original calfos pipeline, dark calibration data shows a large scatter in count rates. We were able to reduce this scatter to some extent by scaling the correction according to the magnetic shell parameter. However, we were unable to find other parameterisations, having either an empirical or physical basis, which would reduce this scatter further. The distribution of the size and intensity of dark events, epoch dependency and the form of the diode mask were also investigated.
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