Greetings,
So I'm new to the forum and PI in general so this is all very new to me. I need some help to better understand issues I'm having with hot pixels in my final stacked images. My image is comprised of 30 light frames, 20 dark frames, 40 flat frames and 40 bias. The following screenshot is a zoomed in master light of M51, the one on the left is without bias frames and the one on the right is with the bias frames. I have ran both with the BatchPreprocessing script using default values, average combination and winsorized sigma clipping for all frames. I'm not understanding why bias frames would have any effects with hot pixels, why wouldn't the dark frames take care of this? The camera is a ZWO ASI533MC PRO, the light and dark frames were taken at 3 minutes with a temperature of -20c no dithering. Thanks for any help in advance, Dan.
So I'm new to the forum and PI in general so this is all very new to me. I need some help to better understand issues I'm having with hot pixels in my final stacked images. My image is comprised of 30 light frames, 20 dark frames, 40 flat frames and 40 bias. The following screenshot is a zoomed in master light of M51, the one on the left is without bias frames and the one on the right is with the bias frames. I have ran both with the BatchPreprocessing script using default values, average combination and winsorized sigma clipping for all frames. I'm not understanding why bias frames would have any effects with hot pixels, why wouldn't the dark frames take care of this? The camera is a ZWO ASI533MC PRO, the light and dark frames were taken at 3 minutes with a temperature of -20c no dithering. Thanks for any help in advance, Dan.