Quote:
Originally Posted by Camelopardalis
Maximum possible dynamic range from the camera is attained at roughly gain 75, where ~12 stops can be achieved. This would likely double the length of the exposures you'd need.
In practice, the dynamic range is likely to be limited by your imaging location. Narrowband is not immune from city lights.
What's the background ADU of your images?
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Hi Dunk
If K is the ADU value when I left click on an image in Pixinsight, I am getting 416 on a single sulfur sub and 116 on a stack of 25 with darks and flats applied. I don't know what a good K value would be though?