[raymo]

I note that imagers do not necessarily take as many darks as lights; say
50 lights and 20 darks. When working with the camera's noise
reduction enabled [thereby halving imaging time], can I employ the same
method, or do I need to let it do it's thing for each exposure? In other words is noise reduction simply a dark, or does the camera do other things as well to try to reduce noise?
raymo