No doubt the supplied dark has extremely low noise, but 8 electrons variation will in some cases (imaging faint nebulae) need to be corrected with darks when using the camera for 5-minute or longer subs in narrowband imaging. Also, since noise goes up with signal, even after applying darks there will probably be somehow higher noise left in those brighter areas?
I am sorry if I am too particular and also too inquisitive, but I like doing my homework before buying. Also, I am specifically interested in this camera's performance in purely narrowband imaging because of intense light pollution in my area plus I simply like narrowband imaging
EDIT: Will need to measure background signal in my subs.