Johnp1951

Thank you for the advice Alan, will give it ago when the weather gets better.

I have recently bought ZWO ASI1600 cooled pro camera and filters, after using an ATIK camera for many years, this new camera is quite a challenge, for example the gain settings, how many astronomers have had this challenge, I took some images of Messier 27 last night at gain 175 offset 25, taking 10 x 180 sec in luminance and R,G,B and HA O3 S2, the LRGB where a lot darker than I expected when blended together in photoshop. has anybody else had this problem.