Depends which telescope you use it with and its focal length. Different sensors and different pixel sizes can lead to over or under sampling etc, although don't worry if a bit under or over sampled. All ZWO cameras are great, just need to pair the right one with your scope and test its field of view framing in software like Stellarium or SkySafari to see if it frames the DSO's you want to capture. One camera usually isn't ideal for planets and for DSO...its one or the other usually, even more so on your telescope choice.