@greatgodoffire You can essentially cancel light pollution but it requires ever more total exposure time so it becomes impractical; for some dim objects it's no feasible to image from highly light polluted areas.
Exposure time depends on your sensor, optics, light pollution, guiding accuracy and target. For this image I did 2 minute luminance exposures. But sometimes I do 60s (e.g. for stars only) and up to 20 mins (very dim dark nebulas).
The ZWO AM5 is a fantastic mount.