Most of my astrophotography time is spent on deepsky imaging using lucky imaging techniques, this means short exposures in the range of 500 ms to 5 seconds per sub. With short exposures you do not need an expensive mount, auto-guiding is also not needed and the frames you take are often sharper. I can not take images more than 1.5 - 2 hours per session, because at home I have a limited field of view due to large trees and houses of neighbors...it is my little challenge.