Love the mountain. Only reason I gave four stars is because my first mount with only 5 months of use went completely dead from one night to the next. Upon investigation, found a blown transistor on the control board. Online search revealed quite a few instances of this. May be a design flaw. Skywatcher replaced the board under warranty and I bought this as my second mount so hopefully will not be left high and dry for several clear sky nights again. Although I powered the original mount stand alone with a quality regulated supply I am incorporating an electronic overcurrent monitor in line to disconnect the power at even the slightest hint of an overcurrent condition in the future.