Are you annoyed that celestial bodies "migrate" quickly out of the field of view of your telescope and it shakes when you touch it to bring it back into the field of view?! If so, the Clockworker is the solution to this problem: it makes your time with the telescope even more comfortable by allowing your telescope to automatically "follow" the object you have set.
SkyWatcher Avant and StarQuest watchmaker allows you to follow the sky for extended periods of time.