Most are aimed by hand, although some are tricked out with computerized drive systems.
A popular variation of the altitude-azimuth mount turns a Newtonian telescope into what is called a Dobsonian telescope. Dobsonians are simply Newtonian reflectors situated on a mount that moves up and down in elevation and pivots in azimuth, like a lazy Susan. Most are aimed by hand, although some are tricked out with computerized drive systems.