Vimeo member Brad Justinen shares a DIY motorized roller dolly and use a Meade motorized Telescope head for some smooth pan/tilt action. You'll see how all this comes together in the video, and more information on the parts used at the video description. Many of these parts can be found cheaper used via eBay found below.
Traxxas Transmitter and Receiver For Servo Control
Meade Telescope Milapse Motion Pan Tilt