Gopro Starlapse Rig

I wanted to design a rig to track celestial bodies through the sky for a timelapse with my gopro. Unfortunately, most designs cost upwards of $150 to make yourself. So I set about thinking of a way to track stars with a simple, cheap motor, and came down on a 24 hour "military time" analog clock movement. This is the driver for an analog clock the hour hand of which makes one rotation every 24 hours instead of every 12. This means that it moves at almost exactly the same speed as the earth but i