This compact mount platform allows you to capture night scapes and star images with ease. Set up is simple. The Polarie attaches to a standard camera tripod and can accept any digital camera weighing up to 3.5lbs. Using the included compass on the Polarie, orient the mount to face north. The Polarie features a North Star alignment window that you point at Polaris. The Polarie can also use a polar scope for alignment. Once set, the Polarie tracks with the motion of the stars to eliminate "star trailing" on your images resulting in sharp images of the Universe. The Polarie uses very accurate stepping motors and operates on 2 "AA" batteries. Polarie is designed to not only be functional, but also to be compact and attractive. The Polarie has a smooth, good looking design. The unit has no visible screws and although, not waterproof, it is designed to function in most weather conditions.