Set your telescope, spotting scope, or any tripod on the iOptron Vibration Suppression Pads to reduce the vibrations caused by windy conditions, unsteady mounts/tripod, or accidental bumps which result in reduced image quality while observing or photographing. This set of three reduce both the time the scope resonates with vibration, and the amplitude of the vibrations. They work on most any surfaces including grass, dirt, concrete, asphalt, and wood.