A motion-sensing device is used to track motion of an object. The motion-sensing device includes an optical correlator, a motor system and a controller. The optical correlator has an imager. The optical correlator provides a feedback signal that indicates motion of the object in at least one dimension based on detected movement of an image of the object from a first location within the imager to a second location within the imager. The motor system can move the imager. The controller receives the feedback signal from the optical correlator and uses the feedback signal to calculate motion of the object and to control the motor system to move the imager so that the image of the object is returned to the first location within the imager.