Tracker systems are disclosed, the system mountable on a device having one or more rotary component, comprising: an optical tracker having circuitry that causes the optical tracker to receive and filter optical signals including UV, visible, and infrared wavelengths so as to be more sensitive to UV wavelengths than the visible and infrared wavelengths. The optical tracker having circuitry transmitting data indicative of a distance; and one or more computer processor that utilizes the optical tracker determined distance to determine track error of the one or more rotary component of the device, and transmits data indicative of the track error.