Spectrum Coatings utilizes their technology to accommodate a wide variety of uses for the unique properties of optical coatings, specializing in front surface mirror coatings for telescopes and astronomy. Our State of the Art, Ion Assisted Deposition process allows us to produce hard, durable oxide optical thin films without high-temperature substrate heating. These ultra-hard coatings are perfectly suited for the harsh environment that is indicative of telescope mirrors. We offer many types of coatings including protected aluminum and enhanced aluminum.