Since 1987, co-founders Vilma and David Anderson have operated Rayleigh Optical Corporation as a worldwide fabricator of large custom precision optics. The Hanover, Maryland, company specializes in spherical and aspherical components from 0.25 to 1.5 meters, with its mirrors and lenses used at premier astronomical sites including Pan-STARRS and the Dark Energy Survey Instrument. It also extends its shop and expertise to amateur telescope makers through its planned Center for Amateur Optics and Telescope Making.