Coronado Instruments has been developing H-alpha solar filters and associated technologies for the professional market for well over forty years. Now they are providing creative and innovative optics specific to the needs of both the amateur and professional solar observer.
OPT is the largest dealer for Coronado solar telescopes and solar filters in the United States. We carry the full selection of Coronado solar products like the innovative SolarMax II H-alpha telescope systems as well as h-alpha solar filters that attach to your current telescope with the addition of an adapter. OPT also carries the amazing Coronado PST (Personal Solar Telescope), which has made h-alpha observing highly accessible with their low prices and exceptional quality.