Soleye "RED" is an 300/1200 F/4 Newtonian reflecting solar telescope for high-resolution H-alpha imaging. =inter_regular[color=#ffffff]Thanks to a completely unique, world-first Soleye coating with high surface accuracy, the primary mirror has extremely low heat absorption and zero thermal expansion, making it the optically best performing primary in this size category in H-alpha high-resolution solar photography.[/color]