Diagonal 2 Dielectric 99% SCT Diagonal

The new GSO 2'' CNC machined dielectric diagonals offer an excellent mechanical and optical quality, the special feature as follow: * Optical glass BK7 mirror blank* Reflectivity 99% dielectric coating in the Deluxe star diagonal mirror* Housing is an all metal construction * Brass compression rings both for 2'' and 1.25''* The barrel and the 1.25'' adaptor both offer a 2'' filter thread* Excellent mirror surface quality over 112λ Schmidt-Cassegrain Thread VersionInstead of the 2'' barrel with this mirror star diagonal features an SCT thread. You can attach this diagonal directly to Schmidt-Cassegrain telescopes and many Maksutov-Cassegrains, as long as there is a SCT thread on the telescope. Of course both mirror star diagonal come complete with a 1.25'' adaptor and brass compression rings for both 2'' and 1.25'' size.