Alpine Astronomical Baader Diamond Steeltrack Focuser Adapter for Refractors with 97mm Threads

Use this Alpine Astronomical Baader Diamond Steeltrack Focuser Adapter to properly connect your precision Crayford focuser to Refractors with 97mm inner threads, including many Celestron and Synta tubes. This is the adapter ring only and requires the optional BDS-RT Diamond Steeltrack focuser for refractor-style optical tube assemblies.