Sky-Watcher 200mm f/5 Black Diamond Dual Speed with advance vx goto mount

Sky-Watcher 200mm f/5 Black Diamond Dual Speed with advance vx goto mount

Dual saddle plate is compatible with narrow CG-5 dovetails and wider CGE dovetail. Also compatible with Vixen format dovetails longer than 100mm, but not compatible with Losmandy D format plates.