Sky Watcher EvoGuide 50DX 50mm Guide Scope APO Doublet Refractor Lightweight Easy Mounting Astrograph

EXPERTLY MATCHED GLASS: This small, lightweight 50mm f/4.8 Apochromatic Doublet refractor uses expertly matched ED glass to deliver dramatic, coal-black skies and faithful, contrast-rich views MOUNT ANYWHERE: The EvoGuide 50 DX includes two mounting adapters: a machined aluminum finder stalk compatible with all Sky-Watcher finder brackets, and a V-style mounting rail 242mm FOCAL LENGTH, f/4.8, 1.25” helical focuser, finder stalk, Vixen-style mounting plate, prime focus ring BUILT-IN T-THREADS: By using an optional adapter (not included), the EvoGuide 50 DX will turn into a fast, low-focal length astrograph