SV550 122 APO Telescope Refractor plus Field Flattener for Astrophotography

Features

• 1. The SV550 APO Triplet refractor with 122mm aperture and f/7 focal ratio, a great travel telescope for observation and astrophotography  2. Fully multi-coated triplet apochromatic optics using an ED center element 3. 2.5" dual-speed rack-and-pinion focuser 10:1 ratio fine focusing with M63x1 female thread for adaptions 4. Retractable lens shade/dew shield-the APO even fits into the hand luggage 5. CNC multi-function Dual hinged split tube rings with a 300mm versatile V-style dovetail, support mounting of various accessories