SV48P Achromatic Telescope Specs: 90 mm aperture; 500mm focal length; compared with 70mm and 80mm; 90mm telescope has more light input and a wider field of view; observe the moon and deep space; which is very suitable for astronomy beginners Double speed focuser; the 2 inches rotatable double speed focuser; gear ratio of 1:10; precise adjustability for smooth operation The focusing mount with metal interface has higher interface accuracy; guarantees the parallelism of the optical axis; and enhances the observation experience Fully multil green coated lens; fitted with achromatic glass for good edge-to-edge viewing; fully multi green coated lens maximize light transmission eliminating false color 360 degrees rotation; convenient for photographic composition and visual observation; loosen the screw; the focus can be rotated 360 degrees; you can achieve astronomical shooting Brand SVBONY Model SV48P Aperture 90mm Optic Coated FMC Objective Lens Doublet air spaced achromatic design Glass ZF4/K9 Focal Length 500mm Focal Ratio F/5.5 Eyepiece Barrel Diameter 2-inch (1.25-inch adapter) Focuser 2-inch RAP Double-speed Focuser Tube Outer Diameter 108mm Net Body Weight 2730g / 96.3oz Packing 490*215*230mm
