The Celestron Travel Scope 50 Telescope was designed with traveling in mind and is made of the highest quality materials to ensure stability and durability but at the same time offering exceptional value. All this adds up to a telescope that gives you a lifetime of pleasure with a minimal amount of maintenance. Compact & portable design with ample optical performance, the Celestron Travel Scope 50 Telescope is ideal for terrestrial as well as casual astronomical observation. Features: All coated glass optical elements for clear, crisp images. Erect image diagonal so that your views are correctly oriented. Smooth functioning altazimuth mount with easy pointing to locate objects. Preassembled aluminum full size photographic tripod ensures a stable platform. Quick and easy no-tool set up. The telescope and tripod fit inside the custom backpack (included) for easy traveling and storage. Quick Overview: - All coated glass optical elements for clear, crisp images - Erect image diagonal so that your views are correctly oriented - Smooth functioning altazimuth mount with easy pointing to locate objects - Preassembled aluminum full size photographic tripod ensures a stable platform - Quick and easy no-tool set up - The telescope and tripod fit inside the custom backpack (included) for easy traveling and storage Optical Design Refractor Aperture (mm) 50 mm (1.97 in) Focal Length 360 mm (14 in) Focal Ratio 7.2 Focal Length of Eyepiece 1 (mm) 20 mm (0.79 in) Magnification of Eyepiece 1 18 x Focal Length of Eyepiece 2 (mm) 8 mm (0.31 in) Magnification of Eyepiece 2 45 x Finderscope 2x20 Highest Useful Magnification 118 x Lowest Useful Magnification 7.14 x Limiting Stellar Magnitude 11 Resolution (Rayleigh) 2.79 arc seconds Resolution (Dawes) 2.32 arc seconds Light Gathering Power (Compared to human eye) 51 x Optical Coatings Fully Coated