The Celestron PowerSeeker 80AZS Telescope is designed to give the first-time telescope user the perfect combination of quality, value, features and power. The PowerSeeker is quick and easy to set up. Their sturdy, collapsible alt-azimuth mounts are perfect for tracking objects in the night sky, and are ideally suited for terrestrial viewing as well as astronomical use. All PowerSeekers include a full range of eyepieces, plus a 3x Barlow lens that provides an increase in viewing power hundreds of times greater than that of the unaided eye. They are designed and manufactured using all fully coated glass optical components with high transmission coatings for enhanced image brightness and clarity. Features - Low-priced spotting scope with azimuthal mount for ease-of-use, ideal for first-time telescope users - The erect image optics are perfectly suited for terrestrial (land) viewing as well as astronomical use - Aperture (mm) 80 mm - Finderscope - Azimuthal mount - Aluminium tripod Specifications Optical Design Refractor Aperture (mm) 80 mm (3.15 in) Focal Length 400 mm (16 in) Focal Ratio f/5 Focal Length of Eyepiece 1 (mm) 20 mm (0.79 in) Finderscope 5x24 Star Diagonal Erect Image Diagonal Mount Type Altazimuth Tripod Aluminum Tripod Leg Diameter 1 in Highest Useful Magnification 189x Lowest Useful Magnification 11x Limiting Stellar Magnitude 12 Resolution (Rayleigh) 1.74 arc seconds arc seconds Resolution (Dawes) 1.45 arc seconds arc seconds Light Gathering Power (Compared to human eye) 131x Optical Coatings Multi-Coated Warranty 2-year Telescope Warranty