The Celestron PowerSeeker 70AZ 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 equatorial mounts are perfect for tracking objects in the night sky, and the collapsible alt-azimuth mounts are perfectly 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. Features - Quick and easy no-tool setup - Slow motion controls for smooth tracking - Erect image optics - Ideal for terrestrial and astronomical use - Fully coated glass optical components with high transmission coatings for enhanced image brightness and clarity - 3x Barlow lens triples the magnifying power of each eyepiece - Accessory tray for convenient storage of accessories - Low-priced spotting scope with azimuthal mount for ease-of-use, ideal for first-time telescope users Specifications Aperture (mm) 70 mm (2.76 in) Focal Length: 700 mm (28 in) Formula: Focal Ratio 10 Focal Length of Eyepiece 1 (mm) 20 mm (0.79 in) Formula:Magnification of Eyepiece 1 35 x Focal Length of Eyepiece 2 (mm) 4 mm (0.16 in) Formula:Magnification of Eyepiece 2 175 x Focal Length of Eyepiece 3 (mm) 10 mm (0.39 in) Formula:Magnification of Eyepiece 3 70 x Barlow Lens 3 x Finderscope 5x24 Star Diagonal 1.25\" Erect Image Diagonal Mount Type Altazimuth Accessory Tray No-Tool Tray with Eyepiece holder Tripod Aluminum Formula:Highest Useful Magnification 165 x Formula:Lowest Useful Magnification 10 x Formula:Limiting Stellar Magnitude 11.7 Formula:Resolution (Rayleigh) 1.99 arc seconds Formula:Resolution (Dawes) 1.66 arc seconds Formula:Light Gathering Power (Compared to human eye) 100 x Apparent Field of View 1.4 ° Linear Field of View (@1000 yds) 74 ft (23 m) Optical Coatings Fully-Coated Optical Tube Length 30 in (762 mm) Warranty 2-year Telescope Warranty