Unleash the power of your smartphone to take you on a guided tour of the night sky—no telescope experience required. Award-winning and patent-pending StarSense sky recognition technology uses your smartphone to analyze star patterns overhead and calculate its position in real time. StarSense Explorer app automatically generates a list of objects currently visible. View planets, brighter nebulae and galaxies, star clusters, and double stars from the city. Or take your telescope to darker skies to view faint, deep sky objects. Manual altazimuth mount with altitude slow motion adjustment with a sliding rod makes it easy to follow the on-screen arrows to your desired target. When the bullseye turns green, it’s ready to view in the telescope’s eyepiece. 70mm refractor with fully coated glass optics for bright, sharp views. Includes 25mm and 10mm eyepieces, 2x Barlow Lens, StarSense smartphone dock, erect image diagonal, a red dot finderscope (in case you want to use the telescope without your phone), and a full-height tripod. Optical Design: Refractor Aperture: 70mm (2.76") Focal Length: 700mm (27.56") Focal Ratio: f/10 Focal Length of Eyepiece 1: 25mm (0.98") Magnification of Eyepiece 1: 28x Focal Length of Eyepiece 2: 10mm (0.39") Magnification of Eyepiece 2: 70x Barlow Lens: 2x (1.25") Finderscope: StarPointer red dot finderscope Star Diagonal: Erect image 90° (1.25") Optical Tube: Aluminum Highest Useful Magnification: 165x Lowest Useful Magnification: 10x Limiting Stellar Magnitude: 11.7 Resolution (Rayleigh): 1.99 arc seconds Resolution (Dawes): 1.66 arc seconds Light Gathering Power (Compared to human eye): 100x Optical Coatings: Fully Coated glass optics Optical Tube Length: 812.8mm (32") Optical Tube Diameter: 76mm (2.99") Optical Tube Weight: 3.6 lbs (1.63 kg) Dovetail: None MOUNT INFO: Mount Type: Manual Alt-Azimuth Height adjustment range (includes mount and tripod): Aluminum, 1320.8mm (52") max height Tripod Leg Diameter: 31.75mm (1.75") steel