General Features Optical Design: Refractor Aperture: 80mm(3.2in) Focal Length: 400mm(15.75in) Focal Ratio: F5 Eyepiece1: 25mm(0.98in) Magnification1: 16X Eyepiece2: 10mm(0.39in) Magnification2: 40X Eyepiece3: 5mm(0.196n) Magnification3: 80X Max Magnification: 120 Finderscope: 6*30 Zenith Mirrors: 48°Erecting BAK7 prism Mount: AZ Altazimuth Mount Optical coating: Multi Antireflection Green Film Barlow lens: 3X Resolution: ≤3.1 Angular Field of View: 2°24″ Tuble connection: Hook Dovetail Plate Tripod: 1.27inch stainless steel Tripod Shipping Weight: 8.6Kg(18.95 lb) Item Dimensions:3.97in*1.3in*0.85in Product Description Ideal for the observer who views both astronomical and terrestrial objects, the Gskyer Infinity Series combines an altazimuth mount and quality optics for a superb value. For newcomers and beginners alike, these refracting telescopes are a great way for you to discover the cosmos and the outdoors. You’ll discover more with the Gskyer Infinity Series.If you’ve never owned a telescope before, the Infinity 80mm Refractor is a great telescope to get started in astronomy. This 80mm (3.2″) aperture gives bright, sharp images for both land and celestial objects. Whether you’re viewing the rings of Saturn, the moons of Jupiter, surface details on the Moon, or terrestrial objects, the Infinity 80 Refractor allows the first-time observer to explore the world, solar system, and beyond.