Telescope, Astronomical Refractor Telescopes with Tripod and Phone Adapter, 70mm Aperture 300mm Telescope, Professional Telescope for Kids Beginners Adults Features: *High-quality large-diameter vision is clearer and brighter. *It is more convenient to use a 48-degree reflector to see the sky at the zenith. *5X24 finder scope has a built-in cross scale to accurately capture celestial observations. *The main mirror can also be connected to the phone, which can adjust the height and move left and right. Product Specifications: Optical system: refraction Caliber: 70mm Focal length: 300mm Focus ratio: F5.7 Eyepiece: 120mm Magnification: 15X Eyepiece: 26mm Magnification: 50x Finder: 5x24 Zenith Mirror: 48° Erect Image Zenith Mirror Combination 1.5X multiplier: 22.5 times/75 times Linear field of view: 61ft (19m) Optical coating: antireflection coating Barov teleconverter: 3X/1.5X Exit pupil diameter: 2.2mm Resolution: ≦4.0 Distortion: 4.9% Gathering power: 73.5X Viewing angle: 1.30 degrees Tracking system: platform equatorial mount Tripod aluminum alloy tripod: 46.5-56.5cm Combination 3X multiplier: 45 times/150 times Packing List: 1*Main mirror body 1*tripod 1*Objective lens cover 1*Finder bracket 1*Zenith Mirror 1*Moonlight Filter 1*Eyepiece group 1*Adjusting lever 1*3X extender 1*1.5X extender 1*Finder 1*Photo folder