Gskyer Telescope, EQ80900 Astronomy Telescope, Germany Technology Telescope 100%New, Specialized supply for scientists to research professional astronomy and Natural Science German equatorial mount,and Comes with Stainless Steel Tripod and accessory tray Aperture: 80mm(3.2"). Focal Length: 900mm. Focal Ratio: f/11.25. Rack-and-Pinion Focuser &Low (25mm) , medium(10mm), high (5mm) magnification eyepieces give you variety for any viewing situation & 3x barlow lens doubles the magnifying power of each eyepiece All-glass optical components with high transmission coatings for enhanced image brightness and clarity and stars, with detailed instructions for our every customer, it is very easy and quick assemble. And become favorite by every one One-year warranty and lifetime maintenance ,we will provide the best service and reliable products to our every customer. And best quality at this reasonable price,please ease to use