If you have never used a telescope and do not know where to start, the KSON KTA40080BP is your best choice. It can be used for both astronomical and terrestrial observations. It is mounted on an camera tripod with pan head. It's easy use up and down, left and right movement, makes tracking objects easy with its alt-azimuth camera mount. The camera tripod features a 4-section legs with very compact size, fully adjustable, pre-assembled aluminum tripod with carrying bag. The KSON KTA40080BP optical tube assembly features a 400mm focal length. The objective lens is an 80mm two elements achromatic (color correct crown & flint) objective lens with fully coating. The tube itself is aluminum, painted flat black internally, and fully baffled for excellent visual and CCD imaging. The optical tube assembly is diffraction limited at λ/4 (1/4 wave in Sodium light). The diagonal consists of polished erecting prism which ensures good image in the meantime erect image. The finderscope is a 3x20 reticled Finder which help you by getting the observer behind the telescope without losing the surrounding field of view when targeting objects day and night. Included with the KTA40090BP are a Kellner 25mm and Plossl 10mm eyepiece as well as a 3x 2-element Achromatic Barlow, as a upgrade kit. KTA40080BP telescope allows you to see the lunar craters, sunspots, atmospheric flows of Jupiter and its four largest moons, phases of Venus, rings of Saturn, and binary stars with a separation of 1.45 arc seconds between their distance, dim 11 magnitude stars, and even the bright nebulae and other galaxies. 400mm x 80mm Optical Tube Assembly, with multi-coating on every surface of lens Diffraction limited Optical Tube Assembly (λ/4) Fully Adjustable, Pre-assembled Aluminum Tripod with 4-section, shortened model with compact package Camera tripod with pan head 3x20 finderscope with reticle Two 1.25″ (31.7mm) Eyepieces: Kellner F25mm and Plossl 6mm 1.25” 3x 2-element Achromatic Barlow Helical rack and pinion focuser Erecting prism diagonal With backpack One Year Warranty Carton size: 68x31x17cm Quantity: 1pc Gross. Weight.: 3kg