This Sky-Watcher 120mm (5") f/5 StarTravel telescope is a two-element, air-spaced, fully multi-coated objective achromatic refractor giving exciting "rich field" astronomical views. It provides excellent vistas of star fields, clusters, nebulae, galaxies, planets, the Moon and (with correct filtering or by projection) the Sun. It is also a fine terrestrial telescope when used with the provided 45 ° correct-image prism to correct for optical flip. Crisp images at a reasonable price make it an excellent beginners "first telescope" or a great travelling telescope for the more advanced observer. When compared to similar 80mm f/5 refractors this larger aperture model has more light collecting power at the same focal ratio and accepts 2" diagonals for awesome wide field views with only a slight amount of chromatic aberration. Weighing only 8.6 pounds and only 22 inches long the optical tube assembly (telescope) is incredibly portable. Being a refractor it is quick and easy to set up and the low- maintenance enclosed optics come fully collimated from the factory. The optical tube assembly comes with "tube mounting rings". These open to allow easy installation of the tube. The locks can be loosened during use to allow tube rotation and balancing. The included AZ3 adjustable aluminum alt-az tripod combines easy portability with stability. Slow-motion controls on both the vertical (altitude) and horizontal (azimuth) axes for precise targeting. The large accessory tray provides a convenient storage place for eyepieces and other gear. StarTravel kits come with a 1 ¼ inch 45° erect image prism, 10 and 25mm super eyepieces, and red dot finder. The AZ3 mount has geared slow motion controls, adjustable aluminum legs, and an 11-pound payload capacity while weighing only 8 pounds.