The Galileo 600mm x 50mm Refractor Telescope With Stand makes an excellent first refracting telescope for your kids or grand kids. It is mounted on an Altitude Azimuth yoke mount that makes it easy use up and down, left and right movement is great for beginners and casual star gazers alike. The Mount is attached to a very sturdy, fully adjustable, pre-assembled metal tripod with rubber feet. The optical tube assembly features a 600mm focal length and the objective lens is a 50mm two element achromat (color correct crown and flint) air spaced objective lens. The tube itself is aluminum, painted flat black internally, and fully baffled for excellent visual imaging. The finderscope is Cassini’s Mars’ Eye electronic Finderscope, which helps by getting the observer behind the telescope without losing the surrounding field of view when targeting objects. Terrestrial viewing is extremely easy due to the included 90° diagonal mirror which produces a totally erect image. It also includes a 6mm eyepiece and a 20mm eyepiece.