This is a second hand Celestron 6SE GOTO telescope in superb condition with many extras. It is an excellent telescope for experienced observers and beginners alike. Marvel at the depths of the universe with the Celestron NexStar 6 SE computerized telescope. The outstanding electronic and optical features are suitable for both beginners and seasoned astronomers. The digital telescope can be connected to a Windows computer and comes with CD-ROM for software installation. The f 10.0 aperture and 15 cm focal length collects 44% more light than regular 5-inch telescopes, for a bright and clear image.