Celestron PowerSeeker 50 AZ Refractor Telescope Quick and easy no-tool setup Slow motion controls for smooth tracking Erect image optics - Ideal for terrestrial and astronomical use Fully coated glass optical components with high transmission coatings for enhanced image brightness and clarity 3x Barlow lens triples the magnifying power of each eyepiece Accessory tray for convenient storage of accessories BONUS Astronomy Software download with a 10,000 object database, printable sky maps and 75 enhanced images