It's like having your own personal tour guide of the night sky. Within minutes of setting up the telescope, you'll be navigating the sky with confidence. This larger-aperture Celestron StarSense Explorer is ideal for beginners, thanks to the app's user-friendly interface and detailed tutorials. Leave complicated star charts, imprecise planetarium apps, and computerized mounts behind. With StarSense Explorer, locating objects has never been easier, faster, or more accurate. Celestron has reinvented the Tabletop Dobsonian telescope with StarSense Explorerthe first 130mm Tabletop Dobsonian that uses your smartphone to analyze the night sky and calculate its position in real-time.