The Sky-Watcher Skymax-127mm f/11.8 AZ-Gti Wi-Fi Go-To Maksutov-Cassegrain Telescope is ideal for the observation of double-stars, the surface detail of the Moon & bright planets. Its high-resolution, long focal length optical system is multi-coated to maximise contrast & image sharpness. The Skymax-127 can be controlled wirelessly with your smartphone or tablet using the free Syn Scan App for i OS or Android.