SkyWatcher Star Discovery 127mm Maksutov-Cassegrain Telescope with WiFi MountThe 127 Star Discovery Maksutov Cassegrain is a compact and powerful optical design that combines a front meniscus lens and two mirrors. The optical tube is closed by the front meniscus, keeping the mirrors protected from atmospheric agents such as humidity, dust and pollution. The tube is short but the focal length is long allowing high magnification with the standard eyepieces. With maximum practical magnification of 254x , this Sky Watcher