SKYWATCHER SKYMAX 180 MAKSUTOV-CASSEGRAIN OTA180mm 2700mm Skymax 180 Maksutov Cassegrain OTA High Performance Optical Tube Assembly The Sky Watcher Skymax 180 Maksutov Cassegrain OTA Telescope is perfect for the seasoned enthusiast moving up to a more powerful scope. The larger aperture enables more detailed views of our close planetary neighbours and sharper images of deep space objects. Maksutov Cassegrain Advantage This telescope design has the inherent advantage of minimizing coma