Sky-Watcher Sky Max-127 Auto 127mm (5") f/1500 Supa Trak Maksutov-Cassegrain Telescope. The Skymax-127 Maksutov-Cassegrain OTA excels for high-power Lunar & Planetary observations, double-star observations, as well as being suitable for terrestrial daytime observations. The Skymax-127 features a compact but extremely powerful, high-contrast, high-resolution diffraction-limited optical system. High-transmission multi-coatings are employed on all optical surfaces for optimum performance. The Auto-Tracking telescope is an evolutionary alt-azimuth mount that allows automatic tracking of celestial objects without complicated add-ons. It can be used not only for astronomy but for terrestrial applications as well. It is fast to set-up & very simple & easy to use. Overall this is a sizzling telescope package offering a truly phenomenal, ground-breaking combination of quality & value for your money.