Skywatcher Skymax-127 OTA Maksutov-Cassegrain Telescope is a compact and powerful telescope for planetary and deep-sky observations. The telescope can also be used very well for time observations and photography. With 127mm opening, the telescope already collects more than 55% more light than a refractor with 102mm opening. The telescope is still very portable. The tube is only 33cm long, despite the considerable focal length of 1500mm. The Skymax-127 features a compact but extremely powerful, high-contrast, high-resolution diffraction-limited optical system. It feature high-transmission multi-coatings are employed on all optical surfaces for optimum performance. It is well supported by compact parallactic and azimuthal mounts. Features: Red Dot Finder 1.25"/31.7mm Star Diagonal Built-in Polar Alignment Scope Holder 90º Diagonal Multicoated Lenses Extremely powerful, high-contrast, high-resolution diffraction-limited optical system Focusing by Moving Primary Mirror 55% more Light gathering than 102mm Specification: Manufactured: Skywatcher Magnifications (with eyepieces supplied): x50 & x150 Highest Practical Power (Potential): x254 Diameter of Primary Mirror: 127mm Type: Maksutov-Cassegrain Eyepieces (1.25"): 10mm & 25mm Max aperture (Tele): (f/11.81) Telescope Focal Length: 1500mm