Maksutov-Cassegrain telescope. Aperture: 127mm. Focal length: 1500mm. Levenhuk SkyMatic 127 GT MAKMaksutov-Cassegrain telescope. Aperture: 127mm. Focal length: 1500mm.Thanks to Maksutov-Cassegrain optical design Levenhuk SkyMatic 127 GT MAK is a compact and yet powerful telescope that can be used for both planetary and deep-sky observations. Due to its advanced characteristics and the ability to carry out astrophotography sessions, experienced users may be most interested in this model. At the same time this telescope is a great value to amateur stargazers thanks to the built-in GoTo function.GoTo function provides for an automatic navigation to 42,900 celestial objects, which means you don't have to know the coordinates of a desired object on the celestial sphere. You can choose the object for observation with the help of a hand controller; everything else this smart telescope will do by itself. The azimuth mount with the GoTo function can also be connected to a PC (the cable comes in the kit), which allows you to control the telescope using planetarium software. The SkyMatic GoTo mount can be powered by an external 12V battery pack.GoTo function is useful for experienced astronomers as well since it saves more time for an actual observation instead of looking through the sky charts.Specifications:Optical design: Maksutov-CassegrainPrimary mirror diameter, mm: 127Focal length, mm: 1500Focal ratio: f/11.8Highest practical power, x: 250Resolution threshold: 1.1"Limiting stellar magnitude: 12.5Eyepieces: SL 10mm, SL 26mmTripod: steelTripod height (adjustable), in: 24.8-45.3Mount controls: automaticHand controller: SynScan AZ with automatic navigationTracking rate: sidereal, lunar, solarNavigation system alignment: brightest star, two-starPointing accuracy: up to 10 arcminutesBarrel diameter: 1.25"Finderscope: 6x30Power supply: 1A, 11-15V DCOptical tube dimensions , in: 5.6x14.6Optical tube weight, lbs: 7.3Motor type: servomotorsTracking mode: dual-axis tracking