Optical Performance The telescope is equipped with a high quality GSO parabolical primary mirror. We guarantee a diffraction limited performance. As a result you get sharp and contrasty images of the moon and the planets as well as impressive views of countless deep sky nebulae and galaxies. Many details can be seen in these nebulae High Quality Focuser The GSD doesn't have a cheap rack and pinion focuser, but uses a high quality Crayford focuser. Even at high magnifications focusing is easy and smooth. The focuser is compatible with 2" and 1.25" accessories Mechanical Quality The metal tube is very sturdy. The primary and secondary mirror cells hold the optical elements securely in place. As a result the GSO Dobsonians do not easily lose collimation Simple Operation Using a Dobsonian is very simple. The telescope is moved manually around a horizontal (azimuth) and vertical (altitude) axis. An azimuth roller bearing and an altitude Teflon friction bearing are used to offer good smoothness of operation 2" Crayford Focuser The Dobsonian uses a 2" Crayford focuser for a very precise and smooth focusing motion. Even at high magnifications you will precisely find focus. The focuser is compatible with 2" and 1.25" accessories Tube Dimensions & Weight Metal tube - length 115cm - diameter 23cm - weight 9.5kgs Rocker Box Dimensions & Weight Height 60cm - Diameter 50cm - Weight 11.2kgs Scope of Delivery -- Optical Tube with 2" Crayford focuser -- Rockerbox with azimuth teflon bearing -- 25mm Plössl eyepiece -- 6x30 finderscope - multi-coated -- integrated Cooling Fan for faster cooling
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