Explore Scientific 92° LER Eyepiece 12mm (Refurbished)

Ultra Light Dobsonian 406mm GENERATION II - with completely redesigned and improved construction. No telescope type has influenced amateur astronomy as radically as the dobsonian telescope. Before the introduction of this telescope type by John Dobson the vast majority of amateur telescopes were small inadequate refractors on shaky mounts - just good enough to show the polar regions on mars or the rings of Saturn. Bigger telescopes, like the Schmidt-Cassegrain telescopes, were restricted to the relatively small group of amateurs that could afford them.The brilliant combination of simple - but effective - mechanics and the largest aperture available led to a worldwide triumph of this concept. No other telescope type offers you so much light for your money as a good dobson. We have taken the motto "held together by gravity and driven by yoghurt power" and offer a modern version of the classic - designed by amateur astronomers for amateur astronomers. Despite its large aperture the telescope can be transported easily even in small cars and is assembled within minutes without tools. The construction was optimized for maximum rigidity with a minimum of mass. The combination of big altitude wheels and a optimized aluminium-sandwich construction allows for small movements even at high magnifications. The focus position is already positioned to accept our coma-corrector. The ideal workhorse for the deep-sky enthusiast. A telescope with 406mm aperture gathers more than 3300-times more light than the naked eye. Details on planetary surfaces stand out even to unexperienced observers, and countless deep-sky objects show details. Bright globular clusters are resolved down to the core and the view of the lunar terminator will provide a unforgettable experience. Dimensions for mobile use: Rockerbox 550mmx550mmx330mm; Mirrorbox 480mmx480mmx300mm; Trusses approx. 1250mm Eyepiece Height while pointing at zenith approximately 1,63m. 16“ Total net weight: 38,4 kg; 16“ Mirror Box: 23,8kg; 16“ Secondary Cage + Rockerbox: 10,5 kg; 16“ 4 Truss pairs: 2,5kg; 16“ Altitude Wheels: 1,6kg ; Focuser thread: M54 x 0.75 mm ; Backfocus: 45mm behind the 2" eyepiece holder. 35mm when the 1.25" adapter is mounted SPECIFICATIONS Truss-Dobsonian Telescope in full Aluminium construction NEW: Slider bearings made from TEFLON und GFK for smooth and precise movement NEW: Improved main mirror cell with completely redesigned mechanics NEW: Altitude bearings with new designed brake and friction system NEW: Larger feet to improve stability NEW: Universal finder slot to enable an easy finder upgrade NEW: Counter-weight system included - 2 x 1.0 kg NEW: Quick-lock fasteners with new springloaded design for comfortable use NEW: Powder-coated yellow altitude wheels to improve durability NEW: Laser engraved central mark on main mirror SCOPE OF DELIVERYTruss Dobsonian TelescopeLED finder with standard finder slotStray light shield for secondary cageMain mirror collimation toolBattery compartment with bag for fansCounter-weights 2 x 1.0 kg Extension tube for focuserReducer 2"/1.25"Manual