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EXPLORE SCIENTIFIC Ultra Light Dobsonian 254mm

Product 9 of 29
Explore Scientific

EXPLORE SCIENTIFIC Ultra Light Dobsonian 254mm

Item #: 0116925
Modern 254mm truss-dobsonian telescope in full aluminium construction
  • Modern secondary mechanics - the collimation is easily achieved without tools and keeps collimation well during transports
  • Modern primary mirror cell - the telescope mirror can be collimated from the front while looking through the eyepiece and is supported by a modern floatation system with radial roller bearings
  • Large altitude wheels provide smooth and precise movement even at high magnifications
  • Secondary unit and altitude wheels fit into the rocker box and the mirror box includes a cover for transport so that the whole telescope breaks down into only two aluminium cases and the trusses
  • Extremely high rigidity construction
  • Dew-resistant because of aluminium construction: no deforming press board due to the exclusive use of metals
  • Lightweight: the aluminium profile/aluminium plate construction reduces the weight to about half of the mass of most press board designs of this price range
  • Two large radial fans for fast thermal equilibrium
  • Scope of delivery: Telescope, Manual, Reducer 2"/1.25", Red dot finder, Stray light shield for secondary cage, Main mirror collimation tool, Battery compartment with bag for fans, Extension tube for focuser
in stock, ready for shipping in 1-2 working days.
749,00 € *

Technical Data

Field of application
Field of application
  • Deep Sky Observation
  • Lunar observation
  • Planetary observation
Focus group
Focus Group
  • Advanced Amateurs
  • Visual enthusiasts
  • Beginners
Product family
Product Family Reflector telescope
Optical design Newtonian Reflector
Magnification up to 500
Material Primary mirror BK-7
Primary mirror diameter 254 mm
Objective diameter 254 mm
Focal length 1270 mm
Aperture ratio 5
Angular resolution 0.51 arc seconds
Finderscope DeLuxe Red Dot Finder
Mount Type Dobson
Material OTA Aluminium
Transportability very good
Focusing system 2" Rack-and-Pinion Focuser with helical gearing and 10:1 reduction
Colour black
Ext. warranty after online registration 5 Years
Eyepiece Barrel Diameter 50.8 mm
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 254mm aperture gathers more than 1300-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 395mmx395mmx310mm; Mirrorbox 330mmx330mmx295mm; Trusses approx.700mm
Eyepiece Height while pointing at zenith approximately 1,15m; 10“ Net total weight: 26,4 kg; 10“ Mirror Box: 14 kg; 10“ Secondary cage +Rockerbox: 9,7kg; 10“ 4 Pairs of trusses: 1,5kg; 10“ Altitude Wheels: 1,2kg ; Focuser thread: M54 x 0.75 mm

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