EXPLORE SCIENTIFIC Dobson Telescope N 254/1270 Ultra Light 10″

Ultra Light Dobsonian 254mm (10″) 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 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.

Dobsonian telescopes are among the most practical instruments in astronomy. They are of simple construction and yet a brilliant idea. They essentially consist of two parts: firstly the optics, which in most cases is a solid tube or truss tube design; and secondly the mount, a wooden box (also called a ‘rocker box’) which sits on the ground and into which the telescope is inserted. This design allows you to begin observing sessions immediately without first having to spend time setting up and aligning a complicated mount. The basic idea of the Dobsonian design came from the wish to have a big telescope at a low price, a wish that has succeeded brilliantly. A true fan base has developed since the invention of the Dobsonian telescope which is dedicated to these instruments and their fascinating simplicity and to the idea of ‘high performance at low price’.

Explore Scientific offers lightweight tubular aluminium frame which is optimised for transport and quick deployment.

• The mount for the secondary mirror can securely adjusted without tools.
• The primary mirror can be adjusted anteriorly during observation and sits within a modern cell with radial roller bearings and a 9-point flotation system
• Large altitude bearings allow for quiver- and judder-free movements, even at large magnifications
• The cap and altitude bearings fit inside the rockerbox, the mirrorbox has a lid for transportation, so that only two aluminium boxes and one bundle of poles have to be transported.
• Extremely high structural rigidity!
• Dew-resistant due to aluminium construction: No more bulging press boards thanks to exclusive use of aluminium and other metals
• Two radial primary mirror fans for rapid temperature adjustment

Dimensions for the 254/1270 Ultra Light:

• Transportation: Rockerbox 395x395x310mm; Mirrorbox 330x330x295mm; Pole length approx. 700mm
• Eyepiece height whilst pointing at zenith: approx. 1.15m
• Overall weight: 26.4kg; including mirror housing: 14kg; Upper section with secondary mirror + rockerbox: 9.7kg; 4 pairs of struts: 1.5kg; Pair of altitude bearings: 1.2kg

You would be hard pressed to find a more easily transportable telescope of this size, especially one with this level of adjustment stability and user friendliness. The latter of which is guaranteed by a very comprehensive user manual.

Modern 254mm truss-dobsonian telescope in full aluminium construction

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: Universal finder slot to enable an easy finder upgrade
• 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 Delivery

• Truss Dobsonian Telescope
• LED finder with standard finder slot
• Stray light shield for secondary cage
• Main mirror collimation tool
• Battery compartment with bag for fans
• Extension tube for focuser
• Reducer 2″/1.25″
• Manual