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.
Descrizione
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.
Features:
Truss-Dobsonian telescope in full aluminium construction
Slider bearings made from TEFLON und GFK for smooth and precise movement
Improved main mirror cell with completely redesigned mechanics
Altitude bearings with new designed brake and friction system
Universal finder slot to enable an easy finder upgrade
Quick-lock fasteners with new springloaded design for comfortable use
Powder-coated yellow altitude wheels to improve durability
Laser engraved central mark on main mirror
The kit includes:
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
Brand
Explore Scientific
Warranty
2 years
EAN
4007922028927
Package size (LxWxH)
93x50x48 cm
Shipping Weight
29 kg
Optical design
reflector
Optical scheme
Newtonian
Optics material
BK-7
Objective lens diameter (aperture), mm
254
Focal length, mm
1270
Highest practical power, x
500
Aperture ratio
f/5
Resolution threshold, arcseconds
0.51
Eyepiece barrel diameter, in
1.25/2
Finderscope
red dot, LED
Focuser
2", 2-speed (10:1) rack & pinion, with helical gearing
Mount
Dobsonian
Optical tube material
aluminum
User level
beginners, experienced users
Observed object
planets of the Solar System and deep-sky objects
Reviews
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