Ursa Major 8" f/6 Dobsonian

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Ursa Major 6" and 8" Dobsonians share the same superb GSO parabolic mirrors as StellaLyra Dobsonians but have a more traditional Dobsonian base (Teflon pads & spring tensioner) single speed focuser and 'straight' finder-scope.

This has enabled us to achieve lower prices, making them an excellent choice for anyone starting astronomy. 

About this product

Superb Value 8" f/6 Dobsonian telescope! 

Designed and manufactured to a very high standard by Guan Sheng Optical (GSO) in Taiwan. 

With 8" aperture this easy to use Dobsonian telescope is an excellent choice for visual astronomy.

In good seeing conditions you can observe Mars with surface shading and polar cap. Jupiters weather bands and a number of its Moons, Saturn with its rings (including the Cassini division) and Venus and its phases, are all clearly visible. 

Viewing the lunar surface will feel like you can reach out and scratch plaster! 

The 8" aperture (1.78x more light gathering ability than 6") also provides excellent views of many deep sky objects, like M42 / Orion Nebula or Galaxies like M81 and M82.

For many owners this telescope will provide a lifetime of observing. 

Ursa Major 6" and 8" Dobsonian telescopes are fitted with GSO aluminised parabolic primary mirrors with minimum 93% reflectivity and a silicon-dioxide protective overcoat to ensure the surface remains bright for years to come.  

Collimation knobs on the primary mirror cell provide easy collimation adjustment, without tools, and an integrated fan provides faster cooling. 

This 8” model also features a surprisingly good CNC-machined (not cast metal) 2" Crayford focuser for smooth, accurate focusing and zero image shift.

Fully multicoated 1.25" 9mm and 25mm Plössl eyepieces are included so views will be clear and sharp, from the outset.  

The Dobsonian base is delivered flat-packed and is easy to assemble. 

Teflon pads in both axis provide smooth movement and tension can be adjusted to achieve just the right amount of resistance.

In Altitude a spring tension system prevents the telescope from moving during eyepiece changes.

Telescope Field of View Simulator

What's in the box

• 8" Newtonian Reflector Telescope
• Dobsonian Mount
• 8x50 Finderscope
• 2" to 1.25" Adapter
• 2" 35mm Extension Tube
• 9mm 1.25" Super-Plossl Eyepiece
• 25mm 1.25" Super-Plossl Eyepiece

Specifications

Downloads / Manuals

Manual

Ursa Major 8" Dobsonian Assembly Manual

Customer reviews

FAQ

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