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A high quality Dobsonian telescope with parabolic optics with 300 mm aperture. GSO Dobsonians have mirrors in the upper quality range and convince with a low price. This telescope is ideal for deep sky observation.

The largest Dobsonian from GSO with a full tube. You need a station wagon or delivery van for transport. but a 300 mm aperture already offers unforgettable observation experiences. Nebulae and galaxies are already shown with details that are more reminiscent of astrophotography.

♦ High quality parabolic optics with 300 mm aperture and 1500 mm focal length.

♦ 94% mirror coating for a brighter, high-contrast image.

♦ Exact 2 "-Crayford focuser for precise focusing - with reduction to 1.25".

♦ Stable metal tube and adjustable mirror mounts for optimal imaging even after many years.

♦ Good expandability even for astrophotography.

♦ Active main mirror ventilation accelerates the temperature adjustment of the telescope.

  • Technical Specifications

    Optics :Parabolic primary mirror made of BK7
    Opening :300 mm - 12 "
    Focal length :1500 mm
    Focal ratio :f / 5
    Secondary mirror diameter :70 mm
    Shadowing by the secondary mirror :23.3% linear
    Adjustment aid :Center mark on the main mirror
    Focuser :2 "-Crayford pull-out with ring clamp and adapter to 1.25"
    Tube :Metal tube with reinforcement rings
    Tube length :1450 mm
    Tube diameter :356 mm
    Tube weight :19.5 kg
    Rockerbox weight :13.2 kg
    Rockerbox dimensions :Height 640 mm / diameter 635 mm
    Storage :Height with spring preload / azimuth with ball bearings

    In The Box :

    ♦ GSO Dobsonian telescope
    ♦ Rockerbox - azimuthal mount
    ♦ Fan with battery holder 
    ♦ 8x50 viewfinder with achromatic optics
    ♦ 25 mm 1.25 "Super Plössl eyepiece
    ♦ 35mm 2" extension
    ♦ Adjustment instructions and assembly instructions

GSO 12 inch DOB Telescope (Silver)

SKU: GSO 12 inch DOB Telescope (Silver)

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