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