SkyWatcher 300mm 12" Classic Dobsonian Telescope

The Ultimate Light Gatherer The Dobsonian telescopes are named after John Dobson, an amateur astronomer who designed a very simple but effective telescope, where the key factor is a large aperture for little money. His idea was to mount a Newton telescope on an easy-to-use alt-azimuth mount that does not need time-consuming alignments. The Sky-Watcher 12″ Dobsonian is a large aperture Newtonian reflector telescope with f/5 focal ratio, make it ideal for wide field and deep-sky observation. Big aperture means better light gathering power and with this Sky-Watcher Telescope you are able to see prominent deep-sky object such as nebulae, star cluster and many more. To top it off, the Sky-Watcher Classic Dobsonians are equipped with a 2″ Crayford focuser and focuser locking screw – to allow easy use of either eyepiece size. Tension Control SystemThe Tension Control System allows you to adjust the friction setting; to increase or reduce the amount of resistance when moving the tube on the wooden mount, so you always have the appropriate resistance. The secret of the design is to correctly balance the optical tube with the specially designed handles (found on the base) and this adds enough friction and tension to allow the tube to move easily when nudged or to stay solidly in position. SkyWatcher 300mm (12”) Classic Dobsonian Telescope Specifications table { width: 100%; border-collapse: collapse; } table, th, td { border: 1px solid black; } th, td { padding: 8px; text-align: left; } th { background-color: #f2f2f2; } .bold { font-weight: bold; } Specifications Detail Optical Design Newtonian Reflector (parabolic primary mirror) Aperture 305 mm (12 inches) Focal Length 1500 mm Focal Ratio f/4.9 Secondary Mirror Diameter 69 mm Resolution (Dawes) 0.38 arcseconds Resolution (Rayleigh) 0.45 arcseconds Limiting Stellar Magnitude 15.1 Highest Practical Power 610x (theoretical maximum) Lowest Practical Power 43x Finder Scope 8×50 Focuser 2” Crayford-style with 1.25” adapter Mirror Coatings 94% Reflectivity Aluminum Coating Primary Mirror Material Pyrex Tube Length 1400 mm (140 cm) Tube Outer Diameter 362 mm (36.2 cm) Tube Weight 21 kg Mount Type Dobsonian Base Diameter 635 mm (63.5 cm) Eyepiece Height at Zenith 1486 mm (148.6 cm) What’s in the Box SkyWatcher 300mm (12”) Classic Dobsonian Telescope Optical Tube Assembly Dobsonian Mount Base 8×50 Finder Scope 2” Crayford-style Focuser with 1.25” Adapter 1.25” 25mm Super Plössl Eyepiece (60x) 1.25” 10mm Super Plössl Eyepiece (150x) 2” to 1.25” Eyepiece Adapter with M42 Thread 2” Tube Extension Eyepiece Rack Collimation Tool User Manual