Sky Watcher 12in .Flextube 300P SynScan GoTo Collapsible Dobsonian Telescope. Flextube 300P SynScan GoTo Collapsible Dobsonian Telescope S11820 features a flexible truss-tube design which makes the Sky-Watcher 12in Flextube SynScan telescope portable and easy to set up. The simple Tension Control Handle on this Dobsonian Telescope from the experts at Sky-Watcher telescopes allows you to increase or decrease friction between the optical tube and the sideboards thereby increasing or decreasing the friction between the optical tube and the sideboards. With its patented collapsing and reassemble just think about all the portable benefits that having a Flextube Dobsonian telescope brings to your door. But having a telescope with all the features of a SynScan and a telescope with the portability of a Sky-Watcher makes it a terrific choice for all kinds of astronomy including Planets Nebulae Star Clusters Mutliple galaxies Messier objects and more as well as all the beauty and mystery of the night sky not to mention a good daytime scope. In sum Sky-Watcher 12in .Flextube 300P SynScan GoTo Telescope S11820 gives you a superb optic coupled with simplified intuitive navigation making it one of the best values currently on the market. Specifications for Sky Watcher 12in .Flextube 300P SynScan GoTo Collapsible Dobsonian Telescope: Optical Design: Newtonian Reflector Aperture (mm): 305 mm (12 in) Focal Length: 1500 mm Focal Ratio: f/4.9 Focal Length of Eyepiece 1 (mm): 25 mm Focal Length of Eyepiece 2 (mm): 10 mm Highest Useful Magnification: 600x Limiting Stellar Magnitude: 14.3 Features of Sky Watcher 12in .Flextube 300P SynScan GoTo Collapsible Dobsonian Telescope: 12" (305 mm) Dobsonian-style Newtonian 1500 mm focal length (f/4.9) 2" single-speed Crayford-style focuser with 1.25" adaptor 4-element Plossl 25mm and 10mm 1.25" eyepieces 8x50 RA erect-image finderscope SynScan hand controller with 42000 object database GoTo Dobsonian base Package Contents: Sky Watcher 12in .Flextube 300P SynScan GoTo Collapsible Dobsonian Telescope Sky Watcher 12in .Flextube 300P SynScan GoTo Collapsible Dobsonian Telescope S11820