Dobsonian telescopes are popular with amateur telescope makers for their ease of design and construction, portability, and their use of large optical mirrors. pioneered by john dobson in the 1960s, the instrument combines a newtonian reflector telescope with a unique two-axis movable base.. Plans for building a dobsonian telescope brought to you by: the san francisco sidewalk astronomers yes, it "looks like a cannon," but the above is really a ten-inch (measured by the diameter of the objective) newtonian telescope that almost anybody can build.. Get the practical and amazingly affordable orion build-a-scope 12" intelliscope truss dobsonian telescope and hit the road to astronomical adventure. with the build-a-scope 12" intelliscope truss tube dobsonian from orion, you decide which finder scope, eyepiece, and other accessories come with the telescope..
