The Orion SkyQuest XX16g GoTo Truss Tube Dobsonian Telescope features an f/4.4 focal ratio. Included accessories comprise a 2" dual-speed Crayford focuser, a 28mm eyepiece, and a 12.5mm eyepiece. The ...

This article was provided by Simulation Curriculum, the leader in space science curriculum solutions and the makers of the SkyFi III wireless telescope controller and the SkySafari app for Android and ...