Icon class icon_class fas fa-quote-left icon_class_computed fas fa-quote-left Related content The Newtonian telescope has flat secondary mirror and a paraboloid or spherical primary mirror Source Wikipedia Copyright information Text from Wikipedia and Wiktionary web pages quoted for educational purposes is subject to the Wikipedia Creative Commons Attribution ShareAlike Licence Snippet kind INFO Keywords Dobsonian reflector telescope telescope tube truss tube Newtonian reflector reflecting telescope Previous snippet Full quote Collapsible "truss tube" Dobsonians appeared in the amateur telescope making community as early as 1982 and allow the optical tube assembly, the largest component, to be broken down. URL https://en.wikipedia.org/wiki/Dobsonian_telescope#The_truss_tube Next snippet Related snippets Related snippets (backlinks) As the name implies, the "tube" of this design is actually composed of an upper 'cage assembly', which contains the secondary mirror, and focuser, held in place by several rigid poles over a ‘mirror box’ which contains the objective mirror. Visit also Visit also (backlinks) Flags
