Reflector telescope aperture 406 mm focal length 1 800 mm focal ratio 144 optical systems reflector newton suitable for beginners enthusiasts max useful magnification 812 x tracking dobson mount dobson rockerbox goto tripod steel tripod features gps goto minimum useful magnification 56 finderscope 9x50 eye piece 2 crayford 110 eyepiece type super plssl goto software synscan number of pre programmed celestial objects 42 900 power suppl