premium materials the body is constructed of high quality materials, telescope 90 degree diagonal, sturdy and not easy to damage.
mirror for refractor and catadioptric telescopes, skywatcher lenses, and not for reflector telescope., etx 90 ec lenses
scope of application: standard 1.25 diameter fits 1.25 eyepieces and telescope focusers, for refractor and catadioptric telescopes, not for reflector telescopes
diagonal 90 deg dielectric mirror diagonal, 90 degree angle wide 90 degree angle allows you to view correct image from refractor telescope stand and just look down withcomfortable angle.
70 erect image 90degree, mirror for refractor and catadioptric telescopes, and not for reflector telescope.