D114F900 Newtonian Reflective Astronomical Telescope 114900

Field of View : X Eyepiece diameter : X Water Resistance Level : IPX4 Objective Lens Diameter : X Magnification : X Model Number : Primary Mirror Objective Lens Group Type : Monocular Brand Name : Arcturus Origin : Mainland China Material : high quality optical glass Primary mirror diameter : 114mm Primary mirror focal length : 900mm Primary mirror edge thickness : 14mm Surface : Aluminized and protective film Type : Newton Reflector Spherical Primary Mirror suit for : reflection telescope Back : scrub / plane, randomly sent Secondary mirror minor axis : 23mm Features: Since the cost of the mirror is much lower than that of the lens, it is often a reflective, rather bulky, for large-diameter telescopes. Portable design of the telescope, although the tube is only 500mm, but the focal length can reach 1000mm. Newtonian mirrors have a coke ratio of up to f / 4 to f / 8, making them ideal for observing those weak alien galaxies and nebulae. Sometimes it is well suited to observe the moon and planets with this telescope. If you want to take pictures, use the Newton telescope is very good. But the use of anti-telescope than to break a little trouble. Newtonian structure can be a good convergence of light, in the focus to get a very bright like. Package List: 1set*Primary Mirror Objective Lens Group 114900 reflector lens group, spherical primary mirror, aperture 114mm, focal length 900mm, the edge thickness of about 14mm, aluminum and protective film, is a great choice for DIY telescope enthusiasts. 114900Primary mirrorand secondary mirror 3d printing main lens holder, sub lens holder, sub lens holder 3d printing process, PLA material, one-piece auxili