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 reflecting telescope reflector optical telescope telescope Newtonian reflector secondary mirror Previous snippet Full quote A flat secondary mirror reflects the light to a focal plane at the side of the top of the telescope tube. URL https://en.wikipedia.org/wiki/Reflecting_telescope Next snippet Related snippets A curved primary mirror is the reflector telescope's basic optical element that creates an image at the focal plane [OF THE PRIMARY IF THERE IS NO SECONDARY]. The distance from the mirror to the focal plane is called the focal length. The Gregorian telescope ... employs a concave secondary mirror that reflects the image back through a hole in the primary mirror. This produces an upright image The Newtonian telescope ... usually has a paraboloid primary mirror but at focal ratios of f/8 or longer a spherical primary mirror can be sufficient for high visual resolution. Related snippets (backlinks) A telescope is an optical instrument using lenses, curved mirrors [DISPUTED], or a combination of both to observe distant objects ... Visit also Visit also (backlinks) Flags
