Diagonal Telescope

Manufacturer # ATSC-710 diagonal screen size 7 inches HD compatible yes high-definition video signal compatibility 480i model name ATSC-710 TV type flat panel LCD viewable image size 7 inches viewing angle 70 horizontal; 65 vertical degrees native resolution 480 x 234 maximum resolution 1440 x 234 TV brightness 200 cd/m2 contrast ratio 300:1 aspect ratio [...]

Apochromatic refractors due to their unobstructed, text-book like diffraction patterns produce the sharpest, highest quality optical imaging available bar-none, aperture for aperture, of any telescope optical system. These breathtakingly pristine celestial views are coveted by experienced amateur astronomers. While the cost is expensive compared to a Newtonian reflector of similar aperture, during those cherished moments [...]