• Extra-low dispersion glass; SV503 Telescope OTA is designed with ED glass; will give you the crystal clear image; SV503 80ED telescope produces an especially colour true and high contrast image; just right for more discerning observers
• Dual-speed rack and pinion focuser; the gear ratio of the dual speed 2-inch toothed focuser is 1: 10; which makes it easy to achieve accurate focus
• Top-quality material; the appearance of the SV503 OTA is baked with high-end fine-grained paint; with exquisite appearance and delicate feel; all machined by CNC
• All optical surfaces multi-coated; the whole optical lens adopts the technology of ultra-wideband multilayer coating; 80mm aperture; fully multi-coated ED optics deliver outstanding views; day or night
• Areas of application; 80mm F7 astronomy telescope SV503 would be better begin for astronomy amateurs to do astrophotography
• Package Includes；80ED F7 Telescope OTA*1；2" - 1.25" attachment ring*1；dovetail*1；objective cover lens*1
• Strong adaptability；SV503 80mm can be used with SV193 Focal Reducer, SV705C Telescope Camera, SV220 Telescope Filter, SV226 Telescope Filter Drawer for astronomical photography OR be used with SV188P Dielectric Mirror, SV182 Finderscope, SV135 Zoom Eyepiece for astronomical visual observation