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
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
Focal reducer and field flattener is one of the essential accessories for astrophotography; SV193 2 inch 0.8x focal reducer and field flattener for refractor telescopes
With advanced refractor; SV193 0.8x focal reducer can take dazzling celestial photos without worrying about the distortion of the star points on the edge of the photo
The front end is a standard 2-inch socket to connect to the main lens; and the back end is M48x0.75 threaded to connect to the camera bayonet; support Full Frame Camera