D114F450 parabolic reflector lens devised for DIY astronomical telescope enthusiasts, providing exceptional clarity and precision. Features a 114mm diameter primary mirror with a 450mm focal length and a focal ratio of 3.95, ensuring superior light gathering capabilities. Includes a 35mm secondary mirror, perfect for enhancing your telescope's performance and image . Coated with aluminum film and protective layer, this mirror is built for durability and optimal reflection, making it ideal for both beginners and experienced astronomers. Easy to maintain: follow simple cleaning instructions to keep your mirrors in pristine condition for the best viewing experience.