GSO PREMIUM 9mm PLOSSL Eyepiece 1.25" 4-element design is renowned for its outstanding performance. Superior Multi-Coated (FMC) With 52 Degree Field Of View allowing increase clarity, sharpness and clean impressively high contrast images, utilisation of top quality glass. They're ideal for all types of telescopes: reflector, refractor, and catadioptric such as Maksutov-Cassegrains and Schmidt-Cassegrains.
Each barrel is internally threaded to accept 1.25" filters. The built-in soft rubber eyeguards enhance viewing by helping to block out ambient light and properly position the eye.