All Our Other Accessories -0.965" SR4mm Astronomical Eyepiece For Planet Moon Orion Celestial Highlights generic brand 0.965" SR4mm Astronomical Eyepiece For Planet Moon Orion Celestial Description: 0.965"/24.5mm Multi-coated SR4mm Telescope Eyepiece. Application : Support all types of telescopes, reflectors, refractors, for observing star clusters, the moon, the sky, planets and other celestial bodies.35 degree field of view: wide field of view with increased sharpness and a long eye relief.Fully coated: high quality optical glass for maximum brightness.Fits 0.965"/24.5mm telescope eyepiece filters. Specification: Material: Optical Glass + Metal Focal Length: 4mm/0.15inch Eyepiece Port: 24.5mm/0.965inch Package Include: 1x Telescope Eyepiece