Description: 2 inch 40mm eyepiece, 72 degree apparent field of view,it is fit for large aperture telescope, it has good performance effective range. Fully multi-coated lenses, 5 lens elements, blackened lens edges 28mm eye relief, fold-down rubber eyeguard. Threaded for standard 2" astronomy filters. Application: Support all types of telescopes, reflector, refractor, to observe the star clusters, moon, sky, planets and other celestial bodies. Specification: Focal Length: 40 mm Lens Elements:5 Lens Group :3 Optical Coating: Full Multi Coating Field of View :72 Degree Bucket Size :2 inch (50.8mm) Eye Relief: 28mm Screening of Theme: Standard 2 inch Filter Thread (M48 × 0.75) Height (with Eyecups Extension: 140mm Package Includes: 1 Piece 2 inch 40mm 72 Degree Eyepiece
