Eyepiece for Telescope, 1.25in 4mm HD Fully Coated Astronomy Filters, Aluminum Alloy Optical Glass Telescope Lens for Moon, Planet, Nebula Observation - Yoidesu, Yoidesuypn2gikxt5

• Size: Standard 1.25 inch/31.7mm universal Telescopes Eyepiece for astronomical telescopes. 1.25 inch 4mm eyepiece gives the widest viewing field along with extra sharpness. Telescope Eyepiece: 4mm focal length eyepiece for wide field of view and superior performance. Foldable eyecup allows for comfortable viewing, even with glasses. Fully Coated: Offers bright and sharp images with excellent color correction for planetary viewing and daytime observation. Fully coating group on each lens surface maximize light transmission, contrast and gets clear images Features: All metal construction with a threaded bottom for 1.25in filters, compatible with standard 1.25 inch interface telescopes or filters. Widely Used: Suitable for all astronomical telescopes with a 31.7mm interface. Perfect for broad field lunar observations, medium sized star clusters, and a wide range of cloudy nebulas and deep sky targets.