1 Size: Standard 1.25 inch/31.7mm universal eyepiece for astronomical telescopes. 1.25 inch 4mm eyepiece gives the widest viewing field along with extra sharpness. 2 Telescope Eyepiece: 4mm focal length eyepiece for wide field of view and superior performance. Foldable eyecup allows for comfortable viewing, even with glasses. 3 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 4 Features: All metal construction with a threaded bottom for 1.25in filters, compatible with standard 1.25 inch interface telescopes or filters. 5 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.Item Type: Telescope Eyepiece
Material: Aluminum Alloy, Optical Glass
Weight: Approx. 57g / 2oz
Focal Length: 4mm / 0.2in
What's in the box
1 x Telescope Eyepiece
1 x Storage Box
