Astromania Telescope Eyepiece 1.25 inch HD Fully Multi Coated Telescope Accessory, 66 Degree Ultra Wide Angle Eyepiece for Astronomy Telescope, Long Eye Relief HD 20mm Wide Angle Telescope Eyepiece

66 Degree Ultra Wide Angle Eyepiece: Provide impressive optics with an enormously wide 66 degree apparent field of view (AFOV); Perfect for clearly observing planets or deep sky objects and offering expansive views of moon star clusters and Milky Way Comfortable Eye Relief & Adjustable Eyecup: Generous 18mm eye relief with 20mm focal length allows comfortable viewing distance during astronomical; fold-down rubber eyecup design more fit the glasses wearer that prevent stray light entering when using Universal 1.25 inch Compatibility: Equipped with 1.25-inch (31.75mm) compatible with all standard 1.25" focusers of telescope; diagonal mirror ; barlow lens and other telescope accessories; Included standard 1.25” filter thread connect to telescope filter Advanced 5-Element HD Optics: Precision-engineered with muti-coating optical system are characterized by highly effective coatings and high light transmission, which delivers sharper and clearer observed images with better color correction and contrast Professional & Precise Detailed Design: All metal alumnium construction for long time use; Equipped with two dust-cover for better protecting eyepiece; blackened lens edges eliminate light scattering and minimize internal reflection with maximize contrast