35mm Orion Ultrascopic Telescope Eyepiece This premium 35mm telescope eyepiece is optimized for viewing the widest field possible in a 1.25" barrel Fully multi-coated optics ensure maximum light transmission for bright views of the Moon, and nice, wide views of the planets and moons around them Superior optical coating dramatically improves both brightness and contrast, increasing visibility Includes a detachable winged rubber eyeguard to block out stray light and help position your eye Threaded for use with 1.25" eyepiece filters