Orion 8883 6.0mm Edge-On Planetary Eyepiece High-quality 6mm 1.25" telescope eyepiece designed for exceptional planetary and lunar viewing Edge-On eyepiece's flat field design ensures sharp focus all the way out to the edge of their wide 55-degree apparent field of view You won't see any barrel distortion or field curvature as commonly seen in standard eyepiece designs Long 20mm eye relief for comfortable viewing even with eyeglasses on Amazingly affordable Edge-On eyepieces from Orion wont have you on edge financially!