Orion 8885 5mm Edge On Planetary Eyepiece High-magnification 5mm focal length 1.25" eyepiece designed for exceptional planetary and lunar viewing through any telescope Flat field eyepiece design ensures sharp focus out to the edge of its wide 55-degree apparent field of view Barrel distortion and field curvature commonly seen in standard eyepiece designs are not seen in Orion Edge-On eyepieces Features a long 20mm eye relief for comfortable with or without eyeglasses Amazingly affordable Orion Edge-On telescope eyepieces wont leave you financially on edge!