Orion 8920 6mm Expanse Telescope Eyepiece This 6mm telescope eyepiece offers a wide field of view and superior optical performance at a bargain price Nice 14.8mm eye relief lets eyeglass wearers view the entire field without removing their glasses Wide 66 degrees apparent field of view lets you see more of the sky Delivers sharp images with good color correction and contrast Aluminum barrel is internally blackened to eliminate internal light scattering, and is threaded to accept 1.25" Orion eyepiece filters