Orion 8940 35mm DeepView Eyepiece This 35mm focal length 2" telescope eyepiece offers bright, sharp and pleasing images of deep-space objects 3-element eyepiece lens design with multi-coatings for efficient light transmission Eyepiece eye relief is a long 20mm, ensuring comfortable views for eyeglass wearers and all astronomers Delightfully free of pincushion distortion and chromatic aberration Threaded for use with 2" Orion eyepiece filters