Tele Vue 24mm DelosThe Delos eyepiece series was conceived as a narrower field, longer eye relief Ethos. Reducing the field to 72 allowed freedom to increase eye relief to 20 mm while controlling pupil aberrations, all without making the eyepiece too large. With Ethos performance standards as benchmarks, the Delos design achieves full field sharpness, virtually perfect (theta) distortion mapping, and color neutrality. Image contrast is maximized utilizing glass matched