Tele Vue 3.5mm Delos Eyepiece - 1.25"

The 3.5 mm Delos Eyepieces Tele Vue:   "It was natural to take lessons learned from the tremendously successful Ethos project and apply it going forward. In the fall of 2008, Paul Dellechiaie was tasked to investigate a long eye-relief eyepiece design in the 70-degree AFOV range, retaining the key performance goals met with Ethos. My father named Paul's design, "Delos." Delos is a beautiful Greek island which happens to be the mythical birthplace of Apollo, god of light. More importantly the name was chosen to give recognition to Paul, principal designer of both Delos and Ethos."  - David Nagler Tele Vue is pleased to introduce the Delos, mid-to-short focal length line of 20 mm eye-relief, 72-degree apparent field of view eyepieces. Every optical, mechanical, and ergonomic aspect was rethought to achieve reference-standard performance for any visual application. The Delos was conceived as a narrower field Ethos. Reducing the field to 72-degree allowed freedom to increase eye-relief, wh