Tele Vue 31mm Nagler Type 5 Eyepiece - 2" - EN5-31.0 type-binoculars-and-monoculars Nature & Wildlife

Nature & Wildlife

Exit Pupil (mm): 4 mm (0

Design: Porro Prism

This 4-element system provides the magnifying function of a Barlow without its limitations by restoring the field rays back to their original direction

we achieved constant focus (parfocality)

Tele Vue 31mm Nagler Type 5 Eyepiece - 2" - EN5-31.0 type-binoculars-and-monoculars Nature & WildlifeAbout the TeleVue 31mm Nagler Type 5 Eyepiece 2" With the TeleVue 31mm Nagler Type 5 Eyepiece, the unique 6 element design using four exotic glasses, maintains the contrast advancement while achieving a true field area 82% larger than the 22mm Type 4 TeleVue Telescope Eyepiece! Owners of fast Dobsonian Newtonian telescopes can enjoy a larger true field, free of secondary shadowing, than ever before. Compare a penny to a half dollar to see the relative