Tele Vue 21mm Ethos Eyepiece - 2" - ETH-21.0 Eyeguard Extender Linear Field of View (@1000

Linear Field of View (@1000 m): 56 m (184 ft)

Field Stop (mm): 30

The TeleVue Flat Top Adapter incorporates a non-marring soft brass clamp ring instead of a thumbscrew to keep your eyepiece barrels looking like new

You no longer have to constantly shift a Dobsonian to keep objects centered for sharp viewing

Tele Vue 21mm Ethos Eyepiece - 2" - ETH-21.0 Eyeguard Extender Linear Field of View (@1000About the TeleVue 21mm Ethos Eyepiece 2" Tele Vue is known for its in house telescope eyepiece and TeleVue Telescope designs by Al Nagler; and their latest TeleVue Telescope Eyepiece brings new meaning to the term "in house." The concept for this TeleVue Telescope Eyepiece series was proposed by Tele Vue President David Nagler, with performance parameters giving it the fundamental characteristics (the ethos) of a TeleVue Telescope Eyepiece: high