Tele Vue 21mm Ethos Eyepiece - 2" - ETH-21.0 Telegizmos Covers Parfocal eyepiece require little to

Parfocal eyepiece require little to no focusing when changing from low to high power

Other Equipment: Camera Shutter Cable

they still enjoy the same care and attention to detail as the most expensive

Maintains images in the true focal plane

Tele Vue 21mm Ethos Eyepiece - 2" - ETH-21.0 Telegizmos Covers Parfocal eyepiece require little toAbout 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