Tele Vue 2" 21mm Ethos Telescope Eyepiece

As soon as you were starting to think TeleVue couldn't possibly make any enhancements to their eyepieces, they introduce the Ethos line with their spectacular 100-degree apparent field of view! Together with a good telescope, this 21mm Ethos eyepiece enables views that are as close as can be to the views astronauts must have seen when peering out the window of their spacecraft. As this eyepiece allows for such broad views, even the eyepiece itself disappears from sight, leaving nothing but a dark, starry skyscape and the object you want to view.

The apparent field of view of the 21 mm Ethos is 50% larger than the 82-degree Nagler!

All of the high-quality features you've come to expect from quality TeleVue eyepieces are here in the Ethos, including sharpness across the entire field, high contrast views, and superb control over aberrations such as astigmatism, field curvature, lateral color, angular magnification distortion, and low pupil sensitivity for daytime use. As with all Tele Vue eyepieces, you'll enjoy a threaded eyepiece barrel, rubberized no-slip grip, rubber eyecup to cushion the view, 100% quality control, and a limited lifetime warranty.

Tele Vue 21mm Ethos Eyepiece Specifications

Focal Length: 21mm
Apparent Field: 100º
Barrel Size: 2"
Field Stop: 36.2mm
Eye Relief: 15mm
Dioptrx Compatible: Yes
Weight: 36 oz.