17mm Ethos Eyepiece (100 deg.)

 No compromise: the Ethos eyepieces from TeleVue exceeds the previous Nagler series not only in terms of field size, but also image quality. Our tests also confirmed that the eyepieces provide higher contrast and higher light transmission, better eye relief and much better observing experience.

The only drawback is the high price. But one needs to buy such an eyepiece only once in a lifetime, they'll perform perfectly even after decades.

The 3.7mm and 4.7mm model provides 110° field of view.

The ones between 3.7mm and 13mm can be fit to both 1.25" and 2" focusers, while focal lengths longer than 13mm require 2" focuser.