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TeleVue 8mm ETHOS Eyepiece

5.0 out of 5 stars
1 customer reviews


In addition to matching all the key performance criteria of its 13mm sibling, the new 8mm version is parfocal in 1.25" focusers with Radians, Plössls, Type 6 Naglers and 1.25" Panoptics. Further, its lighter weight and smaller diameter than the 13mm Ethos makes the 8mm suitable for anyone using a binocular viewer.

An important benefit of the combination of large apparent field of view and shorter focal length is that for a given field in the sky, higher magnification results in a darker sky background. Fainter stars become visible and more detail is seen on all deep sky objects. Ethos provides another big magnification/contrast jump, yielding dramatic views simply not previously possible in any telescope. With the smaller exit pupil, eyesight limitations are also reduced.

Our 8mm Ethos delivers: 100° apparent field (50% larger in area than 82° Naglers), comfortable eye-relief, accepts DIOPTRX eyesight astigmatism correctors, distortion correction, high contrast and on-axis sharpness for planetary viewing. It is the "do-it-all" eyepiece perfect for all scopes that can utilize this focal length.

In comparing it to our 8–24mm Zoom eyepiece, the 8mm Ethos has the power of the 8mm Zoom and 83% of the field of the 24mm setting!

Model # ETH-08.0
Focal Length (mm) 8
Barrel Size (in.) 2" & 1¼"
Apparent Field of View (deg.) 100
Eye Relief (mm) 15
Weight (lb / oz) 0.95 / 15.2
Field Stop (mm) 13.9

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1 of 1 people found the following review helpful

Tele Vue 8mm ETHOS Eyepiece

By Ronald Stanger on October, 17th 2009

At first I was skeptical to lay out my hard earned money for this eyepiece. But I read an artical in SKY AND TELESCOPE that you only realy need two eyepieces. I happen to own all Naglers type6s,a 26mm and a 31mm. Let me tell you,the 8MM ETHOS is worth every hard earned penny. The images are crisp and sharp with a great deal of contrast. If your thinking about buying this lens, stop thinking and buy it. You will be very pleased you did. The BEST two eyepieces to have would be Tele Vues 26mm & 8mm ETHOS with Tele Vues Parracor...did I spell that right!!!!! Happy Viewing.

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