Tele Vue Ethos 6mm, 10 mm and 17 mm Eyepieces

"New Arrivals: Ethos 6mm & 17mm!"


It’s been quite a challenge to develop new Ethos eyepieces to the same performance standards achieved by the 13mm and 8mm models, perhaps the most honored in history. The increased field of the 17mm and increased power of the 6mm will open up new visual experiences that Galileo could hardly have imagined, from small refractors to the largest Dobsonians.



17mm Ethos Specifications
  • Apparent field: 100°
  • Focal length: 17mm
  • Effective field stop: 29.6mm
  • Eye relief: 15mm (accepts DIOPTRX eyesight astigmatism correctors)
  • Barrel size 2”
  • Weight: 1.55 lbs (24.8 oz.)
6mm Ethos Specifications
  • Apparent field: 100°
  • Focal length: 6mm
  • Effective field stop: 10.4mm
  • Eye relief: 15mm (accepts DIOPTRX eyesight astigmatism correctors)
  • Barrel size: 2”/1¼”
  • Weight: .97 lb/15.5 oz.
Ethos 17 mm £539.00 Ethos 6 mm £429.00

"Ethos 10mm: Filling the Gap!"

The 10mm 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. And, "filling the hole" between the 13mm and 8mm makes it the ideal centerpiece for a 17mm/10mm/6mm Ethos set.

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.

In addition to matching all the key performance criteria of its 13mm sibling, its lighter weight and smaller diameter makes the 10mm more suitable for use with a binocular viewer.

Tele Vue 10mm Ethos Specifications

Get your own 10mm Tele Vue Ethos Eyepiece from Venturescope for £449.00!


Reviewers Ratings of the Ethos Eyepiece

BBC Sky at Night Magazine
Build Quality 98%
Ease of Use 95%
Field of View 100%
Optical Quality 98%
Value for Money 90%
Overall 96%
Sky & Telescope
Optical Performance * * * * *
Sensibly perfect. No meaningful improvements possible.