At a Glance
6mm
Focal Length
100°
Apparent FOV
15mm
Eye Relief
1.25"
Barrel Size
Score Breakdown
Overview
The Tele Vue Ethos 6mm is a premium, high-magnification eyepiece built for observers who want both power and an immersive wide field at the same time. The 6mm focal length delivers strong magnification depending on your telescope's focal length, making it well suited for planetary detail, lunar features, and tighter deep-sky objects like globular clusters. What makes the Ethos line unusual is that it pairs that high magnification with a 100-degree apparent field of view, which is genuinely rare at this focal length and produces a striking sense of being in space rather than looking through a tube.
The 15mm of eye relief is practical, keeping the experience comfortable during long sessions and workable for eyeglass wearers. The dual 1.25 inch and 2 inch barrel gives it broad telescope compatibility. Fully multi-coated optics control glare and preserve contrast well, which matters most at high magnification where even small optical flaws become obvious.
At $763, this is a serious investment. It rewards observers with capable, well-collimated telescopes of at least moderate aperture. If your equipment can support it, the Ethos 6mm is among the best high-power eyepieces available.
Key Features
- 100-degree apparent field of view delivers an unusually immersive experience at high magnification
- 6mm focal length is ideal for planets, the Moon, and resolved globular clusters
- 15mm eye relief keeps viewing comfortable during extended sessions
- Fully multi-coated lenses maintain strong contrast and minimize scatter across the full field
- Dual 1.25 inch and 2 inch barrel fits a wide range of telescopes without adapters
- Image quality is most rewarding when paired with a well-collimated, larger-aperture telescope
Specifications
| Focal Length | 6mm |
| Apparent FOV | 100° |
| Eye Relief | 15mm |
| Barrel Size | 1.25" |
| Design | Modified Nagler |
| Elements/Groups | 9/6 |
| Series | Ethos |
| Coating | Fully Multi-Coated |
| Waterproof | No |
Popular Telescopes for This Eyepiece
ZWO Seestar S50
42x / 1.2mm exit pupil / Apochromat Refractor
Sky-Watcher FlexTube 300 SynScan
250x / 1.2mm exit pupil / Dobsonian
Sky-Watcher FlexTube 300P
250x / 1.2mm exit pupil / Dobsonian
Celestron NexStar 130SLT
108x / 1.2mm exit pupil / Newtonian
Amazon Reviews
This is a superb eyepiece! Optically close to perfect, this eyepiece shares much in common with it's 8mm sibling. This line of eyepieces allows you to similarly frame a DSO like a cluster or a galaxy at 2X the magnification that you'd get using a Plossl i.e. to frame a DSO the same way with a Plossl...
This arrived same day as my ZWO 80mm Apochromatic Quadruplet Refractor. Tested them together. First night out, was watching Saturnrise. 6mm eyepiece, 600mm focal length. A perfect 100x magnification setup. I seen Saturn many times, for the first time I saw Titan, the largest moon...... Just WOW!!!
First of all, my telescope is meade light bridge 16". Its bundle lens is 24 mm which provide very clear and sharp image. As I want to see bigger images with same clear, sharp and bright like 24 mm lens' images , I bought one. As a result, I can see bigger images with less clear, sharp and bright not...
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