Tele Vue Ethos 21mm 100° Eyepiece (2")

Tele Vue Ethos 21mm 100° Eyepiece (2")

Due to high demand and global product shortages due to the pandemic, please call for availability.

Tele Vue eyepieces are best-in-class, and truly exquisite. The attention to every detail, from producing the highest-quality optics to the fit and finish, and you'll know why you must have at least one in your collection. We bet you can't own just one.

One of the most expensive features of good optics is contrast, and the more, the better. The Tele Vue Ethos is high in contrast, thanks to extra-low reflection high-efficiency coatings tuned to the composition of each element, and flat-finished baffles.

The 21mm Ethos offers 31% more field of view compared to standard 40mm 40° AF 1.25" eyepieces, so if your scope accepts 2" eyepieces, you're in luck for a nice field of view boost with more contrast because the skies appear darker.

The Ethos pushes the apparent field of view wide-open; it is incredibly wide at 100°... Stars render as pin-points across the full field. When observing planets like Jupiter, the view is as if you're parked in orbit.

The Ethos design is essentially multiple eyepiece designs blended into one.


  • Focal length: 21mm
  • Eye relief: 15mm (.6")
  • Barrel diameter: 2"
  • Fully multicoated optics
  • # of elements: unpublished
  • 100° apparent field of view
  • 2" barrel threaded for standard filters
  • Roll-over rubber eyecup
  • Dioptrx compatible
  • Length: 14.2cm (5.6") (aprox)
  • Lens Housing Diameter: 7.5cm (2.95")
  • Weight: 1027g (36oz)
  • Tele Vue Lifetime Limited Warranty

Browse our website for other eyepieces in this series.