We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Tele Vue 8mm Ethos-SX eyepiece with 2 inch and 1.25 inch barrels

Tele Vue

Tele Vue Ethos-SX 8mm 100° Eyepiece 2" / 1.25

SKU CH-HDFN-PE9E1

An 8 mm eyepiece with a 100° apparent field, 15 mm eye relief and parfocal compatibility with 1.25″ focusers

  • 100° apparent field of view creates immersive floating-in-space sensation
  • 15 mm eye relief allows comfortable extended viewing with eyeglasses
  • 8 mm focal length delivers high magnification for detailed planetary observation
  • Parfocal with Radians, Plossls, Type 6 Naglers and 1.25" Panoptics simplifies eyepiece swaps
  • 83 % of 24 mm zoom field at 8 mm power boosts contrast on deep-sky objects

Telescope eyepiece for high-power deep-sky

The Tele Vue Ethos-SX 8 mm eyepiece delivers a 100° apparent field of view at a short focal length, giving high magnification with a darker sky background that reveals faint stars and fine detail on deep-sky objects. It suits visual observers who want immersive wide-field views at planetary-scale power.

Parfocal with 1.25" focusers and select eyepiece

The eyepiece is parfocal with Radians, Plössls, Type 6 Naglers and 1.25" Panoptics in 1.25" focusers, so focus shifts are minimal when swapping between them. It also fits 2" focusers and works with the Tele Vue 60½ 1.25" diagonal, but it does not replace a zoom for variable magnification needs.

15 mm eye relief and dual-barrel design

Generous 15 mm eye relief allows comfortable extended viewing, even for eyeglass wearers. The combined 2" and 1.25" barrel makes it adaptable to binocular viewers and spotting-scope setups, while the lighter weight and smaller diameter reduce strain on focusers and diagonos during long sessions.

Highlights

  • 100° apparent field of view creates immersive floating-in-space sensation
  • 15 mm eye relief allows comfortable extended viewing with eyeglasses
  • 8 mm focal length delivers high magnification for detailed planetary observation
  • Parfocal with Radians, Plossls, Type 6 Naglers and 1.25" Panoptics simplifies eyepiece swaps
  • 83 % of 24 mm zoom field at 8 mm power boosts contrast on deep-sky objects

Specifications

No published specifications for this item yet.

Questions about this item

Should I choose the 2" or 1.25" barrel version of the 8mm Ethos-SX?

The eyepiece accepts both 2" and 1.25" focusers; the 1.25" barrel is parfocal with Radians, Plossls, Type 6 Naglers and 1.25" Panoptics, while the 2" barrel suits larger diagonals and binocular viewers.

What does the 100° apparent field of view deliver at the telescope?

A 100° apparent field gives an expansive, immersive view that makes high-power observing feel like floating in space, and the darker sky background at 8mm focal length reveals fainter stars and more detail on deep-sky objects.

How does the 1.25" barrel interface affect compatibility with my focuser?

In 1.25" focusers the eyepiece is parfocal with Radians, Plossls, Type 6 Naglers and 1.25" Panoptics, so you can swap between them without refocusing.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.