SVBONY SV154 2″ 26mm 70° Super Wide Angle Eyepiece

Product Overview

The SVBONY SV154 26 mm is a 2″ super wide angle eyepiece with a 70° apparent field of view and a 32.3 mm field stop. Its 5 elements in 3 groups are fully multi-coated, with blackened lens edges and anti-reflection threads. Eye relief is 20 mm, the eyecup folds down, the barrel has a safety recess and is threaded for 2″ filters (M48 x 0.75). It weighs 305 g.

Who It's For

This is a good match if your telescope has a 2″ focuser or diagonal and you want a low-power, wide-field eyepiece for sweeping star fields, finding objects and framing large nebulae and clusters, including if you observe with glasses.

Key Features & Design

• 70° apparent field, 32.3 mm field stop: a wide true field at low power.
• 20 mm eye relief: comfortable viewing, with a fold-down rubber eyecup for eyeglass wearers.
• 5 elements / 3 groups, fully multi-coated: high-index glass for sharp, high-contrast views.
• Blackened edges and anti-reflection threads: maximise contrast.
• Safety recess: reduces the chance of the eyepiece slipping out of the focuser.

Optical Design

A 26 mm focal length with a 32.3 mm field stop takes advantage of the 2″ barrel: the field stop is larger than a 1.25″ barrel can accept, which is what gives the wider true field. Magnification is your telescope's focal length divided by 26; on a 1000 mm telescope that is about 38x. The fully multi-coated 5-element, 3-group layout keeps faint fields bright.

Recommended Uses

• Low-power deep-sky observing of large nebulae, clusters and Milky Way star fields.
• Finding eyepiece for locating targets before switching to higher power.
• Whole-disc lunar views on longer focal length telescopes.

Compatibility and Accessory Notes

• Barrel: 2″, for 2″ focusers and diagonals.
• Filter thread: M48 x 0.75 for standard 2″ filters.

Good to Know Before You Order

• 2″ focuser or diagonal needed: it does not fit a 1.25″-only focuser. If you are not sure which your telescope has, send us the model and we will check.
• Weight: 305 g, worth allowing for in balance on lighter mounts.

Frequently Asked Questions

Is it difficult to set up?

No. It slides into a 2″ focuser or diagonal and is held by the set screw or compression ring.

Can I wear glasses with it?

Yes. The 20 mm eye relief and fold-down eyecup are designed with eyeglass wearers in mind.

What magnification will I get?

Divide your telescope's focal length by 26. A 750 mm telescope gives about 29x.

Bottom Line

In short: a 2″, 26 mm, 70° eyepiece with 20 mm eye relief that gives wide, low-power views in any 2″ focuser.