• Explore Scientific 92° ED 20mm Waterproof Eyepiece — Immersive Wide-Field Deep-Sky Eyepiece
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Explore Scientific

Explore Scientific 92° ED 20mm Waterproof Eyepiece — Immersive Wide-Field Deep-Sky Eyepiece

Explore Scientific 92° ED 20mm Waterproof Eyepiece — Immersive Wide-Field Deep-Sky Eyepiece

$449.99
$449.99
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The Explore Scientific 92° ED 20mm is a premium ultra-wide telescope eyepiece that delivers rich, immersive wide-field views with a spectacular 92° apparent field of view. An eyepiece sets your magnification — this 20mm keeps power modest so faint deep-sky objects stay bright — while the enormous 92° field frames large nebulae, clusters and star fields in a panoramic, wraparound view.

Extra-low-dispersion (ED) glass keeps colours tightly focused for sharp, high-contrast detail, and this 2" eyepiece is fully multi-coated and argon-purged so it won't fog internally in cold or damp conditions.

Who it's for: Deep-sky observers who want bright, panoramic wide-field views with maximum immersion. Not sure which focal length to pick? Read our guide to choosing the proper telescope eyepiece.

  • 92° apparent field: an ultra-wide, immersive "spacewalk" view.
  • ED glass optics: extra-low-dispersion elements for sharp, colour-corrected detail.
  • Wide-field 20mm: low-to-mid power that keeps faint objects bright and beautifully framed.
  • 2" barrel, fully multi-coated: premium build with high light transmission.
  • Argon-purged & sealed: resists fogging and moisture for all-weather use, with long eye relief.
Specifications
Series 92° ED Waterproof
Focal length 20mm
Apparent field of view 92°
Glass Extra-low-dispersion (ED), fully multi-coated
Sealing Waterproof, argon-purged
Barrel size 2"

What magnification will I get?
Divide your telescope's focal length by 20. For example, a 1200mm scope gives about 60x with this eyepiece.

What does a 92° apparent field look like?
It's an ultra-wide, wraparound view that makes large deep-sky objects and star fields feel genuinely immersive.

Is 20mm good for deep-sky?
Yes — its modest power keeps faint objects bright while the huge field frames big nebulae and clusters superbly.

Does it fit my telescope?
It requires a 2" focuser or diagonal.

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Frequently Asked Questions

With a beginner telescope you can see a surprising amount — the craters and mountains on the Moon, the rings of Saturn, the moons of Jupiter, and star clusters like the Pleiades. As you get more comfortable, you can also spot nebulae and distant galaxies. Not sure which beginner telescope is right for you? Check out our Telescope Buying Guide.
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All telescopes on Telescope Wolves are hand-picked with beginners in mind. If you're unsure which telescope is right for you, check out our Telescope Buying Guide.
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