Cloud Break Optics

72° ED Series 20mm Waterproof Eyepiece

72° ED Series 20mm Waterproof Eyepiece - Main image
$191.99 $299.99 In stock

Category: Eyepieces

The Explore Scientific 72 degree ED 20mm eyepiece with a 1.25 inch barrel is designed for bright, wide field observing, making it ideal for scanning the night sky and viewing large celestial objects in their entirety. With a 72 degree apparent field of view, this eyepiece delivers an expansive and immersive perspective that enhances the sense of scale when observing deep sky objects. It allows users to take in entire star clusters, nebulae, and rich star fields with ease.

The extra low dispersion glass improves image clarity by reducing chromatic aberration and enhancing contrast. This results in sharper, more natural views with better color accuracy. The comfortable eye relief supports relaxed, extended viewing sessions and makes the eyepiece accessible to a wide range of users.

This focal length is particularly effective as a low to mid power option, offering bright views and a wide field that makes it easier to navigate and enjoy the night sky.

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Ryan K. ★★★★★

Took this out last night for some wide field observing, and the 72-degree apparent field really does make scanning the Milky Way feel immersive and effortless. The 20mm focal length gives a nice balance between magnification and a bright view, even in my moderately light-polluted backyard.

James T. ★★★★★

The 72-degree field of view makes scanning the Milky Way feel almost immersive, and the edge-to-edge sharpness on my f/6 scope surprised me. Focus is crisp across the whole view, even on bright star clusters.

Lily ★★★★★

I was a little worried the 20mm focal length might not be wide enough, but the 72-degree field of view lets me take in huge star fields in a single glance without moving the telescope. The 1.25 inch barrel fit perfectly into my focuser, and the image stays sharp right to the edge of the view.