Cloud Break Optics

72° ED Series 40mm Waterproof Eyepiece

72° ED Series 40mm Waterproof Eyepiece - Main image
$269.99 $449.99 In stock

Category: Eyepieces

The Explore Scientific 72 degree ED 40mm eyepiece with a 2 inch barrel is designed to deliver the widest possible field of view in the series, making it ideal for sweeping the night sky and observing the largest celestial objects. With its 2 inch barrel and expansive 72 degree apparent field of view, this eyepiece provides a truly immersive perspective. It allows you to take in entire star fields and large deep sky objects in a single view.

The extra low dispersion glass ensures that image quality remains sharp and well corrected, with reduced color fringing and improved contrast. This results in a clean and natural viewing experience even at very low magnification. The comfortable eye relief supports long, relaxed observing sessions.

This eyepiece is the ultimate wide field option for those who want to experience the full scale of the night sky.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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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)

Joseph ★★★★★

The 40mm delivers incredibly wide, immersive views of the Milky Way that make my other eyepieces feel like peepholes. The eye relief is generous enough that I can actually keep my glasses on while sweeping, which is a huge plus.

Claire E. ★★★★★

The 72-degree apparent field makes sweeping the Milky Way feel effortless, and the 40mm focal length gives me that immersive, float-in-space sensation. It’s also surprisingly well-built for the weight, though I do wish the eye cup were a touch more adjustable for glasses wearers. Still, this is my n

Nicholas B. ★★★★★

Was a bit worried the 2-inch barrel would be heavy, but it balances perfectly on my dob. The 72-degree field makes scanning the Milky Way feel immersive, and the edge-to-edge clarity surprised me for such a wide view.