Explore Scientific 68° Series 1.25" 20mm Waterproof Eyepiece

See More of the Universe

Want immersive, wide-field celestial views? The Explore Scientific 68° Eyepiece delivers sharp, vivid images without distortion or glare.

Features

• Wide 68° Field of View: Enjoy expansive, immersive views of celestial objects, perfect for observing star clusters, nebulae, and more.
• 20mm Focal Length: Ideal for detailed and deep-space observations, offering clarity even at high magnifications.
• Fully Multi-Coated Optics: Enhanced multi-layer deposition (EMD) coatings maximize light transmission and reduce reflections, giving you crystal-clear images with high contrast.
• Argon-Purged, Waterproof & Fog-Proof: Protected against the elements, ensuring reliable performance in any weather condition, from humid nights to sudden temperature changes.
• Slip-Resistant Textured Surface: Designed for ease of handling during observations, even in wet or cold environments.
• Fold-Down Silicone Eyecup: Offers comfort during long sessions, especially for eyeglass wearers, with removable and adjustable eyecup settings.
• Parfocal Design: Switch eyepieces seamlessly without losing focus, minimizing adjustments and keeping your eyes on the stars.
• Rugged Durability: Built for outdoor use, with a sturdy, weather-resistant design that stands the test of time.
• 1.25" Barrel Size: Compatible with most standard telescopes, making it an easy addition to any astronomer's toolkit.

The Explore Scientific 68° Series 1.25" 20mm Waterproof Eyepiece is for you if...

• You want immersive stargazing experiences with a wide field of view that captures more of the night sky in stunning detail.
• You need a durable, weatherproof eyepiece that stands up to tough outdoor conditions, including fog, rain, and temperature fluctuations.
• You’re tired of frequent focus adjustments when switching between eyepieces and want a seamless, parfocal solution.
• You wear glasses and seek comfort during long observation sessions—this eyepiece provides long eye relief and an adjustable silicone eyecup.
• You demand high-quality optics that minimize glare and deliver sharp, high-contrast views, whether you’re exploring planets, galaxies, or faint deep-sky objects.
• You’re serious about maintaining your equipment—this eyepiece is designed for easy cleaning and protection against dust, moisture, and other contaminants.
• You value premium craftsmanship and performance from a brand known for excellence in astronomical optics, offering long-term reliability and breathtaking celestial views.

When you're under the night sky, every detail matters, and the Explore Scientific 68° Series 1.25" 20mm Waterproof Eyepiece ensures you won’t miss a thing. Its impressive 68° field of view lets you immerse yourself in the vastness of space, capturing wide, detailed images of celestial objects. Whether it’s the sweeping expanse of the Andromeda Galaxy or the intricate filaments of the Orion Nebula, this eyepiece delivers a viewing experience that standard eyepieces simply can’t match.

Built with fully multi-coated optics, the eyepiece enhances light transmission to deliver bright, high-contrast images. You’ll notice the difference as you pick up on faint details that were previously hard to spot—such as delicate star clusters or diffuse nebulae. With its 20mm focal length, this eyepiece strikes the perfect balance for deep-sky observations, allowing you to view faint, distant objects with stunning clarity, while also offering detailed views of planets like Jupiter and Saturn.

But performance is only part of the story. The argon-purged, waterproof, and fog-proof design means your eyepiece will perform flawlessly in any environment. Whether you're observing from a humid forest or a chilly mountaintop, this eyepiece is engineered to resist fogging and protect against moisture. Unlike nitrogen-purged eyepieces, the argon-purged seal offers a superior barrier against internal fogging and seal degradation, so you can trust this eyepiece to stand up to the toughest conditions for years.

Comfort is key, especially during long stargazing sessions. The 15.3mm eye relief ensures that even eyeglass wearers can enjoy the full field of view without straining their eyes. The foldable silicone rubber eyecup adds extra flexibility, allowing you to adjust for the most comfortable viewing position, whether you’re wearing glasses or observing with your naked eye.

Time is often of the essence when observing the night sky. With the parfocal design, you won’t need to constantly adjust focus when switching between eyepieces. This means more time spent observing and less time fumbling with your telescope’s focus knob, allowing you to concentrate on the stars.

Investing in the Explore Scientific 68° Series 20mm Eyepiece means investing in years of reliable, top-tier performance. Whether you're navigating the Milky Way, observing the rings of Saturn, or hunting for faint galaxies, this eyepiece offers unparalleled optical clarity, durability, and comfort. Don’t let subpar equipment limit your exploration of the cosmos—upgrade to an eyepiece that’s built to deliver the best night sky experience, no matter where your stargazing journey takes you.