Explore Scientific 52° Series 2" 40mm Waterproof Eyepiece

Reveal Hidden Celestial Wonders

Tired of dull and blurry views through ordinary eyepieces? With the Explore Scientific 52° Series 2" 40mm Eyepiece, you get brilliant light transmission and vivid detail—even in low light—so you never miss a moment of celestial beauty.

Features

• 40mm Focal Length: Delivers a wide true field of view, ideal for observing expansive celestial objects such as the Andromeda Galaxy, large star clusters, and nebulae.
• 52° Apparent Field of View: Immersive wide-angle perspective lets you explore the night sky with fewer adjustments and greater ease.
• 2" Diameter Barrel: Optimized for telescopes with larger apertures, providing a broader, more detailed view of deep-sky objects.
• Fully EMD Multi-Coated Optics: Enhanced light transmission and superior clarity, even when observing faint celestial bodies in low-light conditions.
• Argon-Filled, Waterproof & Fogproof: Weather-resistant construction ensures clear, uninterrupted viewing in any condition—perfect for outdoor observing sessions.
• Slip-Resistant Textured Surface: Designed for secure handling during setup and adjustment, even in cold or humid environments.
• Fold-Down Eyecup: Provides adjustable comfort for all observers, whether you wear glasses or not, and helps block stray light for a clearer view.
• Longest Eye Relief in the Series: With 27.1mm of eye relief, extended viewing sessions are comfortable, reducing eye fatigue and allowing relaxed observation of the cosmos.
• Designed for Averted Vision: Perfect for deep-sky enthusiasts looking to capture faint, elusive objects using this advanced observational technique.

The Explore Scientific 52° Series 2" 40mm Waterproof Eyepiece is for you if…

• You love deep-sky observation and want to explore galaxies, nebulae, and star clusters in stunning clarity and detail.
• You own a telescope with a 2" focuser and need an eyepiece that can maximize its performance for immersive wide-angle views.
• You want superior optical performance, with fully multi-coated lenses that enhance light transmission, contrast, and color fidelity, even in dim conditions.
• You’re looking for an eyepiece that offers comfort during extended use, with long eye relief to reduce strain during long stargazing sessions.
• You often observe in outdoor conditions and need durable equipment that is waterproof, fogproof, and resistant to environmental challenges.
• You want to see faint celestial objects that are normally hard to observe with standard eyepieces, thanks to a design that facilitates averted vision techniques.
• You’re serious about getting the most out of your telescope and need a high-quality eyepiece to reveal the full potential of your setup.

If you’re serious about deep-sky observation, the Explore Scientific 52° Series 2" 40mm Waterproof Eyepiece is the upgrade your telescope needs to truly bring the cosmos to life. With its 40mm focal length and 52° apparent field of view, this eyepiece allows you to capture expansive celestial objects—like the Andromeda Galaxy or large star clusters—in stunning detail, without constantly adjusting your telescope. This wide-angle view enhances your ability to observe the night sky as a whole, making it the perfect choice for serious astronomers who want to maximize their time spent exploring.

No more squinting or eye fatigue during long observation sessions. The 27.1mm eye relief provides unmatched comfort, allowing you to spend hours scanning the stars without straining your eyes. Whether you wear glasses or not, the fold-down eyecup adapts to your needs, ensuring you can focus fully on the wonders of the universe, instead of worrying about discomfort.

Optical clarity is key to deep-sky viewing, and the fully EMD multi-coated optics on this eyepiece ensure you get the clearest, brightest views possible. Say goodbye to the frustration of dull, blurry images—this eyepiece provides maximum light transmission and contrast, allowing you to see even faint celestial objects with sharpness and precision. You’ll be able to capture details that most eyepieces miss, from the soft edges of nebulae to the distant glow of galaxies.

Built to withstand the elements, the argon-purged, waterproof, and fogproof construction means you can observe in any environment. Whether you're in humid, rainy, or cold conditions, you’ll always have crystal-clear views. This eyepiece is designed to last, ensuring that no matter where your stargazing adventures take you, your equipment will always perform at its best.

If you’re looking to push your telescope to its limits and uncover the deepest mysteries of the night sky, the Explore Scientific 52° Series 2" 40mm Eyepiece is the tool you need. It’s more than just an eyepiece—it’s a gateway to the universe, offering a viewing experience that will leave you breathless. Don't settle for less when you can explore the cosmos with precision, clarity, and comfort.