Explore Scientific 40mm 52° Series Waterproof Eyepiece

Explore Scientific 40mm 52° Eyepiece – Ultra-Comfortable Viewing with Exceptional Contrast

If you’re looking for an eyepiece that delivers generous eye relief, pinpoint sharpness, and immersive views of deep space objects, the Explore Scientific 40mm 52° Series Eyepiece is a fantastic choice. Designed for comfort and performance, this long focal length eyepiece is perfect for wide-field observations, especially with telescopes that have longer focal ratios.

Expansive 52° Apparent Field of View

With a 52-degree apparent field of view, this eyepiece offers a well-balanced combination of immersive spacewalk-like views and practical usability. Unlike ultra-wide designs that may require head positioning adjustments, the 40mm 52° provides a naturally framed experience, making it an excellent option for scanning star fields, nebulae, and globular clusters.

Long 40mm Focal Length for Low Power and Maximum Exit Pupil

A 40mm focal length eyepiece is ideal for achieving low magnifications, making it perfect for maximizing the field of view in SCTs, Maksutovs, and refractors. Whether you’re observing the Andromeda Galaxy in its full glory or sweeping across the Milky Way for open clusters, this eyepiece enhances visibility by offering a bright, detailed image with an expansive perspective.

Fully Multi-Coated Optics for Enhanced Contrast and Light Transmission

The Explore Scientific 40mm 52° Series Eyepiece features fully multi-coated optics, reducing reflections and improving overall light transmission. This means crisper details, darker backgrounds, and better contrast when observing faint deep-sky objects like nebulae and galaxies. Even subtle planetary details become more defined, providing an enhanced viewing experience.

Generous 28mm Eye Relief – Ideal for Eyeglass Wearers

With an impressive 28mm of eye relief, this eyepiece is a dream for those who wear glasses. It allows for a full field of view without having to press your eye uncomfortably close to the lens. Whether you prefer to observe with or without glasses, the 40mm 52° ensures a relaxed, fatigue-free viewing session.

Waterproof and Argon-Purged for Long-Term Durability

Like all Explore Scientific eyepieces, this model is waterproof and argon-purged, making it resistant to internal fogging and protecting the internal optics from moisture or contaminants. Whether you observe in humid conditions or varying temperatures, this eyepiece maintains pristine clarity.

2-Inch Barrel Size for Maximum Light Gathering

Designed with a standard 2-inch barrel, the 40mm 52° takes full advantage of your telescope’s light-gathering capabilities. The 2-inch format allows for a wider true field of view compared to 1.25-inch eyepieces, making it ideal for deep-sky observations. It also ensures compatibility with a wide range of diagonals and focusers.

Ideal Applications for the Explore Scientific 40mm 52° Eyepiece

• Deep-Sky Observing: Enjoy stunning wide-field views of large deep-space objects such as the Veil Nebula, Andromeda Galaxy, and the Pleiades star cluster.
• Star-Hopping Navigation: Easily locate celestial objects and scan rich star fields with its low power and broad perspective.
• Lunar and Planetary Viewing: While primarily designed for deep-sky use, this eyepiece offers beautiful, full-disk views of the Moon and large-scale planetary details.
• Telescope Compatibility: A perfect match for Schmidt-Cassegrains, Dobsonians, refractors, and Maksutovs, especially those with longer focal lengths.

Why Choose the Explore Scientific 40mm 52° Eyepiece?

• Outstanding clarity and contrast with fully multi-coated optics
• Relaxed viewing thanks to 28mm eye relief, great for eyeglass wearers
• Waterproof and nitrogen-purged for durability in all conditions
• Low-power, wide-field performance for breathtaking deep-sky views

If you’re looking for a well-crafted, optically superior eyepiece that delivers expansive, sharp, and contrast-rich views, the Explore Scientific 40mm 52° Eyepiece is an excellent investment. Perfect for both seasoned astronomers and beginners, this eyepiece will enhance your viewing experience and bring the wonders of the night sky to life.