Explore Scientific 15mm 52° Argon-Purged Eyepiece
For amateur and experienced astronomers alike, the Explore Scientific 15mm 52° Series Eyepiece is a solid choice for deep-sky and planetary observation. With premium optics, a comfortable field of view, and a rugged waterproof design, this eyepiece delivers sharp, high-contrast images across the entire field while standing up to the elements.
Fully Multi-Coated Optics for Crisp, High-Contrast Views
A good eyepiece can make all the difference in your viewing experience, and Explore Scientific’s 15mm 52° Series is designed to maximize performance. The fully multi-coated lenses reduce internal reflections and light scatter, producing bright, high-contrast views with excellent color fidelity. Whether you're resolving fine details on Jupiter’s cloud bands or bringing distant nebulae into focus, this eyepiece delivers a clean, high-resolution image.
Comfortable 52° Apparent Field of View
At 15mm focal length, this eyepiece provides a moderate magnification level, making it ideal for lunar and planetary observation as well as deep-sky objects like star clusters, galaxies, and nebulae. The 52-degree apparent field of viewoffers a natural and immersive experience without the tunnel-vision effect found in narrower designs. It’s a great middle-ground for those who prefer a wider view but don’t necessarily need the extreme expanses of an 82° or 100° eyepiece.
Argon Purged and Waterproof for Longevity and Performance
Unlike traditional nitrogen purging, which can dissipate over time, Explore Scientific fills their 52° Series eyepieces with argon gas. This heavier inert gas provides better resistance against internal fogging and ensures the optical elements remain free of moisture—even in humid or cold environments. The fully sealed, waterproof design also protects against dust and contaminants, preserving optical clarity for years to come.
Long Eye Relief and Foldable Eyecup for Viewing Comfort
With comfortable eye relief, this eyepiece allows extended viewing sessions without strain. The foldable rubber eyecup provides flexibility for both glasses wearers and non-glasses users, ensuring a customizable viewing experience. If you wear eyeglasses while observing, you’ll still be able to take in the full field of view with minimal vignetting.
Threaded for Filters to Enhance Viewing
The barrel of the 15mm 52° Series eyepiece is threaded to accept standard 1.25" filters, allowing you to enhance contrast, reduce glare, or bring out specific details depending on your observing target. Whether you’re using a moon filter to tone down brightness, a UHC filter to boost nebula contrast, or a polarizing filter to enhance planetary details, this eyepiece adapts to your needs.
Precision Machined 1.25” Barrel for Secure Fit
The 1.25-inch anodized aluminum barrel ensures compatibility with most modern telescopes while maintaining a secure and stable fit in your focuser or diagonal. The barrel is also precision-machined and blackened internally to minimize stray light and maximize contrast.
Why Choose the Explore Scientific 15mm 52° Eyepiece?
- Fully multi-coated optics for sharp, high-contrast views
- 52° apparent field of view for an immersive experience
- Argon purged and waterproof for long-term durability
- Long eye relief with a foldable rubber eyecup for comfortable viewing
- Standard 1.25” filter threading for added versatility
- Precision-machined aluminum barrel for a secure fit
Whether you're upgrading from stock eyepieces or expanding your collection, the Explore Scientific 15mm 52° Series Eyepiece is a well-rounded performer that offers high-end features at a reasonable price. With its solid construction and superior optical performance, this eyepiece is a great addition to any observer’s toolkit.
