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The William Optics SPL 55° 12.5mm Eyepiece is a high-quality optical accessory designed for astronomical telescopes. This eyepiece offers a comfortable 55-degree apparent field of view, providing clear and detailed views of celestial objects. With its 12.5mm focal length, it's well-suited for medium to high magnification observations of planets, lunar features, and compact deep-sky objects.
Designed for use with telescopes that accept 1.25-inch eyepieces. Ensure your telescope is compatible before purchasing.
Optical Design
Incorporates a sophisticated multi-element design optimized for sharp, high-contrast views. The SPL (Super Planetary Long Eye Relief) series is specifically engineered to provide excellent performance for planetary and lunar observations.
Field of View
Features a 55-degree apparent field of view, offering a comfortable and immersive observing experience. This field of view balances a sense of spatial context with the ability to concentrate on fine details, making it particularly suitable for planetary and lunar observations.
Focal Length:
With a 12.5mm focal length, this eyepiece provides medium to high magnification, depending on the telescope's focal length. It's excellent for detailed observations of lunar craters, planetary features, double stars, and compact deep-sky objects like globular clusters.
Eye Relief
Offers generous eye relief, allowing for comfortable viewing, especially beneficial for eyeglass wearers. The "Long Eye Relief" design of the SPL series ensures a relaxed and strain-free observing experience, even during extended viewing sessions.
Construction
Crafted with high-quality materials, including a durable metal housing and a soft rubber eye guard for comfort. The 1.25-inch barrel ensures compatibility with a wide range of telescopes and accessories.
Coatings
Features multi-layer anti-reflection coatings on all air-to-glass surfaces to maximize light transmission and reduce glare. This ensures high-contrast views with accurate color rendition, critical for planetary and lunar observations.
Versatility
While optimized for planetary and lunar viewing, this eyepiece is versatile enough for various astronomical applications. Its moderate magnification and comfortable field of view make it suitable for observing a wide range of celestial objects, from planets and double stars to brighter deep-sky objects.
