Sky-Watcher Ultra Wide 16mm 1.25" Eyepiece 65° AFOV

The Sky-Watcher Ultra Wide 16mm 1.25" Eyepiece is a versatile optical accessory featuring an expansive 65° apparent field of view. This wide-angle design allows for immersive observations, providing a broader perspective of celestial targets compared to standard eyepieces. Its 16mm focal length is ideal for medium-power viewing, making it a well-balanced choice for exploring star clusters, nebulae, and the lunar surface.

Engineered for convenience and ease of use, the eyepiece is fully compatible with any standard 1.25" telescope focuser barrel. It specifically features a fold-down rubber eyecup designed to provide a comfortable viewing experience for all users, including those who wear eyeglasses. By blocking stray light and allowing for adjustable eye positioning, this eyepiece ensures sharp and uninterrupted views during extended stargazing sessions.

Product Features in Detail

Expansive 65° Panoramic Perspective

The standout feature of this eyepiece is its 65° Apparent Field of View (AFOV). This wide-angle design provides a "porthole" effect, allowing you to see a much larger portion of the sky at once compared to standard eyepieces. It is particularly effective for tracking moving objects and observing sprawling celestial targets like the Pleiades or the Orion Nebula.

Versatile Mid-Range Magnification

With a 16mm focal length, this eyepiece sits in the "sweet spot" of astronomical observation. It provides enough magnification to resolve structural details in galaxies and nebulae while maintaining a sufficiently large exit pupil to keep the image bright and vibrant, even in telescopes with moderate apertures.

Eyeglass-Friendly Ergonomics

The fold-down rubber eyecup is specifically engineered for accessibility. For users who wear glasses, folding the eyecup down allows the eye to get closer to the lens to see the full 65° field without removing their spectacles. Non-wearers can keep the eyecup extended to block out distracting side-light.

Universal 1.25-Inch Compatibility

Designed for maximum versatility, the eyepiece is compatible with all standard 1.25" (31.7mm) focuser barrels. This ensures that it can be used across a wide variety of telescope types, from small portable refractors to large computerized Dobsonian reflectors, making it a flexible addition to any collection.

Optimized Visual Comfort

Beyond its wide field, the internal optical layout is designed for comfortable viewing. By providing a generous eye relief and a wide eye lens, Sky-Watcher has minimized "eye strain" during extended stargazing sessions, allowing you to focus on the intricate details of the lunar surface or planetary disks for longer periods.

Stray Light Suppression

The integration of the rubber eyecup does more than just provide comfort; it serves as a functional light shield. By sealing the area between your eye and the lens, it eliminates reflections from nearby streetlights or porch lights, preserving your dark adaptation and ensuring the highest possible contrast in your view.