Sirius Optics 15mm 68 Degree Long Eye Relief Eyepiece

The Sirius Optics 15mm 68° WALER (Wide Angle Long Eye Relief) eyepiece is designed for astronomers who demand both an expansive field of view and a comfortable, forgiving viewing experience. With a generous 68-degree apparent field of view and long eye relief in the 10–15mm range, this eyepiece immerses you in stunning, wide-angle vistas of the night sky without requiring you to press your eye uncomfortably close to the lens. Whether you're scanning open star clusters, tracing the structure of nebulae, or simply enjoying a leisurely tour of the Milky Way, this eyepiece transforms every observing session into a relaxed and rewarding experience.

Eyeglass wearers will particularly appreciate the thoughtful design. Many short focal length eyepieces with wide apparent fields suffer from notoriously tight eye relief, making it nearly impossible to see the full field while wearing glasses. The WALER series addresses this directly, offering enough eye relief to accommodate spectacles comfortably. Additionally, unlike the 6mm and 9mm focal lengths in many eyepiece lines—which can be extremely sensitive to eye placement and prone to the frustrating "kidney bean" blackout effect—the 15mm focal length strikes an excellent balance between magnification and ease of use, providing a stable, shadow-free image that doesn't punish slight head movements.

Optically, this eyepiece delivers sharp, well-corrected views across the field, keeping stars tight and focused from center to edge. The 68-degree apparent field of view places it firmly in the wide-angle category, offering a noticeably more immersive experience than standard Plössl or Kellner designs. This makes it a superb choice for deep-sky observation, where context and framing matter—think the full expanse of the Orion Nebula or the rich star fields of Sagittarius rendered in breathtaking detail.

Ideal for use with a wide range of telescope types including refractors, reflectors, and Schmidt-Cassegrains, the Sirius Optics 15mm WALER is a versatile addition to any eyepiece collection. It's especially well-suited for:

• Extended visual observing sessions where comfort is paramount
• Eyeglass wearers who need generous eye relief without sacrificing field of view
• Deep-sky exploration of nebulae, star clusters, and galaxy groups
• Beginners and experienced observers alike seeking a forgiving, high-performance eyepiece that's easy to look through