Pentax SMC XW 14mm 1.25" Eyepiece

The Pentax SMC XW 14mm 1.25" Eyepiece is a high-performance wide-angle eyepiece engineered for astronomers and terrestrial observers who demand exceptional image quality, long-term viewing comfort, and dependable all-weather construction. Designed to work seamlessly with Pentax spotting scopes and astronomical telescopes, this eyepiece delivers sharp, high-contrast views across a wide range of observing applications.

Wide and Immersive Viewing Experience

Featuring a 70-degree apparent field of view, the XW 14mm offers an immersive visual experience ideal for deep-sky objects, lunar observation, and wide-field scanning. This expansive field helps keep objects comfortably framed, making it especially beneficial for manual tracking and extended observing sessions.

Long Eye Relief for Viewing Comfort

The eyepiece provides a generous 20mm eye relief, ensuring comfortable viewing for both eyeglass and non-eyeglass wearers. This long eye relief reduces eye strain and allows relaxed observation over long periods without compromising image quality.

Advanced Lanthanum Optical Design

At the heart of the optical design are high-refraction, extra-low dispersion lanthanum glass elements, which minimise chromatic aberration and distortion while maintaining excellent sharpness from centre to edge. Combined with fully multi-coated lenses, the XW 14mm delivers high light transmission, accurate colour reproduction, and improved contrast even when observing faint targets.

Enhanced Contrast and Stray Light Control

Pentax’s advanced computer-optimised optical design incorporates precisely positioned internal baffles and light-shielding diaphragms to suppress stray light and internal reflections. The result is a cleaner, darker background and improved visibility of fine detail.

Weather-Resistant and Broadly Compatible

Built for reliability in real observing conditions, the Pentax XW 14mm features JIS Class 4 weatherproof construction, allowing confident use in humid environments, light drizzle, or heavy night dew. The 1.25-inch (31.7mm) barrel ensures broad compatibility with standard telescope focusers and Pentax PF-series spotting scopes, while maintaining secure filter attachment via the 28.6mm filter thread.

Balancing wide-field immersion, premium optical materials, long eye relief, and rugged durability, the Pentax SMC XW 14mm Eyepiece is an excellent choice for observers seeking consistent, high-quality performance across both astronomical and terrestrial viewing.