Pentax SMC XW 20mm 1.25" eyepiece

Pentax Eyepieces: Precision Optics for High-Grade Spotting Scopes

XW-Series

Experience clear and comfortable viewing with the Pentax XW-Series eyepieces. Offering an extra-wide 70-degree apparent angle of view and an extended 20mm eye relief, these eyepieces deliver an immersive, wide-perspective image for enhanced observation.

High-Grade Optics for Exceptional Image Quality

The XW-Series optics feature high-refraction, extra-low-dispersion lanthanum glass elements, ensuring a well-balanced image with minimal aberrations. Specifically designed to counteract the disruptive blackout effect, they effectively compensate for pupil spherical aberration, resulting in sharp, clear views.

Pentax-Original Multi-Layer Coating for Outstanding Light Transmission Efficiency

Equipped with Pentax's original multi-layer coating, these eyepieces optimize light transmission efficiency. Air-contacting lens surfaces benefit from the original multi-layer coating, while laminated surfaces receive an innovative partial coating, achieving transmission rates exceeding 90% across the visible light spectrum.

Advanced Light-Shielding Technology for Improved Image Contrast

Utilizing Pentax's advanced computer simulation technology, the XW-Series features a strategically positioned light-shielding diaphragm, significantly reducing internal reflections for brighter, higher-contrast images.

A Choice of Four Magnifications to Meet Specific Applications

Select from four different magnifications (7mm, 10mm, 14mm, and 20mm) to suit your specific observing needs, catering to both casual and specialized applications.

Weatherproof Construction for All-Weather Viewing

With JIS Class 4 weatherproof construction, the XW-Series is built to withstand various conditions, allowing for observation even in drizzle or under nighttime dew. Note: These eyepieces are not designed for underwater use and should not be submerged.

SPECIFICATIONS

Focal Length (mm): 20

Apparent Field of View (°): 70

Eye Relief (mm): 20

Number of Lenses: 6

Number of Groups: 4

Connection (to the telescope): 1.25"

Connector (at camera end): M43

Coating of Optical System: Multiple

Field Stop (mm): 24

Transmission: 96 (at 550nm)

Special Features: Adjustable Eyepiece Cup (Rotatable), Optional Camera Adapter, Filter Thread

Inert Gas Charge: No

General: Type: Eyepiece, Build Type: SWA, Series: XW, Weight (g): 355, Length (mm): 86, Diameter (mm): 61