Pentax XW 20mm Eyepiece
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Vai al moduloPENTAX XW 20mm – Wide-Angle Eyepiece with 20mm Eye Relief, Waterproof
The PENTAX XW 20mm eyepiece is engineered for outstanding optical performance, designed for both astronomy and terrestrial spotting scopes. With a 70° apparent field of view, a 20mm long eye relief, and a waterproof body, it ensures bright, sharp, and comfortable viewing in all conditions.
Main Features
- Exceptional performance with wide field and immersive perspective
- Universal compatibility with 1.25" and 2" focusers and PENTAX spotting scopes
- Lanthanum glass elements with high refractive index and low dispersion to minimize aberrations
- PENTAX SMC multi-coating for light transmission over 90% (up to 96% at 550nm)
- Computer-optimized design to reduce internal reflections and enhance image contrast
- Removable eyecups with 43mm diameter and 0.75mm pitch thread for adapters
- Waterproof construction JIS Class 4, resistant to rain and humidity
- 70° apparent field of view for wide and detailed observations
- 20mm eye relief for maximum comfort, suitable for eyeglass wearers
High-End Optics for Brilliant Images
The PENTAX XW series eyepieces feature lanthanum glass elements with high refractive index and low dispersion, delivering balanced, distortion-free images. Spherical aberration of the exit pupil is corrected to minimize blackout and ensure stable viewing.
Waterproof Construction for Any Condition
With JIS Class 4 waterproofing, this eyepiece is resistant to rain and humidity, making it ideal for astronomical nights and outdoor use. Not suitable for underwater applications.
Technical Specifications
| Model | PENTAX XW 20mm |
| Focal Length | 20mm |
| Apparent Field of View | 70° |
| Eye Relief | 20mm |
| Lens Coating | PENTAX SMC multi-coating + special anti-reflective layer |
| Waterproofing | JIS Class 4 (rain and humidity resistant) |
| Barrel Size | 31.7mm (1.25") and 50.8mm (2") |
| Adapter Thread | Ø 43mm – pitch 0.75mm |