Unlock breathtaking, expansive views of the cosmos with the Pentax XW40-R SMC 40mm Eyepiece. Engineered for the discerning astronomer, this premium eyepiece delivers an exceptionally wide 70° apparent field of view, perfect for observing large deep-sky objects like the Andromeda Galaxy or the Pleiades star cluster in their entirety. The advanced optical design features high-refraction, extra-low-dispersion (ED) lanthanum glass elements to produce sharp, well-balanced images with minimal chromatic and spherical aberrations. Pentax's legendary Super Multi-Coating (SMC) is applied to all air-to-glass lens surfaces, maximizing light transmission to over 90% for incredibly bright, high-contrast images with true-to-life color. Comfort is paramount during long observation sessions, and the XW40-R excels with a generous 20mm of eye relief, making it a joy to use for all observers, including those who wear glasses. The JIS Class 4 weatherproof construction ensures reliable performance even when observing in damp conditions or under night dew. Featuring a standard 2-inch barrel, this eyepiece is compatible with a wide range of astronomical telescopes. Elevate your stargazing experience with the unparalleled clarity and comfort of this Pentax eyepiece from Xhunter Australia.

KEY FEATURES

  • Focal Length: 40mm
  • Apparent Field of View: 70°
  • Eye Relief: 20mm
  • Barrel Size: 2 inch (50.8mm)
  • Lens Construction: 6 elements in 5 groups
  • Optical Material: High-refraction, extra-low-dispersion Lanthanum glass
  • Coatings: Fully Super Multi-Coated (SMC)
  • Weatherproofing: JIS Class 4 Weatherproof Construction
  • Eyecup: Twist-up rubber eyecup
  • Weight: 700g (24.7 oz)
  • Model Number: 70538
SKU PT129986LP
Model # 70538
Barcode # 027075301696
Brand Pentax
Shipping Weight 0.4000kg

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