Product Overview

Discover the Pentax XW40-R eyepiece, a marvel of optical engineering designed for both amateur stargazers and seasoned astronomers. With its 40mm focal length and an expansive 70° apparent field of view, this eyepiece offers a breathtaking window into the cosmos. Crafted with high-refraction, extra-low-dispersion lanthanum glass, it ensures minimal aberrations and delivers crisp, clear images with outstanding contrast. Whether you're observing the intricate details of nebulae or the vast expanse of star clusters, the XW40-R provides a comfortable viewing experience with its 20mm eye relief, making it ideal for extended sessions under the night sky.

Key Features

  • 40mm focal length provides a wide field of view, ideal for deep-space exploration.
  • 70° apparent field of view and 20mm eye relief ensure comfortable viewing, especially for eyeglass wearers.
  • Constructed with high-refraction, extra-low-dispersion lanthanum glass to minimize optical aberrations and maintain sharp detail.
  • Multi-coated layers provide over 90% light transmission, peaking at 96% at 550nm for enhanced image clarity.
  • Light-shielding diaphragm positioned to minimize reflections and stray light, improving contrast.
  • Weatherproof construction allows for all-weather viewing, suitable for use in drizzle or under night dew.

Included in the Box:

  • Pentax XW40-R 40mm Wide-Angle Eyepiece (2")
  • Plastic Case
  • 2 x Caps
  • Limited 25-Year Manufacturer Warranty
SKU PEN70538
Model # 70538
Brand Pentax
Length 117mm
Weight 740 grams

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