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Used Telescopes Buyback

Pentax Eyepieces

12 Items

Pentax 3.5 mm XW Series 1.25" Eyepiece - 70511

SKU: PEN-70511
  • Focal Length: 3.5 mm
  • Apparent Field of View: 70 degrees
  • Barrel Size: 1.25"
  • Eye Relief: 20 mm
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$299.00

Pentax 5.0 mm XW Series 1.25" Eyepiece - 70512

SKU: PEN-70512
  • Focal Length: 5 mm
  • Apparent Field of View: 70 degrees
  • Barrel Size: 1.25"
  • Eye Relief: 20 mm
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$299.00

Pentax 7 mm XW Series 1.25" Eyepiece - 70513

SKU: PEN-70513
  • Focal Length: 7 mm
  • Apparent Field of View: 70 degrees
  • Barrel Size: 1.25"
  • Eye Relief: 20 mm
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$299.00

Pentax 10 mm XW Series 1.25" Eyepiece - 70514

SKU: PEN-70514
  • Focal Length: 10 mm
  • Apparent Field of View: 70 degrees
  • Barrel Size: 1.25"
  • Eye Relief: 20 mm
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$299.00

Pentax 14 mm XW Series 1.25" Eyepiece - 70515

SKU: PEN-70515
  • Focal Length: 14 mm
  • Apparent Field of View: 70 degrees
  • Barrel Size: 1.25"
  • Eye Relief: 20 mm
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$299.00

Pentax 20 mm XW Series 1.25" Eyepiece - 70516

SKU: PEN-70516
  • Focal Length: 20 mm
  • Apparent Field of View: 70 degrees
  • Barrel Size: 1.25"
  • Eye Relief: 20 mm
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$299.00

Pentax XW40-R 40mm 2" Eyepiece - 70538

SKU: PEN-70538
  • Focal Length: 40 mm
  • Apparent Field of View: 70 degrees
  • Eye Relief: 20 mm
  • Barrel Size: 2"
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$399.00

Pentax XW30-R 30mm 2" Eyepiece - 70537

SKU: PEN-70537
  • Focal Length: 30 mm
  • Apparent Field of View: 70 degrees
  • Eye Relief: 20 mm
  • Barrel Size: 2"
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$369.95

Pentax 8.5 mm XF Series 1.25" Eyepiece - 70531

SKU: PEN-70531
  • Focal Length: 8.5 mm
  • Apparent Field of View: 60 degrees
  • Barrel Size: 1.25"
  • Eye Relief: 18 mm
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$129.00

Pentax 12mm XF Series 1.25" Eyepiece - 70532

SKU: PEN-70532
  • Focal Length: 12 mm
  • Apparent Field of View: 60 degrees
  • Barrel Size: 1.25"
  • Eye Relief: 18 mm
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$129.00

Pentax 6.5mm - 19.5mm XF Series Zoom 1.25" Eyepiece - 70530

SKU: PEN-70530
  • Focal Length: 6.5mm - 19.5mm
  • Apparent Field of View: Depends on Spotting Scope Model
  • Barrel Size: 1.25"
  • Eye Relief: 11 mm to 15 mm
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$289.00

Pentax 8mm - 24mm SMC Waterpoof Zoom 1.25" Eyepiece - 70509

SKU: PEN-70509
  • Focal Length: 8mm - 24mm
  • Apparent Field of View: Depends on Spotting Scope Model
  • Barrel Size: 1.25"
  • Eye Relief: 18 mm to 22 mm
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$359.00

Pentax’s XW Series features all high-quality eyepieces, offering a 70° apparent field of view through high-refraction, low dispersion Lanthanum glass elements. This gives the observer bright, high-resolution views with minimal aberration and distortions. The XW eyepieces offer 20mm of eye relief, perfect for observers who wear glasses while observing. The chrome barrel provides a sleek, durable base that easily threads into your scope. Lens edges have been blackened to reduce internal reflections and increase contrast.

You’ll also find Pentax’s XF Series, which offers a 60° apparent field of view and SMC coated optics.

When researching eyepieces, be sure to pay attention to the eyepiece’s focal length, apparent field of view, eye relief, and barrel size so you can equip your scope with the best selection of eyepieces. These factors are essential to understanding the eyepiece. To learn more, visit our post on understanding Telescope Eyepieces. If you have any questions or need help choosing an eyepiece, feel free to reach out to our experts.