Pentax XW 7mm

Pentax XW 7mm


In stock - Shipped 1-2 working days.

Model:  PentaxXW7
Part Number:  70513
Brand:  Pentax

An excellent choice for medium to high power observing. 


  • High-refraction, low-dispersion Lanthanum glass.
  • Pentax Super Multi-Coatings (SMC) on all air/glass surfaces.
  • Edge-blackened optics and optimised baffles minimise internal reflections.
  • Optically corrected for use with focal ratios as fast as f/4.
  • 20mm eye-relief and twist-up rubber-rimmed eyecups - perfect for spectacle wearers.
  • Chromed barrels threaded to accept filters.
  • Weatherproof to JIS Class 4 standards.
Lens Structure: 8 elements, 6 groups
Focal Length: 7mm
Apparent Field of View: 70 degrees
Eye Relief: 20mm
Attachment Diameter: 1.25" (31.7mm)
Filter Diameter: 28.6mm
Field Stop Diameter: 8.8mm
Eyepiece Ring: Helicoid type
Height & Width: 4.7" x 2.4"
Weight: 13.8 oz. (390g)

Eyepiece Field of View Simulator

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Excellent eyepiece
Wednesday, 29 August 2018  | 

Bought this eyepiece because it has 20 mm which I need when I observe wearing eyeglasses. I have used it with a Tak FC-100, Vixen SD81S, Vixen A80M and Celestron C8 on moon, planets, double stars and DSOs.

Performance is excellent, producing excellent sharpness and contrast, and aberrations are extremely well controlled. Also, the eyepiece has an excellent quality feel to it and is very comfortable to use. Highly recommended.

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June 2018 / View Older
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