Pentax XW 5mm
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Pentax XW 5mm

£249.00✓ 2 year warranty

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About this product

Model:  PentaxXW5
Part Number:  70512

 

This short focal length eyepiece is particularly popular as it delivers more-or-less the maximum useful magnification from an 8-inch or 10-inch f/10 Schmidt-Cassegrain telescope.

Features

  • 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, 5 groups
Focal Length: 5mm
Apparent Field of View: 70 degrees
Eye Relief: 20mm
Attachment Diameter: 1.25" (31.7mm)
Filter Diameter: 28.6mm
Field Stop Diameter: 6.2mm
Eyepiece Ring: Helicoid type
Height & Width: 5.0" x 2.4"
Weight: 14.0 oz. (395g)

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