Pentax 5mm SMC-XW Series 1.25" Wide Angle Eyepiece with 70 Degree Field of View


List Price: $439.00

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Pentax 5mm SMC-XW Features

  • 70 Degree Field of View, Long eye relief
  • Fully Multi Coated
  • High Refraction, Low dispersion Lanthanum Glass elements deliver bright, high resolution images with minimal aberrations and distortions
  • JIS Class 4 Weather Proof Construction
  • Limited Lifetime warranty

Pentax 5mm SMC-XW Specifications

Lens Structure:
8 elements, 5 groups
Apparent Field of View:
Eye Relief:
Field Stop Diameter:
5.4 x 2.4 in.
14.0 oz.

Pentax 5mm SMC-XW Reviews

Reviewed by 1 customers


One of my best purchases


from Texas

I use this in a variety of apochromatic and achromatic refractors ranging from 70mm to 152mm. Used for both astronomy and terrestrial viewing. It is simply the best 5mm eyepiece I ever put into any of those scopes. Even in an F/5.5 scope it still provides a flat field of view with excellent sharpness across the entire field. On planets the level of contrast and lack of reflections and ghosting is astonishing, especially considering the number of glass elements involved. Light transmission is extremely high and easily a match to any minimal glass eyepiece like an orthoscopic.

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