William Optics UWAN 16mm Eyepiece 1.25"

The William Optics UWAN 16mm Eyepiece 1.25" gives a great 82 deg. field of view and is ideal for rich-field views at moderate power. Now you can open up the universe in your telescope at an incredible price.

This William Optics eyepiece is among the best sellers in the series, because of its incredible performance on fast focal ratio telescopes.

The super wide field of view offer an outstanding 82 deg ultra-wide field of view . Fully MultiCoated (FMC) glass for excellent light transmittance, reduced chromatic aberration and improved contrast compared to similar eyepieces.

Great contrast, with fully internally blackened (lenses’ edges and internal spacers), no flaring or ghosting on high-contrast objects.

It's light and easy with innovative twist-up rubber eyecup, long eye-relief, 12mm and there are no internal reflections, kidney beaning or other distracting distortions.

This eyepiece has wonderful fit and finish, a high-resistance anodized black barrel, a super smooth design for no hook up in your focuser and threaded for filters’ usage.

William Optics UWAN  16mm 1.25


  • Internally baffled, All lenses' edges and internal spacers blackened, Fully multicoated
  • Focal Length 16mm
  • Field Stop Diameter 28.6mm
  • Lens Structure (#Elements/#Groups) 7/4
  • Field of View 82
  • Eye Relief 12mm
  • Barrel 1.25"
  • Coating FMC
  • Parfocal Yes
  • Weight 200g

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