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Q1: any eyepiece can be used in this product, including the 2" eyepiece?

A: i am sorry but no it will only work with 1.25" eyepieces.

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Lumicon BinoViewer

Item# LUMI052

 

Lumicon BinoViewer

Binoviewers allow you to use both eyes while looking through your telescope. These new high-quality German-made telescope binocular viewers employ Grade-A BK 7 crown glass for their precision-polished prisms. Ordinarily, BaK 4 is used as a recourse to improve color correction, but in these binocular viewers color correction is so good that we may use the most transparent, homogeneous, bubble-free crown glass availableBK 7. Clear aperture is 22mm. Its straight-through design employs superior roof prisms for image erection. Each prism surface is multicoated for the highest transmission of light and freedom from ghosts. Focuser travel is 20mm. Installs in seconds into a standard 1.25" focusing mount. Eyepieces not included.

Specifications:

  • Clear aperture: 22mm
  • Efficient beam-splitter design
  • Multicoated roof prism erecting system
  • 1.25" focuser, threaded for filters
  • Overall length: 120mm
  • Weight: 23 oz. '
  • Guarantee