William Optics 1.25" 90-deg Erecting Prism Diagonal with Helical Focusing # D-EP90-125II

Our Price: $83.00
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In Stock (4 Available)
Ships by Next Business Day
Our Product ID: ODIA-WO-D-EP90-125II
Manufacturer SKU: D-EP90-125II
Item Can Ship: Worldwide
William Optics 1.25" 90-deg Erecting Prism Diagonal with Helical Focusing # D-EP90-125II

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Product Details

All New 90 degree high quality erecting prism with helical focuser barrel.

Another beautiful product exclusively from WO.

This 1.25" 90 deg. erecting prism will very happy to be used with that nice premium refractor of yours! Perfect for daytime observations too.

Precision Prism

  • Image erecting BAK4 prism with anti-reflection coating.
  • High accuracy and high light reflection prism.
  • Helical focusing on the top barrel for fine  adjustment.

Superior Craftsmanship

  • Internally matte blackened and threaded for no internal stray light reflection.
  • Threaded for 1.25" filters.

Beautiful Finish

  • Entirely aluminum, black anodized.
  • Smooth finish.


  • Clear aperture = 20.2mm
  • Weight = 6.5oz