William Optics
William Optics 1.25" 90° Erect Prism for Cat 51 WIFD
William Optics 1.25" 90° Erect Prism for Cat 51 WIFD
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High quality erecting prism with Red anodized plate , the complete housing is made by 6061T Aluminium by CNC .
This 1.25" 90 deg. erecting prism will very useful for daytime observations.
- Image erecting BAK7 prism with anti-reflection coating.
- High accuracy and high light transmission prism.
- 1.25” barrel for any 1.25” eyepieces.
Unique design & Superior Craftsmanship
- Internally matte blackened and threaded for no internal stray light reflection.
- Entirely aluminum, red anodized.

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