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William Optics 1.25" 90° Dielectric Coating Diagonal

4.0 (1 Reviews) Read Reviews Write Review
Brand William Optics
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1.25" 90° Dielectric Coating Diagonal


4.0 (Based on 1 Reviews) 100% of reviewers recommended this product.
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    1. titaniumADRIAN

      titaniumADRIAN New Member

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      User Notes:
      Mar 17, 2009

      4.0 The Perfect 1.25" Diagonal


      Dielectric coating, Polished to 1/10th wave accuracy, Carbon Fiber side plates, Internally anti-reflection threaded


      The 1.25” barrel is tapered, not recessed


      Great diagonal! It came with the purchase of a WO ZenithStar 66 SD APO and it's a match made in heaven. This dielectric coating diagonal will give you all you need for any type observations with its great brightness, contrast and sharpness. I was using a regular diagonal for years but I have seen the light - 99% of it. It is strong and well made but yet light. And it has a brass compression ring to prevent marring. A beautiful piece of art and science. One minor problem is that the 1.25” barrel is tapered, not flat with a recess. The tapered barrel will make the the whole diagonal move (just a bit) unless you over-torque the thumbscrew.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No
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