William Optics Flattener/ 0.8x Reducer for GT81 Refractors

  • Sale
  • Regular price $178.00
  • William Optics Flattener/ 0.8x Reducer for GT81 Refractors

    • Sale
    • Regular price $178.00
    • ITEM #



    William Optics Flattener/ 0.8x Reducer for GT81 Refractors

    William Optics Flattener for GT81 Refractors

    This reducer/ field flattener is built to be used with the GT81 APO Triplet and other 80mm f/6 refractors. Effectively reduces the GT81's focal length by 0.8x. Includes Canon EOS T-mount.

    Additional Information

    ManufacturerWilliam Optics

    Questions & Answers

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    • Will this item work for my Orion 80ED APO F/7.5?

      The William Optics Flattener/ 0.8x Reducer is only recommended for William Optics Refractors. Orion does not specifically recommend any flattener for the ED80. However, our customers have had good results using the Hotech SCA Field Flattener: http://www.o

    • I am looking to purchase one but wondering if you have any idea how to mount it to the base of my Questar 3.5

      Hello Dean, Thank you for your question. Unfortunately there is no way to adapt this to a Questar 3.5 " Maksutov Cassegrain short of having a specialized adapter plate made from a machine shop.

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