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10 inch F/10 Thompson Optical Refractor tube assembly For Sale

Price - $3,000.00

Ad Number: 135155

Posted: 21 Apr 2018

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You'll feel like Percival Lowell when you're at the helm of this 10" 100" focal length beauty. Made by the Thompson Optical Company in California, for the government in the 60's. Tube is fiberglass, inside black with aluminum end ring / cell holder. The baffle system is a finely machined series of discs with 4 aluminum rods running the length to the backplate, also aluminum, focus attachment. Rack and pinion is basic refractor tailpiece. 10"+ objective has small chip mostly covered by cell. I have two of them from a government program shut down 20 years ago. Many wonderful nights observing. 10" Optical Tube Assembly only. Mounting, guide scope, and and rings not included. $3000 OBO, shipping and insurance extra.


  • Condition Great
  • Location Central Wisconsin

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