Whoa! Here's a 10" F8.9 -- a loooong telescope under construction for Sheldon in Greencastle, Pennsylvania. The choice of a "truss" telescope, given the length of the OTA, was a good idea!!The OTA is 83.5" in length...
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| Coming along is the mirror box for Sheldon't 10" F8.9. the altitude bearings are 22" in diameter. Just right!! |
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| The rocker box . Yet to add holes and varnish -- but it's looking good. |
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| Note the "top strut". Strong and light. |
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