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Brendan
23kgs?? Heck, no wonder you are on the skinny it down bandwagon.
I am about 11kgs and that is with a F/T and 5 kilo primary.
The C/F truss was something I dreamed up, tried and then relinquished to a friend who was after a tube system for a 10" mirror. I will ask if he still has it, as the basics were sound.
In the end a truss needs a shroud, either for dewing purposes, or stray light purposes, and this just provided a big sail area. It worked, but the simplicity of a single solid tube was too good to pass up. And it didn't really come at a weight penalty either.
Gary
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