Quote:
Originally Posted by DavidU
Ian, don't you think 3mm CF is overkill? I would have thought 1.5 to 2mm
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Well , being to new CFC tubes .... I really don't know.
2mm would be pretty good ==> my tube would be 4kg cf 11kg for UPVC
1.5mm ==> 2.5kg !! but will it be stiff enough to hold collimation and strong enough where it counts (ie where the focusor , spider and mirror cell are mounted and where the tube rings are ) ?