[CoombellKid]

I knew this system wasn't going to cut it for astronomical purposes as
is. Especially when you have minute movements required at this aperture.
There is no stretch and compression in this arrangement, and is why it
is reffered to strut instead of truss. Truss where you have an equal
amount of members being compressed and stretched in any direction
you want to twist the Sec'cage, say 6-8 (3-4 pairs) members in a truss
dob arrangement the poles are angled/locked hence being stretched or
compressed and NOT bent laterially, you would of been better to attach
guy lines to each strut, as you will have only minimised movement/flex by
adding three more struts. However I was confident that the box nature
of the struts would of sufficed, but I do see they dont seat very deep.
But also the struts you have added, seat deep and are box you probably
could get away with leaving out the GSO struts.

Then there is the steal tube mirror box, which I guess unless it has baffles
down it's length will probably flex too. It's only strength really coming from
the mirror cell at it's base. Does it have baffles?

I'm not trying to knock your scope, but it's overall design needs to answer
a few Q's. But personally I really think take the optics out and hardware
and rebuild it. 16" is ok aperture and should be a pleasure to use.



regards,CS