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Hi Rolf,
what I do is similar, place the objects on a flat, and place a tube underneath the flat.
just move the tube to the rough centre point and it shouldn't lean or stay down on either side, like a see saw. gives me a rough idea.
Since I'm using sliding counterweights, I will have some tolerance.
Now to get the segments designed.
I'd ideally like to use a single secondary ring rather than two like Doomsayers RC as that would save a lot of weight.
might also end up with the conical spiders as in some RC's.
challenge would be to ensure the focuser plane stays rigid and parallel to the optical axis with no flexure. I could do that by extending the lateral width of the ring.
if it doesn't work, then i'll have to go with two rings.
Also wanted to use the collapsible connected trusses like the ultralight obsession Dobs as that'd make assembly very easy.
just options at this stage, will have to work out what's practically feasible and efficient.
will post some cad drawings once I'm back from snake valley.
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