Well the 16" mirror arrived today all in one piece, many thanks Lester
.
I am still considering some basic design criteria:
Nested design, ie the UTA nests inside the mirror box for storage and transport?
UTA load paths. The "obsession" type UTA's have the struts offset 45 degrees from the truss attachment points. It would seem to me it is preferable to have the struts lined up with the truss attach points. I am planning to use glued timber struts as opposed to bolted aluminium tube and glued 1.8mm ply as opposed to Kydex. On this basis I think I should be able to have straight load paths from the truss attach points through the UTA?? Also due to this more rigid type of construction I might be able to go down one size in plywood thickness with the consiquential weight reduction??
2X80mm boundary layer fans blowing across the face of the mirror. appropriate vents on the opposite side of the mirror box.
UTA ID 450mm OD 530mm and Altitude bearings 600mm diameter (teflon/ebony star).
Thats about as far as I have got to date, any thoughts???
Cheers,