Re: [ATM] trilateral scope problem

["Mel Bartels" <mbartels@bbastrodesigns.com>]

> I'd like to make one addition to Mike's excellent
> points. In my first iteration of the 16" tridob I
> discovered a similar situation as you. The largest
> contributor turned out to be the mirror box wall
> flexing. How stiff is your mirror box front wall?


I concur - why are the top trusses so far apart on the mirror box?    They
cause torsion in the mirror box that translates into rotational sagging at
the focal plane causing a loss of optical alignment.

An easy test: grab the upper ring and twist - the mirror box should pop
right out of the flex rocker.

Mel Bartels


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