A lot of work has gone into that one Stephen and from the test shots it looks like it's coming along nicely with a pretty flat field.
Stars are a little eggy on the right of the last image but some fine tuning to come will no doubt fix that.
Did you consider using carbon truss tubes rather than the metal ones for stability? I guess cost has to come into it all somewhere though.
I like the idea of the truss they look the business, cant wait to see some images off the final setup.
