Paul
I think this is the Vixen Truss you are refering to.
http://www.iceinspace.com.au/forum/s...ht=vixen+truss
Also these 12.5" RC truss scopes using StarInstruments optics.
http://www.iceinspace.com.au/forum/s...ad.php?t=39552
All are just fantastic works of Art.