I did Orbitron 10' starting pre-1990 and 8.5' post-1991. Liked their design concept, clean looking. Also very compact in pre-assembled form. Based in Spring Green, Wis. and said to be designed by protege of FLW. Ribs were slid onto tabs on a central assembly plate, perimeter sections were bolted to ends of ribs and spliced to each other, and then the ribs were compressed between 2 center plates to form the structure. Something like 18 bare mesh panels were then placed between each of the ribs and secured with a locking strip. This was when almost all else was the 4-section stuff. Downside was that with enough force panels could be pushed out. Also they had a .3 f/d and rejected TI better.
The mount was equally unique with its "spin" declination setting. "Spinclination". How are there any of these still around?