The base of the telescope is made of prestressed concrete. The telescope has an alt-azimuth mount sitting on 54 steel rollers in a 42 ft (12.8 m) diameter roller track on top of a foundation block.
The telescope's base uses prestressed concrete. Its mount consists of an alt-azimuth system that rests on 54 steel rollers within a 42-foot (12.8-meter) diameter roller track, all positioned atop a foundation block.