These are mock ups of the high gain antennas from a 1:5 scale model of the support systems module of the Hubble Space Telescope. They were fabricated by the Lockheed Missile and Space Company, the contractor responsible for building the flight spacecraft. The model (Catlogue # 19830233000) depicts the exterior shell of the spacecraft as well as the exterior assemblies required for its operation. The model was donated to NASM by the Lockheed Company in August 1983.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.