Abstract: A back frame 60 helps to minimize distortion of a dish assembly 100 by supporting the shape of the dish assembly and supporting the weight of a feed legs assembly 120. The back frame 60 includes a template assembly 61, a center frame 70, and a feed leg mount 90. The template assembly 61 includes dish-engaging leaves 62, 64, 66, and 68 which are double-hinged at an intersection point to provide support for the individual pieces of the dish assembly 100. The center frame 70 includes legs 72, 74, 76, and 78 that are connected in a substantially diamond-shaped configuration. The center frame 70 attaches to the dish-engaging leaves at the comers of the diamond-shaped portion. A cross-connect bar 80 provides an attachment point to the controller assembly. The center frame 70 also includes connection arms 82, 84, 86, and 88 that connect directly to the dish assembly 100.