Prime focus reflector
The reflector can be analyzed using the student version of GRASP9 available from TICRA (www.ticra.com) using a Gaussian beam feed antenna.  A step-by-step presentation can be downloaded: single_refl_audio_ppt with an audio track or using GRASP10: single_refl10_audio_ppt with input files: single_refl_GRASP.
rsingle_refl.gif