A series of diffraction patterns produced with the electronic imaging system of the Culgoora radioheliograph is presented. These patterns serve both to illustrate the quality of this type of imaging system and to demonstrate the advantage, in special circumstances, of constructing a radio-frequency simulation of an optical imaging device.
K. V. Sheridan and D. J. McLean, "Use of the Culgoora Radioheliograph for the Generation of Diffraction Patterns," Appl. Opt. 10, 2427-2435 (1971)