Towards true imaging by wideband speckle interferometry

Taking a sequence of speckle images of an astronomical object, the brightest point in each image is shifted to the centre of image space and all images are superimposed. This process, which has been simulated under severe seeing conditions in a optical laboratory, is found to resolve the true image nearly to the diffraction limit, even when the speckle images are formed in white light. It is suggested that the process is suitable for imaging faint astronomical objects with large optical telescopes. (orig.)