Naoshi BABA, Hiroyuki TOMITA and Noriaki MIURA

Department of Applied Physics, Faculty of Engineering, Hokkaido University, Sapporo, 060 Japan

(Accepted September 9, 1994)

A method of phase diversity imaging is applied to reconstruct an overly extended object from stellar speckle images. The reconstruction algorithm is based on the iterative blind deconvolution method and the Gerchberg-Saxon phase retrieval procedure. Computer simulations for reconstructing solar granulations are conducted. The simulation results exhibit the effectiveness of the phase diversity method for high-resolution solar imaging.

Key words : phase diversity, stellar speckle interferometry, high-resolution imaging, phase retrieval, blind deconvolution, image reconstruction, astronomy