Question: What is the state of the art of the deconvolution algorithm in astronomy imaging? As we known, clean was proposed in 1974. So does people still utilize clean now? — Shui
Answer: The CLEAN algorithm is still widely used as the standard. Other methods, such as Bayesian- or wavelet-based deconvolution, also find application for certain deconvolution problems in astronomy. There is a nice review of deconvolution algorithms by Starck, Pantin, and Murtagh which describes many of these methods.