a, An axi-symmetric binary phase filter (BPF) and image reconstruction network are jointly learned through the physics-informed neural network. The learned BPF is fabricated and inserted in a pupil ...

A series of short-exposure images are often used for rich, small-scale structure, high-quality, and high-resolution astronomical observations. Postprocessing of the closed-loop adaptive optics (AO) ...

A technique has been developed for directly transforming interferometer fringe visibility functions ("S curves") from the Hubble Space Telescope (HST) fine guidance sensors (FGSs) into intensity ...