Technique
Deconvolution
Mathematical sharpening using PSF modeling
Definition
Deconvolution attempts to reverse the blurring caused by the telescope's optics and atmosphere by modeling the Point Spread Function (PSF). Unlike simple sharpening, deconvolution is mathematically principled and can recover real detail. Common algorithms include Richardson-Lucy and Wiener deconvolution. Best applied to linear (unstretched) data.
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