But there is one with a good deal of legitimacy - the Richardson-Lucy deconvolution algorithm - a software method of enhancing images that was developed to correct the Hubble telescope's originally flawed optics.
Here is a flashing comparison of an image taken last night before and after applying the algorithm (using ImagesPlus v3.82) -
Here is a still of the finished product:
Note that this is also the product of a nearly 2 year effort to image at close to 1 arc-second/pixel resolution (versus previous 1.4 as/p).
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