M45: Pleiades abandoned

The one-click archive contains what looks like it might be a nice set of CCD images for the Pleiades. However, the entire set seems to be affected by local (i.e., non-astrophysical) scattering, and i struggled to separate this from the (astrophysical) scattered blue light of the Pleiades nebula. Maybe this is part of the reason why there aren't too many attempts at processing this dataset in the Gallery; certainly the more-recent CMOS images appear cleaner. Anyway, at some point you have to give up -- image processing is never finished, only abandoned...