Sorry to be so much a first degree guy (sun for "hot", book for "literacy")..., but it's too bad to leave this topic drying.
So I looked into the house, around me (only one day left, no?) and saw this so old dictionary, still used though, at least to teach children you can still do some things without batteries and connections.
Our dictionary. +30 years old.
Raw Fcam on N900 + kind of on a tripod, low light, high Iso, long pause.
Darktble to adjust blacks, exposure, white balance, hot pixels removal.

This is the discovery of the day: Darktable hot pixels removal: when you have to use high ISO, you get a lot of bright red and green pixels in dark areas. This filter (hot pixels removal) removes them (!) very easily. Big difference.



All the best,