AtmosFear is a mod for S.T.A.L.K.E.R. - Call Of Pripyat that tweaks and expands the vanilla weather system to be more realistic and various.
Another 'long exposure' image (that's why it is so bright). Note the Perseid meteorites trails. NB. screenshot taken with the brightest nights setting.
This picture must have been taken in late August... looks awesome!
CrommCruac your sky textures is greate