sony camera in night shot mode, which still captures some color...played around with the levels to get the colors in black in white, not grey scaling it....then in the hue/sat in green turned the saturation all the way down, then in the master hue i increased it to my liking of what i wanted the sky to look like without changing the other whites, and saturation up to about 25 to 35 again to my liking, the lightened it a little tiny bit, and then auto leveled it... then tweaked the curves a little. thanks