... Moscow variant. Strong light pollution of the city causes bright sky at long exposured shots. For this picture i use 67 RAW shots, aligned with Hugin's "align_image_stack" utility and averaged. This allows to get Orion nebula's natural color, but it's size and details still unacceptable. Next time i'll try capturing this nebula with better camera settings and bigger series of source shots. Star colors looks better in original resolution: 1567 x 2093 pixels.
I wrote small post about averaging stack of shots here: english / russian.