Try this shot next time with a film that has better red response. Many of Orion's treasures glow in the Hydrogen alpha wavelength (656nm if I'm not mistaken). Kodak Ektachrome E200 and Fuji Provia 400 are two films that seem to be the best for this sort of work. They happen to be slide films, all the good negative films have been discontinued. The Orion Nebula should appear pinkish, and the Flame and Horsehead nebulae did not appear; they would be to the left of the left most star of the belt. Also, if you are shooting from a dark site, try a longer exposure if you are careful with polar aligning your mount. The attached photo shows what color you can get with a decent film. This was the old Supra 400 and a 200mm lens on a Minolta body. The new formulation has lost the red response.
Great capture, well visibile all the constellation and the "belt". Lavoro molto ben fatto, tipicamente uno di quelli che merita e che in thumbnail purtroppo appare nero nero e non attira... Ciao ! Cris.-
0 
