I have redone the development of this shot. If one applies strong noise reduction, the picture will loose details. If you apply only little noise reduction, you will have more details but the picture will be rather noisy. Thus I tried to develop one version with very strong noise reduction and one version with an amount of noise reduction, such that there are enough details. I saved both versions as TIFFs and made two layers in Photoshop with 50% transparency. Now the details are still there, but the noise seems to be better than before. I am very sure, that this technique can still be improved, but I am happy that I have found this technique. I want to mention, that I have used the Kodak T-Max P3200 preset for the sharp and noisier version and the less contrasty preset Ilford HP5+ for the version with strong noise reduction.