UFRaw

I've been using UFRaw, a GIMP plugin to work with the RAW shot of the moon. The images was quite under-exposed to start with, but still it gives me very many colours in the sky:

It uses dcraw that I talked about earlier. Do you have any experience with dcraw or utillities based on it you'd like to share? I'll spend some time learning this tool so that I can get better results than this redish sky.