I tried to make such a great nature phenomenon, and i its apeared godd. I found one else method of this, which prowides much better result, but it tooks too lot of sistem resourses. Final image was improved with Photosho tho improve contrast an add efect of blur.Sorry fo my bad English.
Hi and welcome. I am not an expert on Aurora Borealis but for you first attempt this looks good. From what I have seen from pictures on the internet some may be close to this but others seem to have different colors and are more twisted which would be a difficult effect to make in Bryce but I am sure it could be done.