ok, thanks guys that is a definite answer rather than conflicting answers i got when having a chat on the #photographers chat-room on Deviant... I just need a clear night now and i'll be out there...

And Zeldie - isnt the main effect more of a "twinkling" look to any light source - ie those 6 radial light trails coming from the source?

"In every colour, there's the light.
In every stone sleeps a crystal.
Remember the Shaman, when he used to say:
Man is the dream of the Dolphin"

Rich Meadows Photography