I am planning on attempting to photograph the Northern Lights here in Nfld Canada tonight with a tripod; lense is a Nikkor 50mm AF f/1.8D; not the best wide angle but will give it a try regardless & will use the built in timer. My question(s) are what settings should I start out with for the first test shots. My plan is to setup at the remote site before dark. Any help is appreciated, thanks.