In reply to PeterBlackler:
When were you thinking of going?
If you're talking about this Christmas Holiday (you say 'imminent') it's worth mentioning the severe lack of useable daylight means you may as well consider it permanently dark...
I'm a fair bit further north near Lyngen, but was in Bodø 2 days ago and the daylight situation down there wasn't that much better.
On the plus side, the Aurora forecast for 24th, 25th and 26th of Dec is 'moderate', so there's a reasonable chance of seeing them if you're flying soon.
If you haven't booked anything yet, a combined ice climbing and aurora trip would probably be better in a few months time, late Feb to mid March.