Auroras are good at anytime but i prefer a bit of moonlight to light up the foreground, and you can use a lower ISO so less noise 
these were taken down at Sandsayre under a strong aurora
more at Shetland Aurora Hunter on Facebook
Final managed to get out after a week of snow ice and gales, a clearish night and an aurora
It started early with an Orange alert by 5.30pm . These i manage to catch at about 6.15-7.15pm down at sandsayre