Can auroras ever be seen clearly with calm winds and inactive sun?
If you mean “winds” on earth, they have nothing to do with the aurora. If you mean “solar winds”, then the aurora is seen only in the polar cap. There is always aurora. When the sun is active, the solar wind is stronger and the aurora occurs more often at lower latitudes. When the sun is inactive, and the solar wind calm, the aurora occurs at high latitudes.
