Over what range of declination will stars be circumpolar (i.e., be visible at any time of the night on any night of the year) for an observer at 30° north latitude?

Question

Quizplus · Accepted Answer

For stars to be circumpolar, their declination must be greater than the observer's latitude. Since the observer is at 30° north latitude, stars with a declination greater than 90° - 30° = 60°N will be circumpolar. Therefore, the range of declination for circumpolar stars is 60° to 90°N.

Over What Range of Declination Will Stars Be Circumpolar (I