New Moon

This phase occurs when the moon lies between the sun and the Earth. The side facing the sun is sunlit, while the side facing the Earth is not lit by the sun. This alignment leaves the moon dark and invisible to us. Learn more on Wikipedia.

Nautical Twilight

Nautical twilight, both morning and evening, is the time when the center of the sun is between 6° and 12° below the horizon (-6º,-12º). In general, nautical twilight ends when navigation via the horizon at sea is no longer possible. Learn more on Wikipedia.

Northern Hemisphere

The half of the Earth that is north of the equator. Learn more on Wikipedia.

Number of Photos (Time lapse)

Number of photos we need to take during the event to create a time-lapse video.