Almucantar

An almucantar is a circular line in the sky that connects points at the same altitude above the horizon. Imagine drawing a horizontal circle around the sky at a specific height, such as where the Sun or stars appear at a certain elevation. These circles help astronomers and navigators describe the position of celestial objects relative to the observer's horizon. The term is often used in celestial navigation and astronomy to specify the height of objects in the sky at a given time.