after. Most constellations are also seasonal, meaning that ones that are visible in winter may not be visible in summer and vice-versa, so sky charts usually come in seasonal versions. Constellations may also be drawn slightly differently on each chart and it’s also worth noting that there are separate charts for the Northern and Southern hemispheres. Circumpolar Constellations Circumpolar constellations are constellations that never set below the horizon when seen from a particular location on Earth. They can be seen in the night sky throughout the year, while other constellations are seasonal, visible only at certain times of year. The term circumpolar refers to constellations and stars that are circling the north and south celestial poles without ever dipping below the horizon. All circumpolar constellations are found near the celestial poles and, due to their proximity to the poles, they never disappear from view. The five northern constellations visible from most locations of the equator throughout the year are , , , , and . Mapping Celestial Objects: The Celestial Sphere Earth Maps: Cartographers (mapmakers) and Geographers use Latitude and Longitude to designate locations on maps. Latitude lines (parallels) divide the globe into the Northern and Southern Hemispheres Latitude lines are drawn from East to West (0 - 90 N, S) Longitude lines (meridians) divide the globe into the Eastern and Western Hemispheres Longitude lines are drawn from North to South (0 - 180) Latitude and Longitude Lines are drawn on MAPS. Lines of Latitude and Longitude are measured in Degrees, Minutes, and Seconds) Celestial Maps: Astronomers use Declination and Right Ascension to designate locations on the Celestial Sphere. Declination corresponds to Lines of Latitude
after. Most constellations are also seasonal, meaning that ones that are visible in winter may not be visible in summer and vice-versa, so sky charts usually come in seasonal versions. Constellations may also be drawn slightly differently on each chart and it’s also worth noting that there are separate charts for the Northern and Southern hemispheres. Circumpolar Constellations Circumpolar constellations are constellations that never set below the horizon when seen from a particular location on Earth. They can be seen in the night sky throughout the year, while other constellations are seasonal, visible only at certain times of year. The term circumpolar refers to constellations and stars that are circling the north and south celestial poles without ever dipping below the horizon. All circumpolar constellations are found near the celestial poles and, due to their proximity to the poles, they never disappear from view. The five northern constellations visible from most locations of the equator throughout the year are , , , , and . Mapping Celestial Objects: The Celestial Sphere Earth Maps: Cartographers (mapmakers) and Geographers use Latitude and Longitude to designate locations on maps. Latitude lines (parallels) divide the globe into the Northern and Southern Hemispheres Latitude lines are drawn from East to West (0 - 90 N, S) Longitude lines (meridians) divide the globe into the Eastern and Western Hemispheres Longitude lines are drawn from North to South (0 - 180) Latitude and Longitude Lines are drawn on MAPS. Lines of Latitude and Longitude are measured in Degrees, Minutes, and Seconds) Celestial Maps: Astronomers use Declination and Right Ascension to designate locations on the Celestial Sphere. Declination corresponds to Lines of Latitude