Sky Map Locations Sky maps are used to located stars and other objects in the sky just like a world map is used to locate countries, states and cities. There are many types of sky maps just as there is may types of land maps.
Sky maps cover various amounts of the sky.
One of the most useful sky map is a sky map that shows the entire sky that can be seen at once. This assumes you have unobstructed veiwing horizons. These sky maps are implemented as circle sky maps with the horizon at the edges of the circle sky map and the point directly overhead is located at center of the circle sky map. The point directly over head is called the zenith. A world map is used to learn the locations of countries and major cities of interst.