A Celestial Atlas is a collection of maps that depict the stars, planets, and other celestial objects in the night sky. These atlases help astronomers and stargazers identify constellations and navigate the heavens. They often include detailed illustrations and descriptions of various celestial phenomena. Historically, celestial atlases have been important tools for navigation and understanding the universe. Notable examples include the works of Johannes Hevelius and Johann Bayer, who contributed significantly to the field in the 17th century. Today, modern celestial atlases are available in both print and digital formats, making them accessible to a wider audience.