The NASA star finder charts are constructed based on the visible sky at 34 N latitude,

which is roughly the latitude of Los Angeles, California. These charts are designed to help astronomers and stargazers locate and identify stars, constellations, and other celestial objects in the night sky. The charts take into account the specific star patterns and positions visible from this latitude, as well as the time of year and time of night. The NASA star finder charts can be used with the naked eye or with telescopes and are a valuable tool for amateur astronomers and anyone interested in exploring and observing the wonders of the night sky.