4/8 Almost exactly in the zenith is the star [delta] Aurigae. They not only serve to indicate the configuration of certain important star-groups, but they illustrate the construction of maps, such as the observer should make for himself when he wishes to obtain an accurate knowledge of particular regions of the sky. They are all made to one scale, and on the conical projection--the simplest and best of all projections for maps of this sort. |