The Milky Way: September – October
We now begin to look at those constellations that ride high in the sky for northern observers, but may be rather low, or even unobservable, for southern observers. In fact, several of the constellations are circumpolar for northern observers, meaning you could observe them on any night of the year, in theory. Of course, there will be times when they are very low in the sky, and so atmospheric extinction will hinder your view, but this means that you can observe parts of the Milky Way on any clear night of the entire year. Let’s begin looking at our collection of autumn Milky Way constellations (see Complete Star Chart 3.1).