The Milky Way: September-October
We now begin to look at those constellations which 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, which in theory means you could observe them on any night of the year, although there will be times when they are very low in the sky, and so atmospheric extinction will hinder your view. Let’s begin looking at our collection of autumn Milky Way constellations (see Star Chart 3).
KeywordsOpen Cluster Variable Star Large Aperture Planetary Nebula Bright Star
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- 1.See Appendix 1 for details on astronomical coordinate systems.Google Scholar
- 2.Bright when it is seen in a telescope of aperture 20 cm and greater!Google Scholar
- 3.It always makes me wonder who catalogues these objects and decides when a group of stars is a cluster or just a pleasing arrangement. Surely five stars isn’t a cluster?Google Scholar
- 4.By bright I mean bright as seen in a large telescope!Google Scholar