Open cluster NGC 7686, emission nebula NGC 7538, and barred spiral galaxy NGC 7640
October 6–13, 2011: Open cluster NGC 7686 in Andromeda offers small-telescope owners a nice view, while large-telescope owners can seek out emission nebula NGC 7538 in Cepheus and barred spiral galaxy NGC 7640 in Andromeda.
October 6, 2011
Each week, Astronomy magazine Senior Editor Michael E. Bakich, a master at explaining how to observe, posts a podcast about three objects or events you can see in the sky.
Emission nebula NGC 7538 lies 5° northwest of magnitude 4.9 Tau (τ) Cassiopeiae. This object is part of a vast array of nebulosity known as the Cassiopeia complex.
Photo by Astronomy: Roen Kelly
Targets for October 6–13, 2011
Small telescope: Open cluster NGC 7686
Large telescope: Emission nebula NGC 7538
Large telescope: Barred spiral galaxy NGC 7640
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