A trio of open clusters in Cygnus, planetary nebula NGC 7139, and elliptical galaxy NGC 7103
September 15-22, 2011: A trio of open clusters in Cygnus offers small-telescope owners a nice view, while large-telescope owners can seek out planetary nebula NGC 7139 in Cepheus and elliptical galaxy NGC 7103 in Capricornus.
September 15, 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.
This week’s first large-scope object, planetary nebula NGC 7139, lies 2° west-southwest of magnitude 4.3 Kurhah (Xi [ξ] Cephei).
Photo by Astronomy: Roen Kelly
Targets for September 15-22, 2011
Small telescope: A trio of open clusters in Cygnus
Large telescope: Planetary nebula NGC 7139
Large telescope: Elliptical galaxy NGC 7103
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