Open cluster M18, globular cluster NGC 6584, and spiral galaxy NGC 6221
July 12–19, 2012: Open cluster M18 in Sagittarius offers
small-telescope owners nice views, while large-telescope owners can seek
out globular cluster NGC 6584 in Telescopium and spiral galaxy NGC 6221 in Ara.
July 12, 2012
Each week, Astronomy magazine Senior Editor Michael E. Bakich, a
master at explaining how to observe, posts a podcast about three or more
objects or events you can see in the sky.
NGC 6221 lies only 25' east-southeast of magnitude 3.8 Eta (η) Arae, so when you view the spiral, be sure to move the bright star out of the field of view. Astronomy: Roen Kelly
Targets for July 12–19, 2012
Small telescope: Open cluster M18
Large telescope: Globular cluster NGC 6584
Large telescope: Spiral galaxy NGC 6221
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