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.
By | Published: July 12, 2012 | Last updated on May 18, 2023
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

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.

Targets for July 12–19, 2012

Small telescope: Open cluster M18
Large telescope: Globular cluster NGC 6584
Large telescope: Spiral galaxy NGC 6221