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Open cluster M25, open cluster IC 4665, and spiral galaxy NGC 6503

Open cluster M25, open cluster IC 4665, and spiral galaxy NGC 6503

August 28–September 4, 2014: Open cluster M25 in Sagittarius is an excellent target for naked-eye and binocular observers, the Black Swallowtail Butterfly (IC 4665) in Ophiuchus offers small-telescope owners stunning views, and large-telescope owners can seek out the Lost in Space Galaxy (NGC 6503) in Draco.

By Michael E. Bakich | Published: Thursday, August 28, 2014

RELATED TOPICS: OPEN CLUSTERS | GALAXIES

This week's naked-eye object, open cluster M25, lies 4.4° east-northeast of magnitude 3.8 Mu (μ) Sagittarii.

Astronomy: Roen Kelly

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.

Targets for August 28–September 4, 2014
Naked eye and Binoculars: Open cluster M25
Small telescope: The Black Swallowtail Butterfly Cluster (IC 4665)
Large telescope: The Lost in Space Galaxy (NGC 6503)