Celestial hemisphere:  Southern  ·  Constellation: Ara (Ara)
Westerlund 1 - Amazing Super Star Cluster, Jorge stockler de moraes
Westerlund 1 - Amazing Super Star Cluster
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Westerlund 1 - Amazing Super Star Cluster

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ISO 800.

Not usual cluster, with large amount of rare massive and evolved stars: 6 yellow hyper-giant, 4 red super-giant, 24 Wolf-Rayet

The strong Interestelar Extintion, absorption caused by gas and dust between the observer and object, cause distortions of stars' colors, with a reddish appearance. In my photo the stars are very red !

The cluster has many intriguing issues because of stars' size. It worth read about it ! Really, it does !

note: there is a similar, Westerlund 2, in constellation of Carina. I din't know up to now, but I already shot it, too: Westerlund 2 and NGC 3247

Best view in full resolution mode.

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Westerlund 1 - Amazing Super Star Cluster, Jorge stockler de moraes