Infrared cluster

The Quintuplet Cluster, seen here by the Hubble Space Telescope, is an infrared cluster located near the galactic center.

An infrared cluster is a type of star cluster only visible in infrared light. Prominent examples include the Quintuplet Cluster, Arches Cluster and central star cluster of RCW 38. Other nebulae that contain infrared clusters include Sh 2-4, Sh 2-16, Sh 2-17, and Sh 2-20.

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