R Coronae Australis

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What Wikipedia says

R Coronae Australis (R CrA) is a variable binary system in the constellation Corona Australis. It has varied between magnitudes 10 and 14.36. A small reflection/emission nebula NGC 6729 extends from the star towards SE. It is also the brightest feature of the Coronet Cluster, therefore sometimes called R CrA Cluster.

Excerpt from the Wikipedia article “R Coronae Australis”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: ESO, CC BY 3.0, via Wikimedia Commons.