Gum catalog

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Arts and letters

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What Wikipedia says

The Gum catalog is an astronomical catalog of 84 emission nebulae in the southern sky. It was made by the Australian astronomer Colin Stanley Gum (1924–1960) at Mount Stromlo Observatory using wide field photography.

Excerpt from the Wikipedia article “Gum catalog”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: ESO, CC BY 4.0, via Wikimedia Commons.