Glowing nebulas amid star clusters in Monoceros, featuring the Rosette Nebula and Christmas Tree Cluster.


The main glowing nebulas amid star clusters in Monoceros, the Unicorn. The main nebula at bottom is the Rosette Nebula, aka NGC 2237-9/45 surrounding the star cluster NGC 2244. Streams of nebulas extend north to connect to a large region of diffuse nebulosity around the Christmas Tree Cluster, NGC 2264, with the main nebula at top catalogued as Sharpless 2-273 and containing a region of bright blue reflection nebulosity. Just below that blue nebula is the dark, conical Cone Nebula. Just below that is the tiny (on this scale) Hubble's Variable Nebula, NGC 2261, a small bright triangular patch. The blue reflection nebula at upper right is IC 2169, surrounded by other smaller patches of reflection nebulosity including NGC 2245 and IC 446. The V-shaped dark nebula at top is LDN 1603. The star cluster just below that is Trumpler 5.


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Photo credit: © Alan Dyer/Stocktrek Images / Alamy / Afripics
License: Royalty Free
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