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The Cometary Globule DCld 343.0+2.8 - "The dark tower"

Object description:

The cometary globule DCld 343.0 + 2.8 in the constellation Scorpion is better known as the "Dark Tower". It is located in the western part of the Gum 55 emission nebula. The head of the globule is pointing towards the open star cluster NGC 6231, which is located just outside of the image at the lower left side. The cluster is the center of the Scorpius OB1 association with its numerous young and hot stars which ionize the outer part of the molecular cloud and produce the red emission nebula. In addition to the emission nebula there are five small reflection nebulae visible in the globule. The distance to the glubule is around 5300 light years.

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