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An open star cluster and the Iris Nebula

alan4908

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alan4908

alan4908

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This open star cluster in the constellation Cepheus can best be seen through the triangular shaped region of the Iris Nebula, which is located to the left of the very bright central star in the image below.  The light from this central star is scattered by the surrounding dust giving it a distinctive blue colour. Although it is not designated as an emission nebula, you can also see reddish regions close to the central star which indicate the presence of ionized hydrogen. 

This LRGB image represents about 11 hours integration time and was taken with my Esprit 150 and Trius 814 camera.

Alan

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