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Sh2-129 in Cepheus

 

Sh2-129

 

This Sharpless object is an extremely faint emission nebula which is located about 4 degrees west of the better-known large nebula IC 1396 in the constellation Cepheus. It has an interesting shape and surrounds a loose association of (slightly brighter) stars which are located slightly above the image's center. This asterism is probably connected to the nebula and provides the UV light which excites the hydrogen in the nebula and causes it to emit light.

Cepheus, standard lens photograph.
Sh2-129 in Cepheus in Hα, which is part of this image.


Exposure Data


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© 2013 Walter Koprolin