Celestial hemisphere:  Northern  ·  Constellation: Vulpecula (Vul)  ·  Contains:  Dumbbell nebula  ·  M 27  ·  NGC 6853  ·  The star 14Vul
M27 The Dumbbell Nebula , Subaru6
M27 The Dumbbell Nebula
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M27 The Dumbbell Nebula

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Description

Taken in Japan during a hot summers night with a new moon. M27 is a planetary nebula 1360 light years away, in the constellation of Vulpecula with an apparent magnitude of 7.5.

This dying star has ejected a shell of hot gas into space for about the last 48,000 years. The star responsible is an extremely hot blueish subdwarf dwarf – which emits primarily highly energetic radiation of the non-visible part of the electro-magnetic spectrum, which is absorbed by exciting the nebula’s gas, and re-emitted by the nebula. What’s that spell? Try the forbidden zone of doubly ionized oxygen… one spectral line only, in the green light at 5007 Angstroms! That’s why Messier 27 glows like a green apple core.

Ref: http://www.universetoday.com/33035/messier-27/

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    M27 The Dumbbell Nebula , Subaru6
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M27 The Dumbbell Nebula , Subaru6