Celestial hemisphere:  Northern  ·  Constellation: Delphinus (Del)  ·  Contains:  Blue Flash Nebula  ·  NGC 6905  ·  PK061-09.1
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NGC 6905 - Blue Flash Nebula, Michael J. Mangieri
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NGC 6905 - Blue Flash Nebula

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NGC 6905 - Blue Flash Nebula, Michael J. Mangieri
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NGC 6905 - Blue Flash Nebula

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Description

NGC 6905, also known as the Blue Flash Nebula, is a planetary nebula in the constellation Delphinus. It was discovered by William Herschel in 1784. The central star is 14.0 mag. The distance of the nebula is estimated to be about 5,500 light years away. 

There was considerable Ha and Oiii signal in this object and I may have over-exposed the NB a little bit.  Based on the bloat of the stars it would suggest that the sky conditions were not all that great when this was imaged. I cropped the individual subs quite a bit prior to any post-processing.

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NGC 6905 - Blue Flash Nebula, Michael J. Mangieri