NGC7023 - The Iris Nebula (Adrenaline)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD200099 · HD200775 · Iris Nebula · LBN 475 · LBN 487 · LDN 1168 · LDN 1170 · LDN 1172 · LDN 1173 · LDN 1174 · NGC 7023

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NGC7023 - The Iris Nebula

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NGC7023 - The Iris Nebula

With the best of nebula season over - although best does not seem quite the right word - it is that time of year when opportunities start to present themselves in Cepheus.

The Iris is an obvious target as it passes above 30 degrees elevation just as astro darkness starts.

The blue glow of the nebula comes from a hot, massive star at the centre of the nebula, HD 200775. Blue light from the star is scattered off dust grains in the nebula, giving it its distinctive colour.

So far I have only managed to obtain about six hours of data but I am hoping there will be a few more clear nights between now and the loss of astro darkness when I can add more data and better reveal the dust clouds surrounding this little gem.

Thanks for looking.

Adrian

Original
B
Final
C

B

Description: A slightly toned-down version - I got a bit carried away with the Blue curve - hopefully this looks a little more natural - whatever natural might be!

Uploaded: ...

C

Description: Reprocessed with additional data; 150 minutes on each of R, G and B and an additional 90 minutes of Lum.
I think the additional subs have helped to reveal more of the surrounding dust and at the same time to help reveal more structure and detail in the centre region of the Iris. The law of diminishing returns is starting to apply so not sure it is worth investing more time in collecting more data.

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	9677622
PixInsight job	3CP8SNN3JX8G1GQQ2RVRZTFQCM0A1MQX
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h02m12s.14
RA (top/left)	21h09m45s.37
RA (top/right)	21h09m17s.38
RA (bottom/right)	20h54m04s.29
RA (bottom/left)	20h55m40s.20

Dec (center)	+68°11′33″.3
Dec (top/left)	+67°19′36″.4
Dec (top/right)	+69°06′41″.1
Dec (bottom/right)	+69°02′06″.3
Dec (bottom/left)	+67°15′25″.0

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NGC7023 - The Iris Nebula

NGC7023 - The Iris Nebula

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NGC7023 - The Iris Nebula

NGC7023 - The Iris Nebula

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