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NGC6888

Petergoodhew

By Petergoodhew
in Imaging - Deep Sky

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Petergoodhew

Petergoodhew

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NGC 6888 The Crescent Nebula in Ha/OIII with RGB stars.

14 hours total integration: RGB at 10x300s each, Ha 26x900s, OIII 20x900s.

I wanted to get good contrast between the inner Ha and OIII outer shell (which is fainter that the Ha) and so tone-mapped before stretching, to enable comparable signal strength between them.

Ha mapped to red. OIII mapped to blue. Green was a blend of 30% Ha and 70% OIII.

And just for fun I did an OIII-only version too.

NGC6888 crop.jpg

NGC6888 OIII solo crop.jpg

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Petergoodhew

Petergoodhew

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On 17/07/2018 at 22:57, Sunshine said:

That is just gorgeous!

Thanks, I'm really pleased with how it came out. 

 

On 17/07/2018 at 22:32, Allinthehead said:

Great detail in that. Nicely seperated from the background too. Nice one.

Thanks, 

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