Celestial hemisphere:  Northern  ·  Constellation: Lyra (Lyr)  ·  Contains:  IC 1296  ·  M 57  ·  NGC 6720  ·  Ring nebula in Lyra
M57 Ring Nebula, Ross Walker
M57 Ring Nebula
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M57 Ring Nebula

M57 Ring Nebula, Ross Walker
M57 Ring Nebula
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M57 Ring Nebula

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Description

Ring Nebula in HSO narrowband, imaged April to June 2019.

My third attempt at processing, and it was a struggle as usual. I assumed narrowband was easier to process than LRGB galaxies but not so, in this case at least. No matter what I tried I could not obtain any colour and detail in the centre. The noob mistake was, I was over-stretching the image, and once that was amended I was able to pull out some texture and colour. Not before losing star colour though. I guess I can enhance star colour via RGB later.

The Ha master shows the second (outer) shell, but quite faintly. I tried to enhance it a little using a mask and that worked to some extent but it does need many more hours of Ha to pull it to the front.

Around nineteen hours of narrowband, but at a pixel scale of 0.28 arc-sec it needs a lot more, and a skilled processor, to do it justice.

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M57 Ring Nebula, Ross Walker