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M27 ONN RGB hybrid


Earl

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This is a lovely image full of detail. Interestingly I was reading about the Nii filter on Astrodon Forum and the discussion was about the effect of the Nii with the same target, M27. Apparently most of the detail in the core  and the surround comes from the Nii and not Ha. If a narrow enough Ha filter is used there is very little sharp detail evident but apparently since most Ha filters are relatively quite wide they also pick up the very close by Nii signal as well. Now I wonder how much Hb signal is there?

Regards,

A.G

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