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It's certainly an impressive expanse.
Why is the monatomic hydrogen in this long exposure showing up in the green part of the spectrum. Normally hydrogen is seen towards the red end of the spectrum - Hydrogen Alpha line. If this area of hydrogen were so faint, why would it now preferentially show up as green, rather than red?
I had a look at the original 15Mb images he posted. There is some red haziness around the LMC & SMC which I thought would be the hydrogen?
Could the green be an artefact from the HDR process?
DT
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