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Where do I get a Ha filter? All jokes aside, very nice clear image. I would be interested in the difference with no Moon as well. I suspect it would not be far different. If spectral width is a rough indication of lunar light pollution with 7nm/300nm = 2% of full spectrum lunar light pollution.Where 300nm is roughly full spectrum of lunar reflected light.
The Ha filter would be better than 90% transmission for Ha.
What does the image look like if you leave at as red Scott?
Bert
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