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Any good narrow band imaging tutorials?
I'm interested in trying narrow band imaging, but I need a place to start so any beginners tutorials will be extremely helpful. Also the observatory I will be imaging with is offline because the mirrors are getting re-silvered so any raw archives which I can practice with would be extremely helpful. Also I have access to Hydrogen-Alpha, Oxygen-III and Sulfur-II filters, will I need any more?
Thanks,
Luke
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