Quote:
Originally Posted by N1
Hi Jonathan, not sure if that's the main process at work here - I didn't think the narrow Ha band even touches far IR?
Different story for the calcium K line, whose wavelenght isn't that far from UV and just about outside of what humans can see.
I understand not all single stack scopes perform the same, ie band pass width differs.
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I was meaning to correct that - I meant far red, 656.28nm