Quote:
Originally Posted by Placidus
Again, any hints on how to combine Ha with RGB (concentrating on the maths, not someone's impenetrable proprietary script) is most welcome.
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You may find Ha-(R-med(R))*F helpful, where F can be calculated from the bandwidth of the two filters but usually ends up being tweaked until it looks right
Somewhere between 0.1 and 0.2 usually works for my data.
This is a poor man's continuum filter...
Cheers,
Rick.