Thanks , of course, not thinking clearly because as you say the Ha would cut the O111 and vice versa, Doh.
Quote:
Originally Posted by netwolf
Jeff imho stacking filters would not work . If you put Ha in front of Oii, the Ha nulls out the OIii region then the Oiii behind it will have no effect, same if you reverse. As the individual ones filter out anything but Ha or Oiii , a stack will not work.
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