Quote:
Originally Posted by blink138
the baader 7nm ha 2 inch filter is $360
pat
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Strange, TS in Germany (see the link in the OP) sells it for $195.
BTW, I have never tried an Halpha visually but I did a UHC which allows seeing the North America Nebula even with the naked eye (with the filter) and as the NA nebula is Halpha only (i.e. no OIII or Hbeta) an Halpha filter should reveal it as well like other red nebulas (Rosetta, Running Chicken) ?