This is an interesting new way to do H-alpha with a "normal" scope. An H-alpha eyepiece:
http://www.daystarfilters.com/Quark.shtml
It also needs an energy rejection filter on the front:
http://www.daystarfilters.com/Configurations/Refractors.shtml
1) I wonder why you need different eypieces for chromosphere and prominences. I guess that's a bandwidth issue - prominences need a wider bandwidth but surface detail needs a narrow bandwidth. However, it bumps up the price if you want both. I suppose it's analogous to single stacked vs double stacked.
2) Why does it need power? Maybe for temperature regulation like their ION: http://www.daystarfilters.com/ION/ION.shtml
Mark
:lol: :lol: :lol:
They say it's Cheap - $995 each ain't cheap