Convert a scope to H-alpha solar

[MarkS]

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

[mickw]

 

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