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Old 03-11-2011, 04:56 PM
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Geoff45 (Geoff)
PI rules

Geoff45 is offline
 
Join Date: Jul 2006
Location: Sydney
Posts: 2,631
Seems reasonable. I didn't really believe it could be that simple.
Geoff

Quote:
Originally Posted by frolinmod View Post
You'd need a sub-angstrom Ha filter. Your typical CCD imaging narrow band Ha filter is 30 to 50 angstroms (3nm to 5nm) wide. That is far too wide to see prominences.
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