Thread: Luminance and Ha.
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Old 18-01-2009, 08:59 PM
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rogerco (Roger)
Roger

rogerco is offline 		 
Join Date: Sep 2007
Location: Woodford,NSW,Australia
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As I understand it Ha is a narrow band filter that lets through just a narrow band of radiation outside of the visual range. As such it is additional to the visual light componant of the luminance.

Regards
Roger
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