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Old 18-01-2009, 07:10 PM
TheDecepticon
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Luminance and Ha.

Howdy.
If I was going to try to enhance images with Ha data, do I still need a Luminance shot, or is it a bit of a time waste as Ha will "cover" this area?
Thanks.
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Old 18-01-2009, 08:59 PM
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rogerco (Roger)
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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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Old 18-01-2009, 09:25 PM
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uh the black art.... There are different schools of thought. My understanding is yes. The Ha data is for fine detail and the Lu is to map the areas of colour and the colour is for the colour :-). I was going to post a new thread tonight to see if there were any good websites and books that talk about these new imaging techs/methods in detail. I'm having enough trouble with LRGB!!

Last edited by KenGee; 18-01-2009 at 11:54 PM.
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