Thread: Experimental image M42 in UV.
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Old 04-01-2013, 07:19 PM
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LightningNZ (Cam)
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Or it's H-epsilon, -zeta & -eta? http://en.wikipedia.org/wiki/Balmer_series. But yes, best to check the filter characteristics. You might need to combine it with an IR blocker.

Cheers,
Cam
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