Quote:
Originally Posted by jase
No, these Lumicon filters have a broad bandpass originally designed for use with TechPan 2145 film. While hypersensitised TP was very sensitive, putting it behind a narrowband Ha filter i.e. 6nm wasn't effective. Hence the reason why they developed a broader bandpass type filter. With the sensitivity of today's cameras, its some what a mute point. You could still use the filter, but it would not offer the contrast of the emission line that you would be seeking.
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Your are a regular font of information as usually Jase .... so thanks for that.
