Old 04-10-2018, 05:30 AM
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speach (Simon)
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light pollution filter

In the imaging chain of a B&W cmos camera would a light pollution filter be a better option than the luminescence filter?
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Old 04-10-2018, 06:14 AM
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Slawomir (Suavi)
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That depends on the source(s) of light pollution, but the best way to know for your location would be taking a few alternate exposures with a Lum filter and a light pollution filter and see which one has the highest SNR. If light pollution is heavy though, then I would drop the idea of using LRGB filters altogether and do narrowband only (that's what I used to do when I lived in Sydney and Brisbane).
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Old 04-10-2018, 10:47 AM
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I used to use LP filters (tried them ALL, including the VERY expensive one from Cyclops). I got FAR better results by using no filter and letting PixInsight deal with it instead. The results are QUITE noticeable. I still do OSC, and also now mono LRGB-Ha.

MY LP issue has been stated a buzzillion times - it is horrendous.
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Old 04-10-2018, 05:47 PM
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cometcatcher (Kevin)
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It will probably help for nebula but nothing else. Especially broadband stuff like galaxies.
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Old 04-10-2018, 07:42 PM
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astronobob (Bob)
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I am under the impression that the LP Filter would reduce the LP much more than the 'L' filter,,,
Have a read through my recent thread : Does LRGB Imaging cut through Light Pollution
Hope helps ?
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