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I think the rule of thumb is that you need a reasonably dark sky for the UHC to be at its best, and that a more general 'light pollution' filter may be better for suburban skies.
I have used the Lumicon Deep Sky filter in the past and it works well on some objects from suburban skies.
Another version is the Astronomik CLS filter (sold by Bintel) or the Orion SkyGlow (not sure if it's sold in Aust).
Morton
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