Which specific filters help improve the view of NGC 2392 in light-polluted skies?

Answer

UHC or OIII filters

UHC (Ultra High Contrast) and OIII (Oxygen-III) filters are highly effective for planetary nebulae. They function by darkening the background sky and filtering out starlight while specifically permitting the light emitted by the ionized gas of the nebula to pass through. This enhances the contrast, which is essential for viewing the nebula in less-than-ideal or light-polluted observing conditions.

Which specific filters help improve the view of NGC 2392 in light-polluted skies?
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