The starry night filter cuts down on artificial lights, particularly Sodium and Mercury vapour lights, while still allowing the light from the Nebula to be captured in all its glory. Some artificial light, particularly Xenon car headlamps, cannot be filtered out.
Size: thread to fit 77mm lenses.
Athabasca ARK II 100mm Square Polarizer
Material: German Schott optical glass& Polarizing film from Japan
Size: 100mm x 100mm
Installation Method: plus-in filter
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