Kase 90mm Magnetic Neutral Night Filter for Kase K9 100mm Filter Holder

This 90mm Neutral Night Magnetic Filter from Kase is a light pollution reduction filter specifically designed to fit the Kase K9 holder. It blocks out sky glow without changing the entire color spectrum of the scene. Crafted from optical glass, this is a multi-coated, magnetic, and unthreaded filter that is waterproof and easy to clean.