NiSi Natural 100X100mm Night Filter Astrophotography

The NiSi 100x100mm Natural Night Filter addresses one of the biggest challenges astrophotographers face: light pollution. By selectively blocking the wavelengths of light most commonly emitted by sodium vapor and mercury vapor street lamps, this filter allows cameras to capture the night sky with improved color accuracy and contrast. Stars, nebulae, and the Milky Way appear more vivid and distinct, reducing the amount of corrective post-processing needed to achieve clean results.

Constructed from high-quality optical glass, the filter maintains edge-to-edge sharpness without introducing distortion or softness. NiSi's proprietary NANO Coating serves double duty — it minimizes reflections and ghosting that can plague night exposures, while also repelling moisture and fingerprints that are common nuisances during late-night shooting sessions. The 100x100mm square format integrates with widely used filter holder systems, giving photographers the flexibility to combine it with graduated ND or other creative filters. For anyone regularly shooting under suburban or urban skies, this filter is a practical addition to the kit.