The Urth 39mm Magnetic Night Filter Plus+ is a specialized optical filter for photographers seeking enhanced performance in low light and reduced light pollution in their images. With a precise thread diameter of 39 mm, this filter magnetically attaches to compatible lenses, allowing for quick attachment and removal without traditional screw mechanisms. Utilizing multi-layer nanocoating technology, it effectively blocks artificial light wavelengths while allowing natural starlight to pass through, resulting in clearer night sky shots with reduced orange glow from urban areas. The filter maintains color accuracy and minimizes vignetting, making it suitable for astrophotography, night scenes in urban landscapes, and twilight landscape photography. Its robust aluminum housing provides lightweight protection, and the magnetic mounting system ensures secure attachment without damaging the lens threads. The optical glass is treated with scratch-resistant coatings and features anti-static properties for dust repulsion. Compatible with various camera systems when using appropriate step-up or step-down rings, this filter offers a practical solution for photographers working under challenging lighting conditions where traditional filters may compromise image quality.