The StarScape filter selectively absorbs specific wavelengths of strong light emitted by artificial urban light sources, which are the main cause of light pollution, while allowing the wavelengths from celestial bodies to pass through.
To illustrate its color accuracy, Prime Plasma Sputtering C-P.L can be represented using an RGB chart, which depicts the balance of the three primary colors of light: Red, Green, and Blue, based on ISO 6728:1983 "Photography Camera lenses Determination of ISO color contribution index (ISO/CCI) "