CXB (formerly Astrodon) 1.25" One Shot Color Luminance Filter (UV / IR Cut)CXB (formerly Astrodon) 1. 25" One Shot Color Luminance Filter (UV IR Cut) Most one shot color cameras do not include blocking filters to prevent "out of band" light from exposing the background of the detector, reducing the over all contrast of your image. CXB's (formerly Astrodon) One Shot Color Luminance UV IR Cut filter blocks wavelengths shorter than 400nm and longer than 750nm and produces a significant increase in contrast and detail in your