The Baader AstroSolar® ClearWhite Safety Film OD 5.1 is a high-quality, double-sided metallized solar filter film designed for direct observation of the sun as well as for constructing front-mounted objective filters on telescopes, binoculars, spotting scopes, and camera lenses. The film has an optical density of OD 5.1 and reduces the intensity of sunlight by approximately 99.9992%, or by a factor of about 125,000. It meets the applicable transmission requirements of EN ISO 12312-2:2015 for filters intended for direct solar observation. Compared to the previous AstroSolar® Safety Film OD 5.0, the new ClearWhite version offers an even clearer, whiter solar image and a slightly higher optical density. Sunspots, granulation, and fine structures of the photosphere become sharply and contrastively visible with suitable optics.