B-band

The B-band refers to a specific range of blue light wavelengths used in astronomy to observe stars and other celestial objects. It’s part of the Johnson photometric system, which measures the brightness of objects across different colors. The B-band specifically captures light with wavelengths around 440 nanometers, helping astronomers analyze the temperature, composition, and properties of stars. By comparing how bright an object appears in the B-band to other bands, scientists can learn about its characteristics and behavior in the universe.