Spectral calibration is a key process in optical sciences that involves accurately aligning or calibrating the spectral characteristics of a measurement device such as a spectrometer or camera. This calibration process ensures that the device is accurately capturing and measuring the wavelengths of light in the electromagnetic spectrum. Spectral calibration is essential for a wide range of applications, including remote sensing, astronomy, fluorescence spectroscopy, and colorimetery. Researchers in this area develop and refine calibration methods to improve the accuracy and reliability of spectral measurements.