A spectroscopic system including a light source adapted to provide a beam of illumination; an optical system adapted to provide the beam of illumination to a sample and receive a spectroscopy signal from the sample and direct the spectroscopy signal to at least one single channel detector is provided. The optical system comprises an adjustable dispersing element for directing one or more spectral features of the spectroscopy signal to the at least one single channel detector. A calibration detector is adapted to determine a set point of the adjustable dispersing element; and a source synchronization component is adapted to synchronize an operation of the light source and the at least one single channel detector. A method of calibrating a dispersing element of a spectrometer is also provided.