Use and errors in diode array spectrometry
Author(s): J Schanda
Affiliation(s): University of Pannonia
Topic: 9. Spectroscopy and Scattering Techniques
Spectrometry is an indispensable tool of analysis, optical and colorimetry measurements. Modern CCD array spectrometers are easy to use, but systematic errors might be hidden from the user. On the example of some typical CCD array spectrometer, performance, measuring uncertainty, and possible corrections will be analyzed. In colorimetric measurements stray light, wavelength accuracy, photometric linearity and bandwidth are the crutial parameters. It will be shown how the characteristics of the CCD influence above parameters, especially how the blooming of the CCD can hinder the proper estimation of stray light, what influence the ambient temperature can have on the performance of such instruments.