ADAPTATION OF AN ECHELLE SPECTROGRAPH TO A LARGE CCD DETECTOR

A broad range echelle spectrograph with a CCD matrix detector is devel oped for different applications in atomic spectroscopy. The compact op tical design in combination with a dispersive entrance slit illuminati on offers a low stray light level and high throughput in the UV spectr al region comparable only with spectrographs of higher focal length. R ay tracing calculations for typical wavelengths and the multi-line spe ctrum of an iron are show the excellent overall spectrum quality. The subtraction of two partial spectra of different steel alloys demonstra tes the spectra evaluation possibilities of the CCD spectrograph.