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Spectral resolution improvement technique for a spectrograph mounting a discrete array detector

Naletto, Giampiero; Pernechele, Claudio; Poletto, Luca +1 more

A new technique has been developed for improving the spectral resolution of spectrographs mounting discrete array detectors. The basic concept is to acquire various spectroscopic images, each one being shifted on the detector by a fraction of the pixel (i.e., the detector resolution element), and to apply suitable numerical procedures in order to …