1. A method for separating fluorescence spectra of dyes present in a specimen, comprising the steps of: acquiring a spectral scan and thereby ascertaining a mixed fluorescence spectrum of all the dyes present in the specimen; communicating by way of a user, to a computer system associated with a scanning microscope, the dyes present in the specimen, the fluorescence spectra associated with the respective dyes being stored in a database of the computer system; spectrally deconvoluting the acquired mixed fluorescence spectrum; comparing the measured individual spectra ascertained by spectral deconvolution with the fluorescence spectra associated with the respective dyes; and linearly deconvoluting the acquired mixed fluorescence spectrum.