Abstract: A particle spectrometer, operable to produce an image of a particle from an emitting or transmitting surface comprising emitting or transmitting means for said particles; means for limiting said particles according to predetermined criteria; an electromagnetic imaging analyser; selection means for selecting said particles for transmission into said spectrometer, said selection dependent on the electrostatic charge or magnetic moment of said particles, wherein said analyser includes at least two pairs of object and image planes, and wherein a first pair of said at least two pairs of object and image planes relate to a detector, which images particle distributions according to analysis criteria, a second pair of said at least two pairs of object and image planes relates to energy selection, said electromagnetic imaging analyser capable of producing at least one image of said surface, wherein each image is tuned to a selected energy range and wherein any plurality of such images are produced simultaneously.