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Imaging spectroscopy is intended to be coupled with adaptive optics (AO) onlarge solar telescopes, in order to produce high spatial and temporalresolution measurements of velocities and magnetic fields on a 2D target. Wepresent the theoretical capabilities of a new generation 24-channel MSDP slicerfor 8-meter class spectrographs which are common in solar astronomy. The aim isto produce 24-channel spectra-images providing cubes of instantaneous data (x,y, $\lambda$) allowing the study of the plasma dynamics and magnetic fields. Weinvestigate the possibility of doubling the spectral resolution using twointerlaced spectra-images, delivering together 48 channels. Two polarimetricmethods are also explored providing simultaneous measurements of Stokescombinations with a dual beam; one of them could provide 48 sub-channels (or 96with wavelength interlaced observations).

Capabilities of a 24 -channel slicer for imaging spectroscopy with the  Multichannel Subtractive Double Pass (MSDP) on 8-meter class solar  spectrographs