  The Meudon Solar Tower (MST) is a 0.60 m telescope dedicated to spectroscopic
observations of solar regions. It includes a 14-meter focal length spectrograph
which offers high spectral resolution. The spectrograph works either in
classical thin slit mode (R > 300000) or 2D imaging spectroscopy (60000 < R <
180000). This specific mode is able to provide high temporal resolution
measurements (1 min) of velocities and magnetic fields upon a 2D field of view,
using the Multichannel Subtractive Double Pass (MSDP) system. The purpose of
this paper is to describe the capabilities of the MSDP at MST with available
slicers for broad and thin lines. The goal is to produce multichannel
spectra-images, from which cubes of instantaneous data (x, y, $\lambda$) are
derived, in order to study of the plasma dynamics and magnetic fields (with
polarimetry).
