  Multi-Application Solar Telescope (MAST) is a 50 cm off-axis Gregorian
telescope and started operational recently at Udaipur Solar Observatory (USO).
For understanding the evolution and dynamics of solar magnetic and velocity
fields, an imaging spectropolarimeter is being developed as one of the back-end
instruments of MAST. This system consists of a narrow-band filter and a
polarimeter. Polarimeter includes a linear polarizer and two sets of Liquid
Crystal Variable Retarders (LCVRs). The instrument is intended for the
simultaneous observations in the spectral lines 617.3 nm and 854.2 nm, which
are formed in photosphere and chromosphere, respectively. In this paper, we
present results from the characterization of the LCVRs for the spectral lines
of interest and response matrix of the polarimeter. We also present preliminary
observations of an active region obtained using the spectropolarimeter. For
verification, we compare the Stokes observations of the active region obtained
from Helioseismic Magnetic Imager (HMI) onboard Solar Dynamics Observatory
(SDO) with that of MAST observations in the spectral line 617.3 nm. We found
good agreement between both the observations, considering the fact that MAST
observations are seeing limited.
