  We revisit and extend the study of null geodesics around a slowly rotating
black hole in Chern-Simons modified gravity. We employ the Hamilton-Jacobi
formalism to derive the equations for the shadow profile and determine its
shape. We compare our results with numerical ray tracing, finding good
agreement within the validity of our approximations for slow rotation and small
Chern-Simons coupling. We constrain the model parameters using data from the
observed shadow of SgrA$^*$.
