  The construction of the operators and correlators required to determine the
excited baryon spectrum is presented, with the aim of exploring the spatial and
spin structure of the states while minimizing the number of propagator
inversions. The method used to construct operators that transform irreducibly
under the symmetries of the lattice is detailed, and the properties of example
operators are studied using domain-wall fermion valence propagators computed on
MILC asqtad dynamical lattices.
