  HERA is a highly-redundant transit interferometer with 14\,m-diameter
parabolic dish elements. We exploit the fact that the Galactic centre transits
through the main beam of the telescope to attempt a conventional
self-calibration approach to imaging and calibration. The Galactic centre
provides a bright source which, we show, can be approximated as a point source
sufficiently well to initialise the self-calibration loop and derive initial
delays and antenna frequency-independent phases. Subsequent iteration using a
more complex sky model derived from the data itself then converges to a
reasonable bandpass calibration. The calibration solutions have good stability
properties. We show therefore that the conventional self-calibration is a
feasible parallel approach in addition to the redundant calibration already
planned for HERA. The conventional imaging and calibration is useful as a
cross-check to the alternatives being pursued in the HERA project, as a way of
quantifying the performance of the hardware on the ground (and potentially
identifying problems) and as a route to imaging and removing brighter continuum
sources before power spectrum analysis.
