  Stellar amplitude interferometry is limited by the need to have optical
distances fixed and known to a fraction of the wavelength. We suggest reviving
intensity interferometry, which requires hardware which is many orders of
magnitude less accurate, at the cost of more limited sensitivity. We present an
algorithm to use the very high redundancy of a uniform linear array to increase
the sensitivity of the instrument by more than a hundredfold. When using an
array of 100 elements, each almost 100m in diameter, and conservative
technological improvements, we can achieve a limiting magnitude of about
mb=14.4. Digitization, storage, and off-line processing of all the data will
also enable interferometric image reconstruction from a single observation run,
and application of various algorithms at any later time. Coronagraphy,
selectively suppressing only the large scale structure of the source, can be
achieved by specific aperture shapes. We conclude that after three decades of
abandonment optical intensity interferometry deserves another review.
