  Recent proposals have been advanced to apply imaging air Cherenkov telescope
arrays to stellar intensity interferometry (SII). Of particular interest is the
possibility of model-independent image recovery afforded by the good (u,
v)-plane coverage of these arrays, as well as recent developments in phase
retrieval techniques. The capabilities of these instruments used as SII
receivers have already been explored for simple stellar objects, and here the
focus is on reconstructing stellar images with non-uniform radiance
distributions. We find that hot stars (T > 6000 K) containing hot and/or cool
localized regions (T \sim 500 K) as small as \sim 0.1 mas can be imaged at
short wavelengths ({\lambda} = 400 nm).

Solar and Stellar Astrophysics;Instrumentation and Methods for Astrophysics