OMP reconstructions of the object a), radio emission from Cassiopeia A, using the BDCT as the sparsifying basis. The original object is 200 × 200 pixels and measurements are simulated from 180 antennas. Reconstructions are run with measurements from a URA in b) (0.0434), an NRA of 0.14 in c) (RE = 0.0033), and the VLA-based “Y” array in d) (RE = 0.0119). All pixel brightness values in the object and reconstructions are normalized by the object’s maximum pixel brightness value, to lie on [0, 1]. Image a) can be found at http://images.nrao.edu/395 (courtesy of NRAO/AUI).
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