Wideband mosaic imaging with the VLA - quantifying faint source imaging accuracy

U. Rau*, S. Bhatnagar and F. N. Owen
National Radio Astronomy Observatory, Socorro, New Mexico, USA

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A large number of deep and wide-field radio interferometric surveys are being designed to measure accurate statistics of faint source populations. Most require mosaic observations, and expect to benefit from the sensitivity provided by broad-band instruments. In this paper, we present preliminary results from a comparison of several wideband imaging methods in the context of how accurately they reconstruct the intensities and spectral indices of micro-Jy level sources.

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Keywords : wide field imaging – wideband mosaics – faint source statistics – intensity and spectral index accuracy