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Paper: Multi-Frequency Synthesis
Volume: 180, Synthesis Imaging in Radio Astronomy II
Page: 419
Authors: Sault, R. J.; Conway, J. E.
Abstract: Multi-frequency synthesis is the practice of using visibility data measured over a range of frequencies when forming a continuum image. Because observing frequency is easier to vary than antenna location, it is an effective way of filling the (u,v) plane for an observation. Here we consider the artifacts in MFS images caused by source spectral variation. For frequency ranges of about 30%, for observations where only modest dynamic range is required, the artifacts of MFS can be completely ignored. For higher dynamic range observations, some calibration techniques and deconvolution algorithms are described which minimize the artifacts.
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