WSCLEAN: an implementation of a fast, generic wide-field imager for radio astronomy
Offringa, Andre; McKinley, Benjamin; Hurley-Walker, Natasha; Briggs, Franklin; Wayth, Randall; Kaplan, D L; Bell, M. E.; Feng, Lu; Neben, A R; Hughes, J D; Rhee, Jonghwan; Murphy, Tara; Bhat, N.D.R.; Bernardi, Gianni; Bowman, J D; Deshpande, Avinash; Ewall-Wice, Aaron
Astronomical wide-field imaging of interferometric radio data is computationally expensive, especially for the large data volumes created by modern non-coplanar many-element arrays. We present a new wide-field interferometric imager that uses the w-stacking algorithm and can make use of the w-snapshot algorithm. The performance dependences of CASA's w-projection and our new imager are analysed and analytical functions are derived that describe the required computing cost for both imagers. On...[Show more]
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|Source:||Monthly Notices of the Royal Astronomical Society|
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