Efficient wide-field VLBI mapping

Talk at the imaging and calibration workshop Algorithms2008 in Oxford, 2 December 2008

O. Wucknitz [1]

  1. Argelander-Institut für Astronomie, Auf dem Hügel 71, 53121 Bonn, Germany

Abstract

I present results from our wide-field VLBI experiment at 90cm wavelength in which we mapped regions of interest around known WENSS sources within the primary beam of the telescopes. In order to image the complete primary beam, more efficient methods are required. These are now being worked out. I present how the complete primary beam of any VLBI observation with sufficient resolution in time and frequency can be mapped with moderate effort using a hierarchical down-averaging approach. This is faster than classical methods by several orders of magnitude.

My other presentation at this workshop can be found here.



download original presentation
PDF file (1.5 MB, last change 30 Nov 2008)
26 pages, suitable for presentation with acroread. This version also includes some hyperlinks for quick navigation and links to references.

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Script last modified on 7 Sep 2010
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