Practical Interferometry

Robert Laing

  • What is an interferometer?
    • How does an array make images?
    • Building up an image from individual interferometer baseline responses.
  • Basic 2D Fourier Transform relation between visibility and image planes
    • Examples of FT's
    • Choosing the correct baseline range
  • Antennas and the primary beam
  • Basic receiver concepts:
    • amplifier,
    • mixer,
    • bandwidth,
    • IF conversion,
    • digitisation
  • What is a correlator?
    • How are spectra produced
  • Sampling;
    • dirty beam as the FT of the sampling function;
    • gridding
  • Deconvolution
  • Introduction to existing and near-future arrays from 10 MHz - 1000 GHz.
Topic revision: r1 - 29 Aug 2009, AnitaRichards
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