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Acoustic astrometry with a VLBI-like interferometer

Published online by Cambridge University Press:  01 October 2007

I. Martí-Vidal  and
J. M. Marcaide
I. Martí-Vidal
Affiliation:
Dpt. Astronomia i Astrofísica, Universitat de València, C/ Dr. Moliner 50, 46100 Burjassot, Valencia (SPAIN) email: [email protected]
J. M. Marcaide
Affiliation:
Dpt. Astronomia i Astrofísica, Universitat de València, C/ Dr. Moliner 50, 46100 Burjassot, Valencia (SPAIN) email: [email protected]
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Abstract

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We show how loud-speakers, home digital recorders, and a common personal computer can be used to emulate VLBI observations on a small scale. These audio-VLBI observations allow for single-field astrometry (sources within the same interferometric field), differential group-delay astrometry, etc. These experiments can be set up very easily and in many possible configurations. Students may find these experiments very useful to learn about the innermost details of the interferometric technique.

Keywords

techniques: interferometric
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S248: A Giant Step: from Milli- to Micro-arcsecond Astrometry , October 2007 , pp. 531 - 532
Copyright
Copyright © International Astronomical Union 2008

References

Thomson, A. R., Moran, J. M., & Swenson, G. W. 1986, Interferometry and Synthesis in Radio Astronomy, Wiley, New York.Google Scholar
Wolfram, S., The Mathematica Book, 2003, 5th Ed., Wolfram MediaGoogle Scholar