EDP Sciences
Free Access
Volume 474, Number 2, November I 2007
Page(s) 679 - 687
Section Astronomical instrumentation
DOI https://doi.org/10.1051/0004-6361:20077811

A&A 474, 679-687 (2007)
DOI: 10.1051/0004-6361:20077811

The On The Fly imaging technique

J. G. Mangum1, D. T. Emerson2, and E. W. Greisen3

1  National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA
    e-mail: jmangum@nrao.edu
2  National Radio Astronomy Observatory, 949 North Cherry Avenue, Tucson, AZ 85721, USA
    e-mail: demerson@nrao.edu
3  National Radio Astronomy Observatory, PO Box O, 1003 Lopezville Road, Socorro, NM 87801, USA
    e-mail: egreisen@nrao.edu

(Received 8 May 2007 / Accepted 31 August 2007)

Aims.The On-The-Fly (OTF) imaging technique enables single-dish radio telescopes to construct images of small areas of the sky with greater efficiency and accuracy.
Methods.This paper describes the practical application of the OTF imaging technique. By way of example the implementation of the OTF imaging technique at the NRAO 12 Meter Telescope is described.
Results.Specific requirements for data sampling, image formation, and Doppler correction are discussed.

Key words: telescopes -- methods: observational -- radio continuum: general -- radio lines: general

© ESO 2007

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