'Clean and Restore' technique applied to observations from the 'Westerbork Synthesis Radiotelescope' and from the 'Northern Cross radiotelescope'

Details 'Clean and Restore' technique applied to observations from the 'Westerbork Synthesis Radiotelescope' and from the 'Northern Cross radiotelescope' 'Clean and Restore' technique applied to observations from the 'Westerbork Synthesis Radiotelescope' and from the 'Northern Cross radiotelescope'

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mmsai..50..387f&link_type=abstract

(Convegno sulle Metodologie di Trattamento dell'Informazione, 2nd, Trieste, Italy, Feb. 23, 24, 1979.) Società Astronomica Itali

Astronomy and Astrophysics

Astronomy

Data Reduction, Fourier Transformation, Radiation Measurement, Radio Astronomy, Radio Telescopes, Curve Fitting, Iterative Solution, Radial Distribution, Radio Interferometers, Radio Sources (Astronomy), Signal Processing

Scientific paper

In radio astronomy, interferometer techniques with moderately sized widely spaced antennas are used to obtain position, flux, and other source parameters. However, for practical reasons, it is often impossible to cover uniformly the Fourier plane (i.e., the U-V plane). Holes in the U-V plane show up as undesirable sidelobes in the synthesized beam, and many problems are involved in the reduction of irregularly spaced interferometer measurements. The aim of the reduction methods is to produce a map which, as far as possible, is equivalent to that obtained by regular coverage of the U-V plane. To meet this aim, two packages of FORTRAN programs for applying Hogbom's (1974) Clean and Restore procedure to Westerbork Synthesis Radio Telescope observations and Bologna Northern Cross observations are presented.

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