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This chapter describes how to calibrate synthesis data. At present,
this covers data only from connected-element arrays or VLBI data for
which fringe-fitting has already been performed elsewhere. The
discussion currently covers treatment of calibration effects in the
uv-plane; calibration of image-plane effects will be described in a
future version of this document.
The major AIPS++ tools that one will need to use are:
- Calibrater
- is used for applying
or solving for a range of uv-plane calibration effects, and plotting
of calibration solutions.
- Imager
- is used for gridding and
Fourier transformaton of a MeasurementSet, deconvolution via various
methods, and prediction of model visibilities from deconvolved
images. Calibration of image-plane effects (those that are a function
of direction in the sky) are handled in this tool.
- Msplot
- is used for plotting and
editing of visibility data, and is useful for investigation and
editing during calibration cycles.
- Componentmodels
- are used
to represent the sky brightness by discrete components. Such models
may be used in imaging and calibration to improve the quality of the
results.
In addition, you will need to use the Viewer (see also
the Display section of Getting Results) to
examine your images, and perhaps the MeasurementSet tool MS to load and save MeasurementSets.
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2004-08-28
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