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Introduction

This chapter describes how to reduce data from the ATNF's Compact Array (ATCA) in AIPS++. It should be read in conjunction with several other chapters in Getting Results, including the chapters which cover i) synthesis calibration, ii) synthesis imaging (including general imaging and mosaicing), iii) display of data, and iv) image analysis.

The data reduction categories covered in this chapter include those for continuum data, continuum polarimetry, spectral line data, and spectral line polarimetry. Individual steps in each data reduction sequence are illustrated using Glish script excerpts. These data reduction steps can equivalently be executed from the Toolmanager GUI interface.

The reduction sequences described in this chapter require some familiarity with the tools listed here:

atcafiller: is used to load ATCA RPFITS file data into an AIPS++ MeasurementSet (MS).
ms: is used to access the MS (e.g. list and summarize visibility data).
msplot: is used for plotting and editing of visibility data, and is useful for investigation and editing during calibration cycles.
Calibrater: is used to apply or solve for a range of antenna-based calibration effects (like gain, bandpass and leakage), and to plot calibration solutions.
Imager: is used to image (Fourier Transform, deconvolve etc.) the data held in the MeasurementSet (MS).
Viewer: is used to examine and display data and perform related operations.
Image: is used to access and analyse images.

The User Reference Manual contains the primary documentation for all these tools and their functions. The aim of this document is to provide pointers to the relevant chapters and examples, and to describe their use in ATCA reduction.

Users are also referred to the Miriad-aips++ dictionary which is a separate chapter in Getting Results, which provides a mapping of some common Miriad tasks to their counterparts in AIPS++.

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