1 INTRODUCTION

2 THE MATHEMATICAL MODEL
2.1 The image response function
2.2 Projection effects
2.3 The observations
2.4 Correcting estimated values
2.5 Extension to multiple frequencies
2.6 Solving for a background gradient

3 THE DATA SIMULATIONS

4 THE PROCESSING OF THE SCAN DATA

5 IMAGE PARAMETERS FROM PIXEL MAPS

6 RESULTS AND COMPARISONS
6.1 Distribution of test sources
6.2 The test data sets
6.3 Circular-symmetric beam
6.4 Circular symmetric beam, source position fixed at pixel centre
6.5 Varying ellipticity, flux and latitude

7 DISCUSSION AND CONCLUSIONS