-- The Formation and Evolution of Rich Clusters in the LMC. We use WFPC2, Nicmos and STIS images of 8 rich LMC clusters to obtain deep colour-magnitude diagrams (CMDs) and luminosity functions. As the clusters have different ages and metallicities, these data provide a wealth of information on how cluster properties, such as its stellar mass function and binary fraction,. For the youngest clusters, age spreads and pre-main sequence stars may also be obtained.
-- The Optical Redshift Survey. Containing some 8500 galaxies with measured redshifts and spanning about 2/3 of the celestial sphere, we have been using these data to analyse the clustering of galaxies and the properties of the large-scale structure in the local Universe.
-- The structure and stellar luminosity function of the Galaxy from analysis of HST fields and the distribution of its open clusters. We use methods of statistical analysis to compare observed CMDs of field stars to theoretical CMDs constructed from models for the structure of the Galaxy, therefore testing model predictions and inferring those which best describe the data. We also collaborate on an on-going effort to map out the disc and thick disc structure using a photometric survey of open clusters in the Galaxy.