This suggests that merging is a major trigger of QSO activity at all redshifts, although the evolutionary state of the merger components must evolve strongly with redshift. This work needs to be extended to visible wavelengths to study the young stellar populations associated with the QSO host galaxies and their companions. The new PUEO beamsplitters and ability to bin on-chip will make the visible band observations significantly more efficient. The program needs to be continued to build up statistics on different redshifts and the difference between radio-loud and quiet QSOs. In that paper we also show some PSF models and fits.
Further papers are in preparation.
We would like to thank CFHT staff for their excellent support of the instrument and our observations.