Beswick and Muxlow, working with graduate student Nick Wrigley, have been working to chararacterise the primary beam response of individual telescopes and their combinination to create interferometric primary beam response for inhomgeneous telescope arrays. Nick's preliminary report is attatched. We will continue to test this in AIPS, including for eMERLIN data with Lovell.

The next steps include work with Harrison, who will be measuring the beam responses for several of the eMERLIN telescopes. This can be incorporated into Wrigley's work. We will also look at how this can be made compatible with the CASA facilities for incorporating beam voltage patterns and weighting.

Richards has developed ready-reckoners for data averaging in time and frequency, i.e. how much can one reduce the size of data sets for continuum imaging without excessive bandwidth or time smearing, and also spectral index, phase rate and dynamic range effects, as a function of the desired field of view. A summary and examples for ALMA and e-MERLIN were presented at CALIM, see http://www2.skatelescope.org/indico/materialDisplay.py?contribId=11&sessionId=13&materialId=0&confId=171 Suitable scripts can be provided (for any array meeting the assumptions e.g. dishes) and eventually options might be provided for SPLIT in CASA.

Richards has been testing wide field imaging tasks (among others) incorporated in CASA, in liaison with Urvashi Rau, and provided feedback on requirements to Stephen Bourke and Ian Stewart re fring-like task.

Harrison and Richards worked with Petry on getting e-MERLIN coordinates incorporated and testing their use in coordinate transform tasks in CASA.