In this case, you can define just one evenly sampled rectangular field mosaic. In addition to the Field Centre Coordinates (set by default to the Source Coordinates), you specify the size of the field as p length times q length, the Position Angle and the Spacing of individual pointings. By default, the spacing is set to Nyquist sampling (Spacing = 0.48113 times fraction of main beam). You can visualise the rectangular area covered as well as the individual pointings in the spatial viewer (see Fig. 3.7). Note that the total number of mosaic pointings per project (summed over all Science Goals) is limited to 150 pointings with the 12-m array (ACA pointings are counted separately). If the ACA is selected in the Control & Performance editor (see Step 3.8), you can switch between the mosaic set up for the 12m and 7m antennas by clicking the appropriate Antenna Diameter radio button, and the area scanned by Total Power observations will be shown by a turquoise box. You may wish to export the coordinates of the individual pointings (e.g. for use in CASA); this is easily done using the Export button next to the displayed number of pointings.