Having specified the spectral setup, you are now ready to finalise the spatial setup based on the target information you provided in Step 3.4. Selecting the Spatial tab of the Field Setup editor panel will bring up the visual editor (see Fig. 3.7). You can Query one of the image servers selected from the drop-down menu for a catalogue image of the area surrounding your source. Alternatively, you can load and display your own FITS image by clicking the folder icon in the spatial editor toolbar (only if it contains WCS information in J2000 equatorial coordinates; galactic coordinates are currently not supported). The antenna primary beam is indicated by the red circle centred on the source coordinates specified. The smaller green circle corresponds to the inner third of the antenna beamsize and hence the area of maximum sensitivity. Note that the beam size is automatically calculated by the OT based on the reference frequency selected from your spectral setup (this is why the spatial setup should only be finalised after the observing frequency has been selected). If ACA observations have been requested in the Control & Performance section, the beam may be displayed for either the 12-m or the 7-m antennas. You can use the buttons in the toolbar above and below the spatial viewer to perform simple visualisation operations such as adjusting the cut levels, zooming, and saving the image. Please see OT video tutorial 3: The Spatial Field Setup for a practical demonstration of all functionalities.
When entering the target information in Step 3.4 you selected one of two options: Individual Pointing(s) or 1 Rectangular field. We now describe the procedure to be followed for both of these cases.