Calibration

Most observers would want to include calibration scans next to their target source scans. Almost always you would schedule one or two scans on a flux density scale ("amplitude" or "primary") calibrator (e.g., 3C286, J1331+3030) somewhere in the schedule where it is convenient. Spectral line observers would also include one or more scans on a bandpass calibrator if the flux density calibrator is not suited for this (if it is, please select both flux density scale and bandpass calibration as "Intents" for this calibrator source). The target source position scan typically is sandwiched between complex gain ("phase" or "secondary") calibrator scans. To increase integration time beyond the coherence time on a target source, at higher frequencies it is customary to do this as a "fast switching" scan in Jobserve, i.e., not to schedule it as a sequence of new individual scans. Whether or not, the resultant procedure is to loop between your calibrator and target sources.