Single-source, single-field observations

That's the simplest case. The point source sensitivity in this case is

  $\displaystyle \ensuremath{\sigma_\ensuremath{\mathrm{Jy}}} = \frac{\ensuremath{...
...n_\ensuremath{\mathrm{pol}}}\,\ensuremath{\Delta t_\ensuremath{\mathrm{on}}}}}
$ (21)
where \ensuremath{\Delta t_\ensuremath{\mathrm{on}}} is the time spent on-source. It is related to the total elapsed telescope time \ensuremath{\Delta t_\ensuremath{\mathrm{tel}}} through:
  $\displaystyle \ensuremath{\Delta t_\ensuremath{\mathrm{on}}}= \frac{\ensuremath...
...ta t_\ensuremath{\mathrm{tune}}}}{\ensuremath{\eta_\ensuremath{\mathrm{tel}}}}
$ (22)
For single source projects, \ensuremath{\eta_\ensuremath{\mathrm{tel}}} is estimated to be about 1.6. Note that the exact value will depend on several parameters such as the number of calibrators and the distance between the source and the calibrator(s).