OPMINEL specifies the minimum elevation in degrees below which sources will be considered to be ``down''. In all modes, if less than OPMINANT antennas are up, the scan will be skipped.
This is used mainly for optimizing modes to help select scans, and for experiment planning in order to, for example, plot the uv coverage available if all low elevation data and all data with less than several antennas will be discarded. The default will have no effect on schedules.