def isCalibrator(self):
"""
Returns whether the field is a known calibrator field or not.
"""
calibratorRAs, calibratorDecs, calibratorNames = lib_util.getCalibratorProperties(
)
return (self.getNameField() in calibratorNames)
def getCalibratorNamesSorted(self):
"""
Returns a list of names of known calibrators, sorted by distance from small to large.
"""
myRA, myDec = self.getPhaseCentre()
calibratorRAs, calibratorDecs, calibratorNames = lib_util.getCalibratorProperties()
calibratorDistances = lib_util.distanceOnSphere(myRA, myDec, calibratorRAs, calibratorDecs)
calibratorNamesSorted = calibratorNames[np.argsort(calibratorDistances)]
return calibratorNamesSorted
