# PYME.localization.FitFactories.zEstimators.astigEstimator module¶

Calculates starting parameters for fitting to an astigmatic PSF. Note that this is already somewhat more sophisticated than the entire 3D anaylsis used by ‘QuickPalm’ and the like as it attempts to correct for coupling between the lateral centroid and defocus

PYME.localization.FitFactories.zEstimators.astigEstimator.calibrate(interpolator, md, roiSize=5)
PYME.localization.FitFactories.zEstimators.astigEstimator.getStartParameters(data, X, Y, Z=None)