Added documentation for new optional psf() method parameters.
@@ -203,6 +203,11 @@ class IACTBasicImageEstimator(BasicImageEstimator):
----------
observations : `~gammapy.data.ObservationList`
List of observations
+ containment_fraction : float (0.99)
+ Minimum PSF containment fraction included in kernel image.
+ rad_max : `~astropy.coordinates.Angle` (None)
+ If specified, passed to `~gammapy.irf.TablePSF.kernel`;
+ containment_fraction is then ignored.
Returns
-------
