Action #784

Updated by Knödlseder Jürgen about 11 years ago

The actual @irf_elliptical()@ and @npred_elliptical()@ methods intergate over a circle rather than integrating over an ellipse. This leads to convergence problems in the integrations which considerably slow down the computations, and make things inaccurate.

The integration methods have to be improved so that the integration is effectively done over the elliptical shape.

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