get_staeckel_fudge_delta

gala.dynamics.get_staeckel_fudge_delta(potential, w, median=True)[source]

Estimate the focal length parameter, ∆, used by the Staeckel fudge.

Parameters
potentialPotentialBase subclass

The potential that the orbits were computed in, or that you would like to estimate the best-fitting Staeckel potential for.

wOrbit, PhaseSpacePosition

The orbit(s) or phase space position(s) to estimate the focal length

Returns
deltasQuantity [length]

The focal length values.