ENA H energy spectra obtained from the model ion distributions in approximations (1) and (2) for 3 directions: θ = 0° (forward) 90° (crosswind), and 180° (the heliotail). In approximation (1) (convection only) the energy dependence of the directional structure of the ENA flux results mainly from the θ-dependence of the ion core spectrum at the termination shock. In approximation (2) the charge exchange neutralization of the parent ions causes an energy-dependent shift in the ENA spectrum. The result, with the crossover of the heliotail and the forward spectra at  ~40 keV, is not changed much by subsequent approximations.