Scattering phase function for the WD01 Milky Way dust model at three wavelengths (solid lines) compared with the Henyey‐Greenstein phase function ﹩\phi _{0}﹩ and our new phase function ﹩\phi _{\alpha \leq 1}﹩. For ﹩\lambda =0.4\ \mu \mathrm{m}\,﹩ a nine‐term Legendre polynomial representation is also shown.