∀ {A : Type u_1} [inst : TopologicalSpace A] [inst_1 : NonUnitalRing A] [inst_2 : StarRing A] [inst_3 : Module ℂ A]
  [inst_4 : IsScalarTower ℂ A A] [inst_5 : SMulCommClass ℂ A A] [inst_6 : StarModule ℂ A]
  [NonUnitalContinuousFunctionalCalculus ℂ A IsStarNormal] (a : A),
  autoParam (IsStarNormal a) quasispectrum_imaginaryPart._auto_1 →
    quasispectrum ℂ ↑(imaginaryPart a) = (fun x => ↑x.im) '' quasispectrum ℂ a