  Recently obtained polarized target and photon asymmetry data in eta
photoproduction are shown to be very powerful, in conjunction with the
differential cross-section data, in yielding model-insensitive constraints on
the electrostrong parameters for the excitation and decay of the $N^{*}(1520)$
resonance. The extracted ratio of its electromagnetic helicity amplitudes,
$A_{3/2}/A_{1/2}$, provides a critical test for the QCD-inspired hadron models.
