  We present a combined analysis of the new eta photoproduction data for total
and differential cross sections, target asymmetry and photon asymmetry. Using
basic assumptions, this allows a model-independent extraction of the $E_{2-}$
and $M_{2-}$ multipoles as well as resonance parameters of the $D_{13}(1520)$
state. At higher energy, we show that the photon asymmetry is extremely
sensitive to small multipoles that are excited by photons in the helicity 3/2
state. These could be, e.g., the $F_{15}(1680)$, the $F_{17}(1990)$, or the
$G_{17}(2190)$ resonances.

Nuclear Theory