${\mathrm{\Omega }}^{-}$ and ${\bar{\mathrm{\Omega }}}^{+}$ production in Au+Au collisions at $\sqrt{s_{NN}}$ = 130 and 200 GeV

Mid-rapidity Omega and anti-Omega production in Au+Au collisions at RHIC is studied with the STAR experiment. We report preliminary results on yields and spectra at $\sqrt{s_{NN}}$ = 130 and 200 GeV. Production relative to negatively charged hadrons (h-) as well as thermal freeze-out and collective expansion are discussed.