  New results on the radio-quiet type 2 quasar known as the Teacup galaxy
(SDSSJ1430+1339) based on the long-slit and 3D spectroscopic data obtained at
the Russian 6-m telescope are presented. The ionized gas giant nebula extending
up to r=56 kpc in the [O III] emission line was mapped with the scanning
Fabry-Perot interferometer. The direct estimation of the emission line ratios
confirmed that the giant nebula is ionized by the AGN. Stars in the inner r<5
kpc are significantly younger than the outer host galaxy and have a solar
metallicity. The central starburst age (~1 Gyr) agrees with possible ages for
the galactic merger events and the previous episode of the quasar outflow
produced two symmetric arcs visible in the [O III[ emission at the distances
r=50-55 kpc. The ionized gas velocity field can be fitted by the model of a
circular rotating disk significantly inclined or even polar to the stellar host
galaxy.
