import matplotlib.pyplot as plt
from marvin.tools import Maps

maps = Maps('8485-1901')
ha = maps.emline_gflux_ha_6564

fig = plt.figure()
ax = fig.add_axes([0.12, 0.1, 2 / 3., 5 / 6.])
fig, ax = ha.plot(fig=fig, ax=ax, cb_kws={'axloc': [0.8, 0.1, 0.03, 5 / 6.]})