Intracluster Nebulae in Virgo Cluster of Galaxies

H-alpha image of a 4 x 3 arcmin2 region in the Virgo intracluster region. The image shows a compact HII region (in blue circle to the left) and a confirmed intracluster planetary nebula (in yellow and red circle at the top). The two other objects (in red circles) are additional planetary nebulae candidates.