Supernova in Galaxy 6dFGS gJ135603.2-433432

When you are looking at a galaxy that is designated with the outrageously long name: 6dFGS gJ135603.2-433432, then you know there is something strange or unusual happening in that galaxy far, far away.  In this case, we are looking at a supernova, which is designated PSN J13560419-4335099.  The possible supernova discovery by E. Conseil was reported on May 6, 2014.  It was not visible on images made in April - was someone really looking at this galaxy as recently as April?

The image below was taken with a half meter scope - is it possible for it to be visible to this telescope WITHOUT the supernova?