Possible Supernova PSN GHO1320 in PGC 1957695 Narrowfield L - May 18, 2013

Possible Supernova PSN GHO1320 in PGC 1957695 Narrowfield L - May 18, 2013, a photo by Joseph Brimacombe on Flickr.

Via Flickr:
SUMMARY
SN seen south-west of the nucleus at Mag 22.0 L.
DISCOVERY
Canada-France-Hawaii Telescope: 2013.5.14 Mag 20.5
TECHNICAL INFORMATION
Total exposure 90 min (6 x 15 min, luminance filter; binned 2x2, scale 0.91 asec/px)
Time: 2013.5.18.262
Astrometry: RA 13 22 48.11 Dec +31 39 10.8
Photometry: 22.05 +/- 0.64 L (V for ref)
These data were collected remotely using a 51-cm RCOS and STL11K camera at New Mexico Skies, Mayhill, New Mexico by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia.
FITS file available on request from jbrimaco@bigpond.net.au