Possible Supernova PSN J14382348+2320551 in IC 4475 Narrowfield L - May 18

Possible Supernova PSN J14382348+2320551 in IC 4475 Narrowfield L - May 18, a photo by Joseph Brimacombe on Flickr.

Via Flickr:
SUMMARY
SN seen north of the nucleus at Mag 17.7 L
TECHNICAL INFORMATION
Total exposure 45 min (3 x 15 min, luminance filter; binned 2x2, scale 0.91 asec/px)
Time: 2012.5.18.381
Astrometry: RA 14 38 23.51 Dec 23 20 55.3
Photometry: 17.7 +/- 0.1 L
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.