Possible Supernova PSN J12271283+0925132 in NGC 4424 Widefield L - May 18

Possible Supernova PSN J12271283+0925132 in NGC 4424 Widefield L - May 18, a photo by Joseph Brimacombe on Flickr.

Via Flickr:
SUMMARY
SN seen east of the nucleus at Mag 14.9 L
TECHNICAL INFORMATION
Total exposure 60 min (3 x 20 min, luminance filter; unbinned, scale 3.5 asec/px)
Time: 2012.5.18.332
Astrometry: RA 12 27 12.84 Dec 09 25 13.1 (from narrowfield data)
Photometry: 14.9 +/- 0.1 L (from narrowfield data)
These data were collected remotely using a 10.5-cm
FSQ and STL11K camera at New Mexico Skies, Mayhill, New
Mexico by Joseph Brimacombe, Coral Towers Observatory,
Cairns, Australia.