I have been following this supernova with the idea to create a time-lapse movie of its fainting, but no noticeable decrease in its magnitude in visible light occurred while M95 was visible high in the sky. In fact, according to AAVSO light curve the reduction in magnitude between the time of discovery by Paolo Fagotti and Alessandro Dimai on March 16 2012 and the last time I was able to take a good photo on May 24 was less than half of magnitude.
This is not surprising since the spectrum revealed that sn2012aw is a Type-II supernova
Here's its spectrum take by Christian Buil. Notice a very prominent H-alpha emission line at 656 nm - a clear signature of Type-II. This meas that sn2012aw will shine for a while. Type-II supernovae have a plato in luminosity that lasts over 100 days.
After a period of invisibility, I took another photo of the Supernovae in November. Now it's noticeably dimmer.
AAVSO light curve:
Also:
SN2012aw progenitor was found on Hubble images:
Pre-maximum discovery photo (by Associazione Astronomica Cortina).
