I had a much better observation of M51 tonight and made a possative observation, with this galaxy being so far north and low down I lose about half a mag due to atmosphere but was still able to see the Supernova in moments of fair seeing there is a 13.2 mag star close by which to compare the supernova by and I estimate it to be 14mag .
Unfortunatly I don'tdo astroimaging with the 16"so carn't help. astroron