Supernova sn 2017gxq in Ursa Major (2)

Another picture of sn 2017gxq in NGC 4964 (Ursa Major). Now parent galaxy is visible as a small comet-like nebula (with longer total exposure and better atmosphere). My estimation gives the brightness of the supernova is comparable with the total brightness of the galaxy!

Supernova sn 2017gxq in Ursa Major

On 18-Oct-2017, I tried to picture a quite bright supernova sn 2017gxq, which exploded in a galaxy NGC 4964 (Ursa Major).
Despite the galaxy with the supernova was quite low in the sky (altitude ~29*) and in the direction near the city center (huge light pollution!) I managed to catch it.
Note that a parent galaxy is not visible at all (only very weak nebulosity could be mentioned).
My rough estimation of supernova's brightness is ~14.2m+-0.2

SkyWatcher 150/750 / EQ5 motorized + Canon EOS 600D; 20x32s; ISO=400. Processed with IRIS, green channel.