Last week I got some frames of this comet, and was cut short by the weather.... I did get back to it later that week...
Starry Night Pro reports a magnitude of 9.9 for that date.
cometchasing.skyhound.com reports 11.7 for the similar time.
This image is 30x3min subs, Atik-420 binned 2x2, 200mm f/4 newt, luminance only.