It's a while since I posted an update on the 9 arcsec lightcurve of this
comet so I attach the latest plot.

The comet is only visible from the Southern hemisphere now but, since
the beginning of July, we have been gettng good coverage from observers
using iTelescope. There has been one large post-perihelion outburst.
This took place on June 9 and had an amplitude of around 1.5 magnitudes.

If anyone has 9 arcsec photometry which I have not included on the plot
please let me know. If you would like to take part in the programme the
approach is described here:

https://britastro.org/section_news_item/12p-pons-brooks-observing-campaign

Nick.