Now that this comet is fading I've resumed collecting photometry in a 9
arcsec aperture. The intention of this photometry is to look for
short-term changes in activity. It is not a measure of the overall
brightness of the comet.

To ensure that we get consistent measurements between observers the
method is described here:

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

The latest lightcurve is attached. Something strange seems to be
happening at the moment but I would like to get confirmation. Does
anyone have any images that they can measure taken between early
November and now?

Unfortunately the weather here and in Spain has been poor over the last
couple of weeks.

Nick.