Peter,

Thanks. That was a good effort since the comet is low down and the wind
was very troublesome. I managed to get it too and the magnitude in a 9
arcsec radius is now back to the trend line:

https://nickdjames.com/Comets/2024/12P_lightcurve_9arcsec.png

Thanks for sending me your first photometry measurement. I'll check that
later but it looks pretty good.

The outburst coma diameter is now 160 arcsec and I get a total magnitude
from comphot of 8.6 in a 6 arcmin diameter aperture.

https://nickdjames.com/Comets/2024/12p_20240122_184815_ndj.jpg

Nick.

On 23/01/2024 01:27, Peter Tickner - peter.tickner1472 at btinternet.com
(via baa-comet list) wrote:
> Despite buffeting wind and occasional bursts of cloud I did manage to get
> some images of 12P that I hope to process.  The coma looks much more diffuse
> tonight with a smaller bright area but a spreading cloud.