405P/Lemmon 2020-Nov-28 Nick Haigh

Image is 2 hours of 10sec subs under moonlit hazy skies. 16" @f2.9, ASI1600MM, baader 610 filter, binned to 1.36"/pixel. Stacked in DSS but using comet coordinates from ASTAP.

According to some transformations to R based on UCAC4 V and (B-V) colours of field stars, and assuming solar colours for the nuclei, and assuming I'm effectively measuring mR (actually a bit longer) I get mV = 19.0 and 19.6 for the main nucleus and the one below respectively.

29/11/20, 0034 to 0500UT (minus cloud and computer crash).