It looks like no further significant changes are now possible for Comet SWAN
given these images taken 3 days apart, using similar total exposure times
(~37 min), and taken almost symmetrically placed either side of the time of
perihelion. Atmospheric conditions were rather similar also with the target
located some 10° and 7° above the horizon.

The remnant appears to comprise a tenuous cloud of dust and debris with no
evidence of any pseudonucleus, nor any fragments or condensations within the
coma.

Richard Miles