That is very interesting, particularly the continuing strong C2 emission line. We now seem to have a cloud of rubble moving down the tail but the total magnitude is also falling which would imply that there was no sudden release of gas into the coma at the breakup. This implies that the comet had pretty much exhausted its volatiles before it broke up so we should now see the outer come fade and dissipate since it has no source at the centre. It would be good to follow this spectroscopically as long as you can.
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