I agree with Rolf here Leo, a vey cool capture. Getting NGC 3628's full (or most of it) tidal tail is a bit like revealing Centaurus A's very faint hocky stick shaped outer extensions ie few have manage to capture them and it would seem many don't even know they are there
Funnily enough I was thinking perhaps Rolf had been hitting this with one of his marathon efforts, but it seems not...wonder what he is doing in his secret laboratory??
Mike