I remember seeing it in the late 1970’s visually with a 10inch F6.5 newtonian. It could have been 1978-79 but I’m having trouble locating that observation in my files (which is why I’m late to the discussion). I do recall that it was a very difficult observation to make, with the separation at or near maximum distance I think. If I find my notes, I’ll come back. Don’t think I dreamt it!
Gary