The sibling is so close it appears to be "bouncing" between 250° and 190° right on the "airy disc" of the primary. It took a lot of fiddling with the micro-focus knob to see it. If I didn't already know something was there I would totally of missed it!
Very small and uniform circle. AV not required but helps expand the edges of the cluster.
Never has AV been so necessary! Had to zoom to a point where the brighter stars surrounding the galaxy were out of the FOV. I was then able to see a little more with AV.
