Viewed this last night in Steve Gottlieb's 24" at assorted mags of 375 to 500 and use of NPB filter as well as unfiltered. (Thanks Steve). I was unable to detect a central star but this object has a curious property using an NPB filter. Unfiltered it is an easy find which was surprising for having the semi-obscure Minkowsky designation and not an NGC or IC designation. It should be an NGC or IC class object (IMHO) but perhaps just not known at the time of those catalogs.

The NE side was much more detectable with a sharper difference in the bright donut on that side. I had not seen a knot unfiltered but the brighter glow there was clear to me. At first glance it seemed almost disk-like but on inspection the donut property becomes apparent averted.

The interesting thing is putting in NPB filter all but kills the field star just off the north BUT highlights the knot in the NE as a stellar point in mid-donut band. Very interesting response to the NPB, give that a go too.

Nice object of the Week! Thanks