UM 420, a blue compact galaxy hosting intense star-formation activity, is at the east edge of the halo but apparently in the background at a redshift-based light travel time of 788 million years. It was possibly glimpsed at 375x and 500x as an extremely faint "star", but I wasn't confident of the observation to log it as seen.

600/800mm - 24" (12/28/16): at 375x; faint to fairly faint, fairly small, slightly elongated SW-NE, 25"x20", brighter nucleus. A mag 13.2 star is close east [35" from center].

Notes by Steve Gottlieb