Spatial distribution of the 908 objects in the NGC 1316 observations. North is up and east is left. The centers of the two galaxies are marked with black crosses. Surrounding NGC 1317, the solid, black dots represent PNe bound to NGC 1317 with  >90% probability. The colored dots indicate membership in NGC 1316. If a PN cannot be assigned membership with  >90% probability, it is marked as ambiguous (hollow black dots). Ignoring the structure from this companion galaxy, this figure shows NGC 1316’s rotation oriented along PA = 64° (see Sect. 4.2). The north-east is rotating away from the observer while the south-west is moving towards us relative to the mean.