Regions of space surrounding SN 1987A probed by light echoes. The left and right panels show the view from far to the north and east, respectively. The probable positions of the three rings (§ 8.3) are centered at the origin. Circles of constant radii, in multiples of 5 lt‐yr, are drawn in light gray. The positions on the plane of the sky of stars 2 and 3 are indicated by horizontal gray dashed lines. Echo parabolae corresponding to the epochs of observation used in this work (and listed in Table 1) are indicated in dark gray, with line style cycling from solid to dashed to dot‐dashed to dotted to dot‐dot‐dot‐dashed in order of increasing epoch.