Triple system 07185−5724. The left panel shows ACF of the data cube recorded in 2018.2 with the full field; the peaks corresponding to the companions Ab at 0.″4 and B at 2.″9 are indicated. In the right panel, the ACF in the 6.″2 field is shown. The peak corresponding to the correlation between Ab and B (red circle) falls outside the field and is aliased (reflected) to a different position (red arrow), creating an illusion of another companion Bb.