Perseus field divided into three regions of 10 000 pixels × 10 000 pixels each (1000″ on a side) to investigate completeness under various conditions. Region 1 contains large galaxies, Region 2 has a regular field density composed of background galaxies and stars; and Region 3 shows Galactic cirrus. The Galactic cirrus manifests itself as a faint orange haze in frame 3, with the top-left thumbnail displaying an enhanced version of the image that highlights extended diffuse emission, cirrus, and intracluster light. Collectively, these three representative regions cover 44% of the total area. In all images, north is oriented upwards, and east is to the left.