We present the results of the first search for ultracompact dwarfs (UCDs) in the Perseus cluster core, including the region of the cluster around the unusual brightest cluster galaxy NGC 1275. Utilizing Hubble Space Telescope Advanced Camera for Surveys imaging, we identify a sample of 84 UCD candidates with half-light radii 10<r_e_<57pc out to a distance of 250kpc from the cluster centre, covering a total survey area of ~70arcmin^2^.
Cone search capability for table J/MNRAS/422/885/table2 (UCDs in the vicinity of NGC 1275 identified from F435W and F625W imaging)
Cone search capability for table J/MNRAS/422/885/table3 (UCDs identified from our F555W and F814W band imaging covering five fields of the Perseus core)