Radial profile of the GC number density surrounding the BCG NGC 1275 (solid purple line) and the nearby galaxy NGC 1272 (solid green line). To construct the profile of NGC 1275, we masked both NGC 1272 and the NGC 1265 (the brightest galaxy in the north of the field of view) with ellipses with a = 100 kpc. The profile of GCs in both galaxies are well fit by Sérsic profiles (dotted coloured lines), but the GCs associated with NGC 1275 are far more extended, with a measurable excess above the background up to 600 kpc. The radial profile of GCs surrounding NGC 1275 is well matched to the H_E- band surface brightness profile of the BCG+ICL (black dashed line, scaled arbitrarily) at radii greater than ~60 kpc from the BCG nucleus. A significant fraction of the GCs may be missed in the highly crowded region within 20 kpc of the BCG’s core.