Left: number density of galaxies around the NGC 7492 globular cluster. The bin size and smoothing length are the same as those used in Figure 2. The innermost circle corresponds to the tidal radius, while the contour line corresponds to the pixels above 1σ in the matched filter map of stars around the cluster (defined in Figure 2). Light blue filled circles give the positions of the BHB candidate stars at the distance of NGC 7492. Right: E(B − V) extinction around the cluster. The bin size and lines are the same as in the left panel. The color bar shows the mean extinction value per pixel.