SED based catalogue of Galactic halo BHB candidate stars. Gaia DR3 CMD showing objects with a tangential velocity greater than 145 km s⁻¹ (grey dots). The Gaia DR3 based catalogue of BHB stars (magenta dots), the SED confirmed BHB stars (green dots), spectrally confirmed BHB stars (yellow triangles), and spectrally confirmed MS stars (red squares). Zero mag extinction (black line) and 0.2 mag extinction (cyan line) theoretical tracks are superimposed.