Studies of rich clusters of galaxies - IV. Photometry of the Coma cluster.

V25 magnitudes have been measured for 923 galaxies in a 1.22 sq deg field centered on the Coma Cluster. They form a complete sample of 497 galaxies to a V25 limit of 17.5 with 426 galaxies at fainter magnitudes. The luminosity function has been constructed. Galaxies of intermediate brightness (V25 magnitude of 14 through 16) are more strongly concentrated to the cluster center than either brighter or fainter members.