Extensive near-infrared (H-band) photometry in Coma

We present extensive and accurate photometry in the near-infrared H band of a complete sample of ob- jects in an area of about 400 arcmin 2 toward the Coma cluster of galaxies. The sample, including about 300 ob- jects, is complete down to H 17 mag, the exact value depending on the type of magnitude (isophotal, aperture, Kron) and the particular region studied. This is six mag- nitudes below the characteristic magnitude of galaxies, well into the dwarfs' regime at the distance of the Coma cluster. For each object (star or galaxy) we provide aper- ture magnitudes computed within ve dierent apertures, the magnitude within the 22 mag arcsec 2 isophote, the Kron magnitude and radius, magnitude errors, as well as the coordinates, the isophotal area, and a stellarity index. Photometric errors are 0.2 mag at the completness limit. This sample is meant to be the zero-redshift reference for evolutionary studies of galaxies.