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M. Dickinson, H. C. Ferguson, A. S. Fruchter, C. Hanley, R. A. Lucas, J. Mack, P. Madau, M. Postman (STScI), A. Connolly, C. Papovich, A. Szalay (JHU), M. A. Bershady, C. Conselice (U. Wisconsin), P. Eisenhardt (JPL), R. J. Elston (U. Florida), M. Giavalisco (OCIW), R. N. Hook (ST-ECF), S. A. Stanford (IGPP/LLNL), C. C. Steidel (Caltech)
We present data and results from a program to map the entire Hubble Deep Field North (HDF-N) with NICMOS on the Hubble Space Telescope. The field was surveyed through two filters, F110W (1.1\mum) and F160W (1.6\mum), with a mean exposure time of 12.6 ksec per filter and a total observation time of 72 orbits. The near--infrared data allow us to study galaxies at 1 < z < 3 at rest--frame optical wavelengths where we are most familiar with the morphological and photometric properties of galaxies nearby. The images are sensitive to emission from older, redder stellar populations whose light redshifts out of the optical WFPC2 passbands at z > 1. The optical--infrared multicolor parameter space can be used to refine photometric redshift estimates for galaxies, and to search for galaxies at very large redshifts (z > 5). We present the observations and discuss the photometric and morphological properties of the faint galaxy population.