Institution: | a Department of Astronomy, University of Maryland, College Park, MD 20742, USA b University of Nice-Sophia Antipolis, UMR 6202 Cassiopée/CNRS, Côte d’Azur Observatory, B.P. 4229, 06304 Nice Cedex 4, France c Dark Corner Software LLC, 11007 Lake Victoria Lane, Bowie, MD 20720, USA |