机译:Brorfelde Schmidt CCD Catalog
U.S. Naval Observatory, 3450 Massachusetts Avenue, NW, Washington, DC 20392, United States;
Niels Bohr Institute, C?penhagen University, Juliane Maries Vej 30, DK-2100 Copenhagen Oe, Denmark;
Astrometry; Catalogs; Color figure; Data analysis Online-only material; Methods;