Brorfelde Schmidt CCD Catalog (BSCC)
NAVAL OBSERVATORY WASHINGTON DC
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The Brorfelde Schmidt CCD Catalog BSCC contains about 13.7 million stars, north of 49 degree Declination with precise positions and V, R photometry. The catalog has been constructed from the reductions of 18,667 CCD frames observed with the Brorfelde Schmidt Telescope between 2000 and 2007. The Tycho-2 catalog was used for astrometric and photometric reference stars. Errors of individual positions are about 20 to 200 mas for stars in the R 10 to 18 mag range. External comparisons with 2MASS and SDSS reveal possible small systematic errors in the BSCC of up to about 30 mas. The catalog is supplemented with J, H, and Ksub s magnitudes from the 2MASS catalog.