The Millennium Galaxy Catalogue (MGC) is a deep ( B,lim = 26 mag arcsec -2 ), wide-field, charge-coupled device imaging survey, covering 37.5 deg 2 . The MGC survey region is completely contained within the Two-Degree Field Galaxy Redshift Survey (2dFGRS) and the Sloan Digital Sky Survey Early Data Release (SDSS-EDR). We compare the photometry and completeness of the 2dFGRS and the SDSS-EDR with the MGC over the range 16 < B < 20 mag. We have also undertaken a photometric comparison to SuperCosmos (SCOS) and the Sloan Digital Sky Survey First Data Release (SDSS-DR1).
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Cross et al. (2004) studied this question.
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