Spatial distribution of spurious detections in a partial region (∼50″ × 50″) of tile “d003”. The background is part of a deep SDI at Ks and the spurious detections are marked with red circles. We also mark the 2MASS sources that have J < 13.8 mag or H < 12.8 mag or Ks < 12.8 mag with cyan pluses.
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