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  The 2dF-SDSS QSO survey (Croom+, 2009)
Post annotation
1.J/MNRAS/392/19/repeats2SLAQ spectroscopic catalogue of objects with repeated observations, built using version 1.2 (2008/10/01) (7065 rows)

Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  Name (char) IAU format object name (not identical to SDSS name) (;meta.main)
  z  2SLAQ spectroscopic redshift (src.redshift)
  q_ID  2SLAQ spectroscopic quality (ID quality) (meta.code.qual)
  q_z  2SLAQ spectroscopic quality (redshift quality) (meta.code.qual;src.redshift)
  ID (char) 2SLAQ spectroscopic ID (i.e. QSO, NELG, star etc.) (
  Date "Y:M:D" 2SLAQ spectroscopic observation date (YYMMDD) (time.epoch;obs)
  Fld (char) 2SLAQ spectroscopic field (obs.field)
  Fbr  2SLAQ spectroscopic fibre number (meta.note)
  S/N  2SLAQ spectroscopic S/N in a 4000-5000Å band (stat.snr)
  dmag mag (n) 2SLAQ (gm mag)-(fibre mag) relative to mean zero point in field (phot.mag)
  N  Number of observations for this object (meta.number)
  Com (char) 2SLAQ comment on spectrum (meta.note)

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