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J/A+A/412/721
  CCD Δa-photometry of 5 open clusters (Paunzen+, 2003)
Post annotation
  
1.J/A+A/412/721/table8Observed program stars of NGC 6756 (65 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)
  Seq  Notation for stars sorted after X and Y (meta.id)
  WEBDA  (n) Notation according to WEBDA (meta.id)
  Xpos pix X-coordinate on CCD (pos.cartesian.x;instr.det)
  Ypos pix Y-coordinate on CCD (pos.cartesian.y;instr.det)
  Vmag mag Mean V value (phot.mag;em.opt.V)
  a mag (n) Mean a index (a = g2 - [(g1+y)/2]) (phot.color;arith.diff)
  e_a mag (n) Sigma a (stat.error)
  g1-y mag Mean (g1-y) index (phot.color;arith.diff)
  e_g1-y mag Sigma (g1-y) (stat.error)
  da(g1-y) mag (n) Deviation from cluster line (Δa) (phot.color;arith.diff)
  b-y mag (n) (b-y) from the literature (phot.color;em.opt.B;em.opt.V)
  da(b-y) mag (n) Deviation from cluster line (Δa) (stat.stdev)
  Obs  Number of observations (meta.number)

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(n) indicates a possible blank or NULL column(i)indexed column
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