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J/A+A/371/L5
  CCD Δa-photometry of NGC 1866 (Maitzen+, 2001)
Post annotation
  
1.J/A+A/371/L5/table1Observed program stars within 1.5' of NGC 1866 (301 rows)
2.J/A+A/371/L5/table2Observed program stars in the surrounding of NGC 1866 (1678 rows)

 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
   (ALL)Seq  Notation for stars sorted after X and Y (meta.id)
   (ALL)TFC  (n) Notation according to Testa et al. (1999, Cat. J/AJ/118/2839)
   (ALL)Xpos pix X-coordinate (1pix=0.813") (pos.cartesian.x;instr.det)
   (ALL)Ypos pix Y-coordinate (1pix=0.813") (pos.cartesian.y;instr.det)
   (ALL)g1-y mag Mean (g1-y) index (Note 1)   (phot.color)
   (ALL)e_g1-y mag rms uncertainty on (g1-y) (stat.error)
   (ALL)a mag Mean a index (a = g2 - [(g1+y)/2]) (Note 1)   (phot.color)
   (ALL)e_a mag rms uncertainty on a (stat.error)
   (ALL)Deltaa mag Deviation from cluster line (Note 2)   (phot.mag;arith.diff)
   (ALL)ymag mag Mean y value (Note 1)   (phot.mag;em.opt.V)

ALL cols
    
(n) indicates a possible blank or NULL column(i)indexed column
   (ALL)e_ymag mag rms uncertainty on ymag (stat.error)
   (ALL)N  Number of measurements (meta.number)

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