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  A Catalogue of observations in H alpha (Ducati, 1981)
Post annotation
1.II/66/obsPublished measurements (4095 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)
  HD  (n) Star identification, usually HD (
  m_HD (char) HD suffix (/3,/0, A, B, etc.) (meta.code.multip)
  ID (char) Alternate designation (
  Sp (char) Spectral type from original reference (src.spType)
  Vmag mag (n) Visual magnitude if provided (phot.mag;em.opt.V)
  Ha mag (n) H alpha measurement (spect.index)
  u_Ha (char) Uncertainty code for H alpha (meta.code.error)
  e_Ha mag (n) Mean error of H alpha measurement (stat.error)
  x_Ha (char) Method of measurement of Ha (Note)   (meta.unit)
  o_Ha  (n) Number of observations or weight (meta.number)
  w_wt  (n) Weight of weight (stat.weight)
  rem  (n) [1,6] Coded remarks (Note)   (meta.note)
  ref   [1/37] Reference number (file refs.dat) (meta.ref)

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