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 Catalogue of 2700 double stars (Couteau, 1995)
Post annotation
1.I/209A/obsObservations of the double stars (8130 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)
  COU (char) COU designation, as in table "main" (;meta.main)
  Obs  Observation sequence number (
  Date a Observation date (time.epoch;obs)
  theta deg (n) Position angle (theta, in degrees) (999.99 when non existent) (pos.posAng)
  u_theta (char) ":" when theta is uncertain (meta.code.error;pos.posAng)
  l_rho (char) "<" refers to the separation (meta.code.error)
  rho arcsec (n) Separation (rho, in arcsec) (pos.angDistance)
  u_rho (char) ":" when the separation is unaccurate (meta.code.error)
  Aper1  (n) Instrument aperture (cm or inches depending on byte 50) (phys.angSize;instr.fov)
  Aper2  (n) aperture of the 2nd instrument (phys.angSize;instr.fov)
  inch (char) """ when the instrument size is given in inches (default: cm) (phys.angSize)
  Tflag (char) "T" when the instrument is a telescope (default: refractor) "N" when the instrument is a Teles. Newton (meta.note)
  iflag (char) [iops] flag defined as follows: "i" for an interferometric measurement "o" for occultation "p" for photographic "s" for spectrograph (meta.code)
  Nights  (n) Number of nights (meta.number)
  comma (char) "," when the number before refers only to theta (meta.number)
  Nrho  (n) Number of nights for rho (when different) (meta.number)
  Observer (char) Name of observer (when abbreviated, see table below) and comments (Note 1)   (;

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