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II/271A
  TASS Mark IV patches photometric catalog, version 2 (Droege+, 2007) Version 2 corrects a systematic error in photometry as function of Declination
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img(gal)
1.II/271A/patch2*Properties of objects detected repeatedly during the Mark IV survey of northern sky (V.2) (Note) (4353670 rows)

 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  TASS4  (i) Index in Mark IV engineering database (meta.id;meta.main)
  o_TASS4  Number of good (V,I) measurement pairs (meta.number)
  RAJ2000 deg (i) Mean Right Ascension (J2000.0) (pos.eq.ra;meta.main)
  e_RAJ2000 deg Standard deviation from mean RA position (stat.error;pos.eq.ra)
  DEJ2000 deg (i) Mean Declination (J2000.0) (pos.eq.dec;meta.main)
  e_DEJ2000 deg Standard deviation from mean Dec position (stat.error;pos.eq.dec)
  Vmag mag Interquartile mean of all V-band measurements (Note 5)   (phot.mag;em.opt.V)
  e_Vmag mag Standard deviation from interquartile mean V (stat.error;phot.mag;em.opt.V)
  eVmag mag Standard deviation from mean V value in ensemble analysis of local patch (Note 1)   (stat.stdev;phot.mag;em.opt.V)
  Imag mag Interquartile mean of all I-band measurements (Note 5)   (phot.mag;em.opt.I;stat.mean)
  e_Imag mag Standard deviation from interquartile mean I (stat.error;phot.mag;em.opt.I)
  eImag mag Standard deviation from mean I value in ensemble analysis of local patch (Note 1)   (stat.stdev;phot.mag;em.opt.I)
  dVmag  Normalized measure of deviation from mean V magnitude in ensemble analysis (Note 2)   (stat.variance)
  dImag  Normalized measure of deviation from mean I magnitude in ensemble analysis (Note 2)   (stat.variance)
  WS  (i) Welch-Stetson variability index (Note 3)   (meta.code;src.var.index)
  Proxy  Proximity code (Note 4)   (meta.code)
  Env  Environment when nearby star(s) exist within 1arcmin (meta.ref.url)

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