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J/ApJ/660/1428
 Astrometry around RX J0720.4-3125 (Kaplan+, 2007)
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img(gal)
1.J/ApJ/660/1428/table7ePSF position measurements for all exposures (1172 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)
  ID (char) Object identifier (Note G1)   (meta.id;meta.main)
  Exp (char) Exposure identifier (hrcNN) (meta.id;obs.exposure)
  DXpix pix Distortion-corrected X position (pos.cartesian.x;instr.det)
  e_DXpix pix Uncertainty in Xpix (stat.error)
  DYpix pix Distortion-corrected Y position (pos.cartesian.y;instr.det)
  e_DYpix pix Uncertainty in Ypix (stat.error)
  Num  Number of bad pixel and distance to nearest bad one (Note 1)   (meta.number)
  Rchi2  Reduced χ2 of the ePSF fit (stat.fit.chi2)
  Xpix pix Measured X position on chip (pos.cartesian.x;instr.det)
  e_Xpix pix Uncertainty in Xpix (stat.error;pos.cartesian.x)
  Ypix pix Measured Y position on chip (pos.cartesian.y;instr.det)
  e_Ypix pix Uncertainty in Ypix (stat.error;pos.cartesian.y)
  Amp  Amplitude of effective PSF (ePSF) (src.var.amplitude)
  e_Amp  Uncertainty in Amp (stat.error)
  Sky  Sky level (instr.skyLevel)
  e_Sky  Uncertainty in Sky (0 = fixed sky value) (stat.error)

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