OGLE Monitoring of QSO 2237+0305 (Huchra's lens)

• Click here for 250" x 500" V-band multi-exposure average frame, available also in FITS format and Postscript).
  
  
  

• Light curves

  

  Light curves can be also obtained in Post Script format in magnitudes and in milli Janskys
  
  

• Photometry data file containing 11 columns: UT date, Hel.JD - 2450000, FWHM ("), V magnitude and magnitude error for components A-D. The last seasons data are preliminary and subject to minor revisions. Points marked with ":" were obtained during bright sky or imperfect weather. The statistical quality of the zero point is 2, 3, 8 and 13 % for A, B, C, and D components, therefore worse than the relative flux differences. See paper for further explanation.

• Flux densities in milli Janskys are obtained with the following formula: $f$_V = 3.67x10^{(-0.4 m_V + 6)}. Amplitudes of the microlensing events are free of the zero point uncertainties on linear scale.

PLEASE cite the following paper(s) when using the data or referring to these OGLE results: Wozniak et al. (2000), Ap.J., 529, 88 or Wozniak et al. (2000), Ap.J., 540, L65.

Przemyslaw Wozniak, Princeton University Observatory, Peyton Hall, Princeton, NJ 08540

Questions should be directed to wozniak@astro.princeton.edu