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


Equatorial coordinates of QSO 2237+0305:
RA (J2000.0) 22:40:30.27   Dec (J2000.0) 03:21:31.0

Most recent OGLE-III light curve of QSO 2237+0305 (2001-....):

OGLE-III light curve of QSO 2237+0305 can be also obtained in Postscript format from the OGLE Internet Archive.

OGLE-III photometry of QSO 2237+0305 is available from the OGLE Internet archive. Data files contain photometry of all components of the Huchra's lens (A-D) and two comparison stars. See README file.

Photometry of QSO 2237+0305 was obtained with image subtraction technique - based in large part on DIA implementation of this technique by Wozniak (2000).

After the 2006 observing season the OGLE-III data of QSO 2237+0305 were calibrated and tied to the same photometric scale as OGLE-II photometry of this object. Thus, OGLE-II and OGLE-III photometry constitue now a homogeneous data set starting in 1997.

OGLE-II monitoring of QSO 2237+0305 in 1997-2000.

Last updated on: Sun May 3 22:10:42 CEST 2009

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