QSO 2237+0305 VR Light Curves from Gravitational LensES International Time Project Optical Monitoring
We present VR observations of QSO 2237+0305 conducted by the Gravitational Lensing International Time Project collaboration from 1999 October 1 to 2000 February 3. The observations were made with the 2.56 m Nordic Optical Telescope at Roque de los Muchachos Observatory, La Palma (Spain). The point-spread function (PSF) fitting method and an adapted
Alcalde, D. et al.
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2002