Robotic Monitoring of Gravitationally Lensed Quasars

<table>LRT light curves of QSO 0957 + 561A from October 2005 to June 2007. The <i>r</i>-band (red triangles) and <i>g</i>-band (green circles) curves are compared with each other. To make the comparison easier, the <i>r</i>-band magnitudes are shifted by +0.229 mag.</table>

Advances in Astronomy

fig3

Figure 3

Figure 3: Robotic Monitoring of Gravitationally Lensed Quasars 