With
high and homogeneous
image quality (the mean seeing in the g band is 0.78 arcsec), and reaching limiting magnitudes of around 25 across the ugriz filter set, this survey has
yielded several dozen new gravitational lenses on both galaxy and group scales (Cabanac et al. 2007; More et al. 2012; Sonnenfeld et al. 2013; Gavazzi et al. 2014).