A spectroscopic survey for strong galaxy-galaxy lenses
  We present a spectroscopic survey for strong galaxy-galaxy lenses. Exploiting optimal sight-lines to massive, bulge-dominated galaxies at redshifts $z \sim 0.4$ with wide-field, multifibre spectroscopy, we anticipate the detection of 10-20 lensed Lyman-$\alpha$ emitting galaxies at redshifts $z \simgreat 3$ from a sample of 2000 deflectors. Initial spectroscopic observations are described and the prospects for constraining the emission-line luminosity function of the Lyman-$\alpha$ emitting population are outlined. 
J. P. Willis (1 and 2), P. C. Hewett (1), S. J. Warren (3) and G. F.   Lewis (4) ((1) IoA, Cambridge, (2) PUC, Chile, (3) Im...