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Faint Quasar Surveys

Faint quasar surveys are necessary complements to bright quasar surveys to remove the degeneracy between redshift and luminos-ity inherent in any single magnitude-limited sample. I discuss two ongoing surveys for faint quasars at 3.3 < z < 5 and 5 < z < 6 using imaging data from the Big Throughput Camera on the CTIO 4-m. I also discuss a sample of faint spectroscopically selected AGN with z < 4.7 found serendip-itously in the CNOC2 Field Galaxy Redshift Survey. Faint quasars at 2 < z < 3.5 from this sample, when combined with literature data on more luminous quasars at the same z, show evidence for a much weaker Baldwin Effect in C iv λ1549 and Lyα than previously seen at z < 1.5. This may imply that the slopes of the Baldwin Effect for these transitions evolve with redshift, steepening with cosmic time. Finally I discuss the prospects for extending faint quasar surveys to z ∼ 7 using near-IR followup of very red objects in the Red-Sequence Cluster Survey.