We describe survey techniques and initial results for a 0.69 deg^2^ CCD multicolor survey for quasars at z > 4. The original motivation for the survey was to detect quasar clustering at high redshift in order to constrain theories of structure formation at early stages in the history of the universe. Therefore, the majority of data reported here are centered on fields containing known z > 4 quasars and a few are centered on blank control fields. We have selected a complete rigorously defined sample of 39 quasar candidates and have examined seven of these spectroscopically, confirming none as high-redshift quasars. However, we have surveyed enough area to constrain the z > 4 quasar luminosity function at M_B_ < 24.0^m^ and find that limiting quasar space densities show a decrease in the apparent number of objects from z =2. In the course of the survey, we were also able to recover three quasars at z >4 discovered by Irwin, McMahon, & Hazard but not fully documented in the literature. These objects are reported here as well. Finally, we discuss the future prospects for detecting quasar clustering at high redshift using these survey techniques.
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Kennefick et al. (1996) studied this question.