describes how candidate ELGs were identified and presents details on the detections, as well as considering the possible sources of mis-identified ‘interloper’ objects. Section \[sec:properties\] analyses the distribution and properties of the sample. Our conclusions are summarised in Section \[sec:conclusion\]. Throughout, we assume an $H_0 = 70$ km s$^{-1}$ Mpc$^{-3}$, $\Omega_{\Lambda} = 0.7$, $\Omega_{\mathrm{M}} = 0.3$ cosmology.

Observations {#sec:obs}
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Target selection
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Two data sources were used for this analysis. The authors used TTF to observe objects drawn from the Molonglo Quasar Sample [MQS; @Kapahi98] of low-frequency-selected radio-loud quasars in July 2003. Six targets had been selected from the MQS on the basis of observability, suitable redshifts being limited by the necessity to place Lyman $\alpha$ within the wavelength ranges accessible to TTF’s order-blocking filters. Due to weather constraints, only two quasars were observed: MRC B1256-243 ($z = 2.263$) and MRC B2158-206 ($z =
2.249$). Immediately following each quasar observation, a standard star was observed with the same instrumental settings for flux calibration. In addition, observations of BR B0019-1522, a $z = 4.528$ radio-quiet quasar, were drawn from the Anglo-Australian Observatory archive. These data were taken on 1997 November 6 by Bland-Hawthorn, Boyle and Glazebrook, and were accompanied by 