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Table 1

Celestial coordinates, redshift, BH mass, and zAB magnitude of the four quasars (from De Rosa et al. 2011).

Field RA (J2000) Dec (J2000) z M BH z SDSS
[109M] [AB mag]

J1030 10:30:27.1 +05:24:55 6.28 1.4 20.0
J1148 11:48:16.1 +52:51:50 6.41 4.9 20.1
J1048 10:48:45.5 +46:37:18 6.20 3.9 19.9
J1411 14:11:11.3 +12:17:37 5.95 1.0 19.6

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