我们介绍了类星体近类星体（QNQ）调查的结果，这是一个基于CCD的无狭缝光谱调查，在18个26.2 'x33.5'的视场上对1.7<z<3.6的V<22类星体进行了调查，这些视场集中在2.76<z 1.7的明亮类<4.69. In total 169 quasar candidates with emission lines were selected from the extracted flux-calibrated spectra on the basis of well-defined automatic selection criteria followed by visual inspection and verification. With follow-up spectroscopy of 81 candidates that were likely to reside at z>星体上，我们能够确认80个新的0.580<z 1.7的类星体<3.586 on 16 of our fields. 64 of the newly discovered quasars are located at z>。整体的高成功率意味着剩下的88个候选者中的大多数也是类星体，尽管根据观测到的线形和强度，它们中的大多数可能位于z<1.7。由于提取无缝光谱所需的输入源目录的深度不够，我们的调查没有很好地定义微弱的2.5<z<3.6类星体的极限星等，这些类星体的莱曼α发射在V=22之后很好地被检测到，尽管在连续S/N<1。虽然对于描述类星体的空间密度的演变没有用，但我们的样本提供了许多新的紧密间隔的类星体视线，这些视线围绕着深入研究的类星体，用于进一步研究星系际介质的三维分布。
英文摘要：
We present the results of the Quasars near Quasars (QNQ) survey, a CCD-based slitless spectroscopic survey for faint V<22 quasars at 1.7<z<3.6 on 18 26.2'x33.5' fields centred on bright quasars at 2.76<z<4.69. In total 169 quasar candidates with emission lines were selected from the extracted flux-calibrated spectra on the basis of well-defined automatic selection criteria followed by visual inspection and verification. With follow-up spectroscopy of 81 candidates that were likely to reside at z>1.7 we were able to confirm 80 new quasars at 0.580<z<3.586 on 16 of our fields. 64 of the newly discovered quasars are located at z>1.7. The overall high success rate implies that most of the remaining 88 candidates are quasars as well, although the majority of them likely resides at z<1.7 on the basis of the observed line shapes and strengths. Due to the insufficient depth of the input source catalogues needed for extraction of the slitless spectra our survey is not well defined in terms of limiting magnitude for faint 2.5<z<3.6 quasars whose Lyman alpha emission is detectable well beyond V=22, albeit at a continuum S/N<1. While not useful for characterising the evolving space density of quasars, our sample provides many new closely spaced quasar sightlines around intensely studied quasars for further investigations on the three-dimensional distribution of the intergalactic medium.
