Mortlock, Daniel JDaniel JMortlockDrinkwater, Michael JMichael JDrinkwater2019-09-192019-09-192001-03-07Publications of the Astronomical Society of Australia, 2001, 18 (2), pp.195-1971323-3580http://hdl.handle.net/10044/1/73482It is possible to detect gravitationally-lensed quasars spectroscopically if the spectra obtained during galaxy surveys are searched for the presence of quasar emission lines. The up-coming 6 degree Field (6dF) redshift survey on the United Kingdom Schmidt Telescope will involve obtaining ~105 spectra of near-infrared selected galaxies to a magnitude limit of K = 13. Applying previously developed techniques implies that at least one lens should be discovered in the 6dF survey, but that as many as ten could be found if quasars typically have B J – K ~ 8. In this model there could be up to fifty lensed quasars in the sample, but most of them could only be detected by infrared spectroscopy.© 2001 Cambridge University Press. This paper has been accepted for publication and will appear in a revised form, subsequent to peer-review and/or editorial input by Cambridge University Press.astro-phastro-phAstronomy & Astrophysics0201 Astronomical and Space Sciences0299 Other Physical SciencesJournal Articlehttps://www.dx.doi.org/10.1071/as010231448-6083