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The large number of ongoing surveys for pulsars and transients at variousradio observatories is motivated by the science obtained from these sources.Timing and polarisation analysis of relativistic binaries can place strongconstraints on theories of gravity. The observation of a growing number ofmillisecond pulsars (MSPs) spread over the celestial sphere may allow thedetection of a stochastic gravitational wave background arising fromsupermassive black hole binaries. A more complete sample of young pulsarsimproves our knowledge of neutron star birth and evolution. Transients such asfast radio bursts can serve to probe the intergalactic medium. The SPAN512pulsar survey covers intermediate Galactic latitudes using the L-band receiverof the Nan\c{c}ay Radio Telescope (NRT). The survey covers 224 sq. deg. of thesky for a total exposure time of 2200 h. Population syntheses predict thediscovery of 3 to 19 new normal pulsars and a few MSPs. We present detailedmodelling of the NRT beam with its L-band receiver and its sensitivity which weused to precisely assess the expected survey yield. We used the flexible PulsarArecibo L-band Feed Array data processing pipeline to search the 47 TB ofSPAN512 data for pulsars and transients. The SPAN512 survey discovered two newMSPs and one new middle-aged pulsar. We focus on the analysis of the 2.4-msspin period pulsar J2205+6012 for which we also report the detection ofgamma-ray pulsations. Its narrow pulse width (35 $\mu$s at an observingfrequency of 2.55 GHz) allows for sub-microsecond timing precision over 8years, with exciting prospects for pulsar timing array programs.

The SPAN512 mid-latitude pulsar survey at the Nan\c{c}ay Radio Telescope