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We introduce a new survey of massive stars in the Galaxy and the MagellanicClouds using the Fibre Large Array Multi-Element Spectrograph (FLAMES)instrument at the Very Large Telescope (VLT). Here we present observations of269 Galactic stars with the FLAMES-Giraffe Spectrograph (R ~ 25,000), in fieldscentered on the open clusters NGC 3293, NGC 4755 and NGC 6611. These data aresupplemented by a further 50 targets observed with the Fibre-Fed Extended RangeOptical Spectrograph (FEROS, R = 48,000). Following a description of ourscientific motivations and target selection criteria, the data reductionmethods are described; of critical importance the FLAMES reduction pipeline isfound to yield spectra that are in excellent agreement with less automatedmethods. Spectral classifications and radial velocity measurements arepresented for each star, with particular attention paid to morphologicalpeculiarities and evidence of binarity. These observations represent asignificant increase in the known spectral content of NGC 3293 and NGC 4755,and will serve as standards against which our subsequent FLAMES observations inthe Magellanic Clouds will be compared.

The VLT-FLAMES survey of massive stars: Observations in the Galactic clusters NGC 3293, NGC 4755 and NGC 6611