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The aim of this paper is to present the first data set obtained with SOARAdaptive Module-Fabry-Parot (SAM-FP), a Fabry-Perot instrument mounted insidethe SOAR telescope Adaptive-Optics Module. This is the only existing imagingFabry-Perot interferometer using laser-assisted ground-layer adaptive optics.SAM-FP was used to observe the ionized gas, traced by Halpha, in the centre ofthe 30 Doradus starburst (the Tarantula Nebula) in the Large Magellanic Cloud,with high spatial (~0.6" or 0.15 pc) and spectral (R=11200) resolution. Radialvelocity, velocity dispersion and monochromatic maps were derived. The regiondisplays a mix of narrow, sigma ~ 20 km/s profiles and multiple broaderprofiles with sigma ~ 70-80 km/s, indicating the complex nature of the nebulakinematics. A comparison with previously obtained VLT/FLAMES spectroscopydemonstrates that the data agree well in the regions of overlap, but theFabry-Perot data are superior in spatial coverage. A preliminary analysis ofthe observations finds a new expanding bubble south of R136, with a projectedradius of r=5.6 pc and an expansion velocity of 29 +/- 4 km/s. In addition, thefirst-time detailed kinematic maps derived here for several complexes andfilaments of 30 Doradus allow identification of kinematically independentstructures. These data exemplify the power of the combination of a high-orderFabry-Perot with a wide-field imager (3' x 3' GLAO-corrected field of view) forhigh-resolution spatial and spectral studies. In particular, SAM-FP data cubesare highly advantageous over multifibre or long-slit data sets for nebulastructure studies and to search for small-scale bubbles, given their greatlyimproved spatial coverage. For reference, this paper also presents twoappendices with detailed descriptions of the usage of Fabry-Perot devices,including formulae and explanations for understanding Fabry-Perot observations.

First results from SAM-FP: Fabry-Perot observations with ground-layer adaptive optics - the structure and kinematics of the core of 30 Doradus