Context. The tip-tilt stabilisation system of the 1.8 m Auxiliary Telescopes of the Very Large Telescope Interferometer was never dimensioned for robust fringe tracking, except when atmospheric seeing conditions are excellent. <BR /> Aims: Increasing the level of wavefront correction at the telescopes is expected to improve the coupling into the single-mode fibres of the instruments, and enable robust fringe tracking even in degraded conditions. <BR /> Methods: We deployed a new adaptive optics module for interferometry (NAOMI) on the Auxiliary Telescopes. <BR /> Results: We present its design, performance, and effect on the observations that are carried out with the interferometric instruments.
Woillez, J.;Abad, J. A.;Abuter, R.;Aller Carpentier, E.;Alonso, J.;Andolfato, L.;Barriga, P.;Berger, J. -P.;Beuzit, J. -L.;Bonnet, H.;Bourdarot, G.;Bourget, P.;Brast, R.;Caniguante, L.;Cottalorda, E.;Darré, P.;Delabre, B.;Delboulbé, A.;Delplancke-Ströbele, F.;Dembet, R.;Donaldson, R.;Dorn, R.;Dupeyron, J.;Dupuy, C.;Egner, S.;Eisenhauer, F.;Fischer, G.;Frank, C.;Fuenteseca, E.;Gitton, P.;Gonté, F.;Guerlet, T.;Guieu, S.;Gutierrez, P.;Haguenauer, P.;Haimerl, A.;Haubois, X.;Heritier, C.;Huber, S.;Hubin, N.;Jolley, P.;Jocou, L.;Kirchbauer, J. -P.;Kolb, J.;Kosmalski, J.;Krempl, P.;Le Bouquin, J. -B.;Le Louarn, M.;Lilley, P.;Lopez, B.;Magnard, Y.;Mclay, S.;Meilland, A.;Meister, A.;Merand, A.;Moulin, T.;Pasquini, L.;Paufique, J.;Percheron, I.;Pettazzi, L.;Pfuhl, O.;Phan, D.;Pirani, W.;Quentin, J.;Rakich, A.;Ridings, R.;Riedel, M.;Reyes, J.;Rochat, S.;Santos Tomás, G.;Schmid, C.;Schuhler, N.;Shchekaturov, P.;Seidel, M.;Soenke, C.;Stadler, E.;Stephan, C.;Suárez, M.;Todorovic, M.;Valdes, G.;Verinaud, C.;Zins, G.;& Zúñiga-Fernández, S., 2019, 