4 August 2016 The 2nd generation VLTI path to performance
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Abstract
The upgrade of the VLTI infrastructure for the 2nd generation instruments is now complete with the transformation of the laboratory, and installation of star separators on both the 1.8-m Auxiliary Telescopes (ATs) and the 8-m Unit Telescopes (UTs). The Gravity fringe tracker has had a full semester of commissioning on the ATs, and a first look at the UTs. The CIAO infrared wavefront sensor is about to demonstrate its performance relative to the visible wavefront sensor MACAO. First astrometric measurements on the ATs and astrometric qualification of the UTs are on-going. Now is a good time to revisit the performance roadmap for VLTI that was initiated in 2014, which aimed at coherently driving the developments of the interferometer, and especially its performance, in support to the new generation of instruments: Gravity and MATISSE.
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Julien Woillez, Jaime Alonso, Jean-Philippe Berger, Henri Bonnet, Willem-Jan de Wit, Sebastian Egner, Frank Eisenhauer, Frédéric Gonté, Sylvain Guieu, Pierre Haguenauer, Antoine Mérand, Lorenzo Pettazzi, Sébastien Poupar, Markus Schöller, Nicolas Schuhler, "The 2nd generation VLTI path to performance", Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 990706 (4 August 2016); doi: 10.1117/12.2233971; https://doi.org/10.1117/12.2233971
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