24 July 2014 NAOMI: a new adaptive optics module for interferometry
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Abstract
The New Adaptive Optics Module for Interferometry (NAOMI)1 is the future low order adaptive optics system to be developed for and installed at the ESO 1.8 m Auxiliary Telescopes (ATs). The four ATs2 are designed for interferometry which they are essentially dedicated for. Currently the AT’s are equipped with a fast, visible tip-tilt sensor called STRAP3 (System for Tip/tilt Removal with Avalanche Photodiodes), and the corrections are applied through a tip-tilt mirror. The goal is to equip all four ATs with a low-order Shack-Hartmann system operating in the visible for the VLTI dual feed light beams in place of the current tip-tilt correction. Because of the limited size of the ATs (1.8m diameter), a low-order system will be sufficient. The goal is to concentrate the energy into a coherent core and to make the encircled energy (into the single mode fibers) stable and less dependent on the atmospheric conditions in order to increase the sensitivity of the interferometric instruments. The system will use the ESO real time computer platform Sparta-light as the baseline. This paper presents the preliminary design concept and outlines the benefits to current and future VLTI instruments.
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Emmanuel Aller-Carpentier, Emmanuel Aller-Carpentier, Reinhold Dorn, Reinhold Dorn, Francoise Delplancke-Stroebele, Francoise Delplancke-Stroebele, Jérome Paufique, Jérome Paufique, Luigi Andolfato, Luigi Andolfato, Christophe Dupuy, Christophe Dupuy, Enrico Fedrigo, Enrico Fedrigo, Philippe Gitton, Philippe Gitton, Paul Jolley, Paul Jolley, Paul Lilley, Paul Lilley, Miska Le Louarn, Miska Le Louarn, Than P. Duc, Than P. Duc, Andrew Rakich, Andrew Rakich, Javier Reyes, Javier Reyes, Robert Ridings, Robert Ridings, Julien Woillez, Julien Woillez, Enrico Marchetti, Enrico Marchetti, Marcos Suarez Valles, Marcos Suarez Valles, Christian Schmid, Christian Schmid, Norbert Hubin, Norbert Hubin, Jean-Philippe Berger, Jean-Philippe Berger, Jutta Quentin, Jutta Quentin, Bernard-Alexis Delabre, Bernard-Alexis Delabre, Stewart McLay, Stewart McLay, Luca Pasquini, Luca Pasquini, } "NAOMI: a new adaptive optics module for interferometry", Proc. SPIE 9146, Optical and Infrared Interferometry IV, 91461C (24 July 2014); doi: 10.1117/12.2054730; https://doi.org/10.1117/12.2054730
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