NAOS: from an AO system to an astronomical instrument

Francois Lacombe; Gerard Zins; Julien Charton; G. Chauvin; Guillaume Dumont; Philippe Feautrier; Thierry Fusco; Eric Gendron; Norbert N. Hubin; Pierre Y. Kern; Anne-Marie Lagrange; David Mouillet; Pascal Puget; Didier Rabaud; Patrick Rabou; Gerard Rousset; Jean-Luc Beuzit

doi:10.1117/12.459739

7 February 2003 NAOS: from an AO system to an astronomical instrument

Francois Lacombe, Gerard Zins, Julien Charton, G. Chauvin, Guillaume Dumont, Philippe Feautrier, Thierry Fusco, Eric Gendron, Norbert N. Hubin, Pierre Y. Kern, Anne-Marie Lagrange, David Mouillet, Pascal Puget, Didier Rabaud, Patrick Rabou, Gerard Rousset, Jean-Luc Beuzit

Author Affiliations +

Proceedings Volume 4839, Adaptive Optical System Technologies II; (2003) https://doi.org/10.1117/12.459739
Event: Astronomical Telescopes and Instrumentation, 2002, Waikoloa, Hawai'i, United States

Abstract

Observing at high angular resolution from the ground is not made possible with Adaptive Optics alone, and besides the turbulence residuals, atmospheric refraction, thermal background or instrument's mechanical flexures may also severely limit the gain of optical quality that AO techniques are supposed to provide. We describe here how NAOS, the newly installed AO system on the VLT, has been designed to accommodate for these unavoidable effects. In particular, beam chopping, flexures compensation and AO tracking on reference objects with a significant relative motion will be addressed. It will thus be shown how long term astronomical observations at the diffraction limit can be carried out with an AO system under regular ground level conditions, thanks to the implementation of original technical solutions.

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Francois Lacombe, Gerard Zins, Julien Charton, G. Chauvin, Guillaume Dumont, Philippe Feautrier, Thierry Fusco, Eric Gendron, Norbert N. Hubin, Pierre Y. Kern, Anne-Marie Lagrange, David Mouillet, Pascal Puget, Didier Rabaud, Patrick Rabou, Gerard Rousset, and Jean-Luc Beuzit "NAOS: from an AO system to an astronomical instrument", Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); https://doi.org/10.1117/12.459739

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