7 February 2003 Implementation of MACAO for SINFONI at the VLT, in NGS and LGS modes
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Abstract
The European Southern Observatory (ESO) and the Max Planck Institut fur extraterrestrische Physik (MPE) are jointly developing SINFONI, an Adaptive Optics (AO) assisted Near Infrared Integral Field Spectrometer, which will be installed in the first quarter of 2004 at the Cassegrain focus of YEPUN (VLT UT4). The Adaptive Optics Module, a clone of MACAO, designed and built by ESO, is based on a 60 elements curvature system. It feeds the 3D spectrograph, SPIFFI, designed and built by MPE, with higher than 50% K band Strehl for bright (V<12) on-axis Natural Guide Stars (NGS) and less than 35 mas/hour image motion. The AO-Module will be the first curvature AO system operated in Laser Guide Star (LGS) mode, using a STRAP system for the tip/tilt sensing. The Strehl performance in the LGS mode is expected to be better than 30% in K band.
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Henri Bonnet, Stefan Strobele, Fabio Biancat-Marchet, Joar Brynnel, Ralf D. Conzelmann, Bernard Delabre, Robert Donaldson, Jacopo Farinato, Enrico Fedrigo, Norbert N. Hubin, Markus E. Kasper, Markus Kissler-Patig, "Implementation of MACAO for SINFONI at the VLT, in NGS and LGS modes", Proc. SPIE 4839, Adaptive Optical System Technologies II, (7 February 2003); doi: 10.1117/12.457060; https://doi.org/10.1117/12.457060
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