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ADONIS (ADaptive Optics Near Infrared System) is an upgrade ofthe C0ME-oN+ adaptive optics prototype. It will allow the astronomical community to use adaptive optics as a common user instrument. This paper describes the main features of the new system, including a mechanical and optical interface for specific visitor equipment and imaging capabilities. We present here the 128 x 128 infrared imaging camera, covering the 1-5 pm spectral range. Two interchangeable scales (35 and 100 milli-arcsec) can be selected to match the diffraction pattern respectively in J (1.25 pm) and L (3.6 pm) bands. A second imaging camera built by the Max-Planck-Institut fur Extraterrestrische Physik (Garching) covering the 1-2.5 pm region, is currently used by the European community for regular astronomical observations. The new real-time computer architecture and the associated control software are presented. It will allow the implementationofan open Artificial Intelligence software that will control the large number ofparameters such as bench configuration, infrared camera set-up, real-time computer initialization, telescope control system, seeing and meteo site sensor data acquisition and astronomical observing program organisation. In addition to its scientific use at La Silla, ADONIS will bring a substantial experience in optimizing the operation of an adaptive optics system, in particular in the VLT prospect. O-8194-/496-4/94/$6.OO SP1E Vol. 2201 Adaptive Optics in Astronomy (1994) / 955 Downloaded From: http://proceedings.spiedigitallibrary.org/ on 06/22/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx SPIE Vol. 2201 Adaptive Optics in Astronomy (1994) / 957 Downloaded From: http://proceedings.spiedigitallibrary.org/ on 06/22/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx

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