The MCAO Assisted Visible Imager and Spectrograph (MAVIS) is a new instrument being built for the ESO’s Very Large Telescope (VLT). It will operate at the Nasmyth focus of “UT4” telescope and it is composed of two main parts: a Multi - Conjugate Adaptive Optics (MCAO) module and two post focal scientific channels, an imager and an integral field spectrograph, both operating in the visible spectrum. The project is approaching the final steps of the preliminary design phase and it is expected to have the first light in 2027. We present the status of the Instrument Control Software (ICSS). In particular, we focus on the software architecture and the interaction between ICSS and real-time computer (RTC), telescope control system (TCS) and VLT Laser Guide Stars Facility (4LGSF). Besides the complexity of the instrument, we present a software architecture that is simple and still maintains modularity, guaranteeing the overall functionality of the instrument.
MAVIS (the MCAO Assisted Visible Imager & Spectrograph) will be driven by a high performance real-time control (RTC) system relying on cutting edge hardware and software technologies, including the hard real-time pipeline as well as the supervisory and tightly coupled telemetry sub-systems. To meet the extremely challenging requirements of a complex instrument like MAVIS, this forward looking implementation of the COSMIC platform is designed to support, end-to-end, a wide range of control schemes, from classical model-based approaches up to modern data-driven methodologies. In this paper, we will review the design and prototyping activities being led during phase B of the project.
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