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In this paper we present the status of the Armazones Instrumentation Programme for ESO’s Extremely Large Telescope (ELT). While the ELT Construction Programme includes the first-generation instruments (MICADO, MAORY, HARMONI and METIS), the Armazones Programme covers the development of all future instrumentation for the ELT. As part of this Programme we have already completed 2 Phase-A studies for a high-resolution spectrograph (HIRES) and a multi-object spectrograph (MOSAIC). In this paper we report the status of the Programme, the complementarity of these new instruments with the ones already in construction, and the roadmap for future developments.

In this paper we will give an overview of the status of the three instruments and one adaptive optics module that are currently under construction for the European Southern Observatory (ESO) Extremely Large Telescope (ELT). Currently three of those instruments are in the final design stages and the adaptive optics module, MAORY, is rapidly approaching its Preliminary Design Review (PDR). Funding for the laser tomographic module for HARMONI has been secured and that module is now included as part of that overall instrument project. The PDR phase of the instruments has strongly highlighted the ambitious nature of these and all 30-m class instrument projects. Scientifically, managerially and technically, the step up from the 8-m class is challenging. This paper will provide an introduction to all these instruments and will highlight some of the important developments required to realise them.

The ESO’s Extremely Large Telescope (ELT), which green light for construction was given back in December 2014, is now progressing at full speed in its final design and manufacturing stage with only very few procurements remaining to be placed. The construction of the Dome and Main Structure foundations at Cerro Armazones in Chile is well advanced and hardware produced though more than 30 industrial contracts (mostly in Europe) has started to come out of the factories. The four first generation instruments and adaptive optics module are also progressing now towards their final design. Tremendous progress has also been made in gradually incorporating most of the items that were originally deferred to a Phase 2 due to lack of funding. A number of difficulties are encountered, the current COVID-19 pandemic being one of them affecting activities both in Europe and in Chile and putting at risk the target for first light date currently set to end 2025.

The ESO Extremely Large Telescope (ELT) has been in construction since 2014. In parallel with the construction of the telescope, ESO has entered into agreements with consortia in the ESO member states to build the first instruments for that telescope. To meet the telescope science goals, the ambitious instrument plan includes two instruments for first light: an optical to near-infrared integral field spectrograph with a dedicated adaptive optics system (HARMONI) and a near-infrared camera with simple spectrograph (MICADO) behind a multi-conjugate adaptive optics module (MAORY). The next instrument will be a mid-infrared imager and spectrograph (METIS). Plans to follow this first suite of instruments include a high-resolution spectrograph (HIRES) and a multi-object spectrograph (MOSAIC). Technology development is underway to prepare for building the ELT Planetary Camera and Spectrograph. An overview of the telescope and its instruments is given.

In this paper we will report on the status of the instrumentation project for the European Southern Observatory's Extremely Large Telescope (ELT). Three instruments are in the construction phase: HARMONI, MICADO and METIS. The multi-conjugate adaptive optics system for MICADO, MAORY, is also under development. Preliminary Design Reviews of all of these systems are planned to be completed by mid-2019. The construction of a laser tomographic module for HARMONI is part of "Phase 2" of the ELT: the design has been advanced to Preliminary Design level in order to define the interface to the HARMONI spectrograph. Preparations for the next instruments have also been proceeding in parallel with the development of these instruments. Conceptual design studies for the multi-object spectrograph MOSAIC, and for the high resolution spectrograph HIRES have been completed and reviewed. We present the current design of each of these instruments and will summarise the work ongoing at ESO related to their development.

ESO is now fully engaged in building the European Extremely Large Telescope (E-ELT), a 40-m class optical nearinfrared telescope to be installed on top of Cerro Armazones, Chile and become operational around 2025. The Programme was formally approved by ESO Council back in 2012. However the required funding level for starting construction was actually reached in 2014, leading to a Green Light to start large construction contracts in December of that year. Since then, the programme has entered a very busy phase leading to the signature of the first major industrial contracts as well as the agreements with scientific institutes in ESO Member States to design and built the first suite of science instruments. This paper summarizes the current status of the E-ELT Programme and presents some aspects related to scientific objectives, managerial organization, programmatic aspects and system engineering approach. It also outlines the procurement strategies put in place to achieve the goal of the Programme: building the 'world's biggest eye on the sky' within the next decade.

The European Extremely Large Telescope is a project of the European Southern Observatory to build and operate a 40-m class optical near-infrared telescope. The telescope design effort is largely concluded and construction contracts are being placed with industry and academic/research institutes for the various components. The siting of the telescope in Northern Chile close to the Paranal site allows for an integrated operation of the facility providing significant economies. The progress of the project in various areas is presented in this paper and references to other papers at this SPIE meeting are made.