MAORY, the Adaptive Optics Module for ELT
ELT (Extreme Large Telescope, see elt.eso.org for more info) is the world’s largest telescope under construction (39 m diameter) and it is considered worldwide to be one of the highest priorities in ground based astronomy. ELT will lead to a greater advancement of astrophysical knowledge, allow a deeper exploration of our Universe, and give sharper views of cosmic objects than ever before.
MAORY, as first generation ELT instrument, will help compensate for the distorsion of light caused by turbolence in the Earth’s atmosphere which make astronomical images blurry (Adaptive Optics, see here for more information on Adaptive Optics).
MAORY is built by a consortium of 3 institutes : INAF (7 Institutes in Italy) IPAG (Grenoble France) , NUIG (Galway , Ireland). INAF is the leader institute.
Coupled with MICADO, MAORY will enable ELT to perform diffraction limited near infrared observations. In imaging mode MAORY+MICADO will provide an option with a wide FoV (50.5 x 50.5 arcsec2) at pixel scale of 4 mas and a high resolution option with 1.5 mas pixel scale over 19×19 arcsec2. This will allow a major step forward, with a significant increase in spatial resolution with respect to HST and even JWST (pixel scale ~ 30mas/pix). Long slit spectroscopy will be covered with two settings: a short slit 0.84-1.48 μm, and a long slit from 1.48-2.46 μm.
The science cases for the MAORY+MICADO have been widely explored by the MAORY science team. A preliminary collection of the cases studied is reported in the MAORY science cases white book free available on the MAORY website.
The collected science cases address many of the major questions of astrophysics :
- Planetary systems including cases in our own Solar Systems , exoplanet and formation of planetary system
- Nearby stellar systems with stars and stellar systems within our own Galaxy and its satellite
- Local Universe with science cases aimed to study the stellar content and the structure of distant stellar systems that can be at least partially resolved into individual stars. In many cases they will fall within the range of resolved systems only thanks to the advent of MAORY+MICADO
- High-redshift Universe with the science cases addressing the formation of structures and cosmology using the formidable sensitivity and resolution of MAORY+MICADO to probe the very distant Universe and, consequently, the earliest phases of galaxy formation, as well as high energy phenomena over the range of cosmic distance and times made accessible by ELT.
Below we show a combination of real and simulated images selected from the MAORY White book, to illustrate the extreme capability and versatility of the coupled MAORY+MICADO.
A general overview of the MAORY architecture is shown below. The main hardware subsystems indicated in the figure are complemented by the electronic at system and sub-systems level, instrument control software and real time computer.
General overview of the MAORY instrument (thermal cover in transparency) installed on the Nasmyth platform with MICADO
MAORY @ INAF OAS
MAORY is the largest ground based astronomical project in INAF.
INAF OAS is strongly involved in the MAORY project. Several INAF OAS staff member are full time involved in the MAORY project, including the MAORY Principal Investigator and MAORY Project Manager. Moreover MAORY will be fully integrated and tested at INAF OAS (laboratories in CNR Area) before being shipped at Cerro Armazones in Chile’s Atacama Desert.