The Multi-Conjugate Adaptive Techniques Test Optics (MATTO) is an innovative wide-field adaptive optics (AO) test bench currently in development at the Astronomical Observatory of Padova. This facility is strategically designed to explore and advance Multi-Conjugate Adaptive Optics (MCAO) techniques under diverse conditions. With a forward-looking perspective, MATTO is engineered for flexibility, featuring independently configurable modules.

The first module reproduces reference sources, incorporating opto-mechanical groups to generate atmosphere-perturbed beams. This module can reproduce both natural and artificial references, encompassing distinct light spectra and asterisms. A second module combines light from these references, emulating the beam geometry in the lower atmosphere and the light collection from a telescope. The MCAO correction module implements a range of compensation schemes through the integration of three large deformable mirrors (DMs), enabling conjugation at various atmospheric altitudes. Lastly, a sensing module provides versatility by simulating a diverse array of wavefront sensors, encompassing both pupil plane and focal plane techniques, while also mimicking optical phase modifiers such as roof and pyramid configurations. The overall setup is highly flexible, facilitating the placement of sensing and perturbing elements in different optical positions and ensuring adaptability for future proof-of-concept studies and advancements in AO techniques. The latest opto-mechanical design of the bench is presented in this paper, providing details on the accessible parameter space and the simulation capabilities.