Roberto Ragazzoni

TL;DR: In this paper, a set of corona-graphic masks were tested, and the best performing configurations for the instrument: the Gaussian-Lyot coronagraph, a Shaped Pupil (SP) with 360° of discovery space and two SP masks with asymmetric detection area but with a small inner working angle and the Four Quadrant phase mask.

TL;DR: The VLT Survey Telescope (VST) is the latest telescope installed at ESO's Paranal Observatory in northern Chile as mentioned in this paper, and the control strategy and the results obtained during the commissioning of the telescope are described in detail.

TL;DR: In this article , the authors report the main steps that drove SHARK-NIR to become a real instrument with laboratory validated performances and the upcoming path towards commissioning, focusing on the coordination, interfaces and interactions of all the different involved fields, expertise and institutes of the consortium as well as of the hosting telescope.

TL;DR: For almost two decades significant improvements have been made in the area of efficient wavefront sensing to compensate areas in the sky of larger size and with better achieved quality as mentioned in this paper, some of them become possible because of the development of new technologies, because of availability of new kind of telescopes or because of new concepts.

TL;DR: This paper mainly focuses on the telescope control software, which is in charge of the real-time control of the hardware and of the overall coordination of the operations, including pointing and tracking, active optics and presets.