28-30 October 2019
Firenze, Palazzo dei Congressi
Europe/Rome timezone

Automatic Beam Stabilization for SHARK-VIS

29 Oct 2019, 17:00
Firenze, Palazzo dei Congressi

Firenze, Palazzo dei Congressi

piazza Adua 1


Massimiliano Mattioli (Istituto Nazionale di Astrofisica (INAF))


The results obtained from the first SHARK-VIS forerunner experiment have clearly shown that, despite the very good performances reached by the extreme-AO system of LBT, a beam stabilization system is required in order to reduce the residual jitter at the instrument, which is mandatory to improve image contrast in long exposure and coronagraphic observations. Driven by this requirement we developed a closed loop system, called Automatic Beam Stabilization (ABS), that runs at a frequency of up to 1 kHz. The ABS is based on a reactive piezo tip/tilt mirror and a fast low-noise sCMOS camera that are controlled by a commercial workstation implementing a forecasting algorithm to achieve PSF stability. In this talk we present the system architecture and discuss our promising laboratory test results as well as next implementation.

Primary author

Massimiliano Mattioli (Istituto Nazionale di Astrofisica (INAF))


Mr Alessandro Terreri (INF-AOR) Fernando Pedichini (Istituto Nazionale di Astrofisica (INAF)) Gianluca Li Causi (Istituto Nazionale di Astrofisica (INAF)) Marco Stangalini (Istituto Nazionale di Astrofisica (INAF)) R. Piazzesi Simone Antoniucci (INAF - OAR) Vincenzo Testa (Istituto Nazionale di Astrofisica (INAF))

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