NirvanaVIS: exploiting ground-layer AO correction for speckle holography at visible wavelengths

M. Bergomi; C. Arcidiacono; M. Dima; S. Di Rosa; D. Greggio; L. Marafatto; K. Radhakrishnan; G. Umbriaco; J. Farinato; R. Ragazzoni; V. Viotto; T. Bertram; P. Bizenberger; F. Briegel; L. Mohr; T. Herbst

doi:10.1117/12.3018324

18 July 2024 NirvanaVIS: exploiting ground-layer AO correction for speckle holography at visible wavelengths

M. Bergomi, C. Arcidiacono, M. Dima, S. Di Rosa, D. Greggio, L. Marafatto, K. Radhakrishnan, G. Umbriaco, J. Farinato, R. Ragazzoni, V. Viotto, T. Bertram, P. Bizenberger, F. Briegel, L. Mohr, T. Herbst

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130969F (2024) https://doi.org/10.1117/12.3018324
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

NirvanaVIS is a proposed upgrade in the visible wavelength for LINC-NIRVANA, the Italian-German high angular resolution near-infrared imager installed on the Large Binocular Telescope. LINC-NIRVANA has demonstrated on-sky, a Ground Layer Adaptive Optics correction improving the FWHM of the PSF up to a factor three within a 2 arcmin diameter field of view. We aim to exploit the AO correction in the visible wavebands (600 to 1000 nm) to achieve on a large FoV AO-assisted speckle holography, in which images are reconstructed from several short exposure frames. We will present the consolidated opto-mechanical design, featuring an 8K fast-frame CMOS, identified to allow this additional mode. We will focus on analysis, trade-offs, simulations, and compromises taken to reach our science objectives, including ways to solve the extra challenge given by a huge amount of data to be acquired and stored while keeping all functionalities of the NIRVANA instrument.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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M. Bergomi, C. Arcidiacono, M. Dima, S. Di Rosa, D. Greggio, L. Marafatto, K. Radhakrishnan, G. Umbriaco, J. Farinato, R. Ragazzoni, V. Viotto, T. Bertram, P. Bizenberger, F. Briegel, L. Mohr, and T. Herbst "NirvanaVIS: exploiting ground-layer AO correction for speckle holography at visible wavelengths", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130969F (18 July 2024); https://doi.org/10.1117/12.3018324

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