Evaluating the performance of an Ingot wavefront sensor for the ELT: good news from simulations

Elisa Portaluri; Valentina Viotto; Roberto Ragazzoni; Carmelo Arcidiacono; Davide Greggio; Kalyan Kumar Radhakrishnan Santhakumari; Maria Bergomi; Simone Di Filippo; Jacopo Farinato; Demetrio Magrin

doi:10.1117/12.2562190

13 December 2020 Evaluating the performance of an Ingot wavefront sensor for the ELT: good news from simulations

Elisa Portaluri, Valentina Viotto, Roberto Ragazzoni, Carmelo Arcidiacono, Davide Greggio, Kalyan Kumar Radhakrishnan Santhakumari, Maria Bergomi, Simone Di Filippo, Jacopo Farinato, Demetrio Magrin

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Proceedings Volume 11448, Adaptive Optics Systems VII; 114483I (2020) https://doi.org/10.1117/12.2562190
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

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Abstract

As the new generation of telescopes is coming soon, we need to solve or improve some issues related to the adaptive optics techniques, necessary to fully exploit their extraordinary capabilities in terms of sensitivity and resolution. The Ingot wavefront sensor was thought to overcome some limitations due to the use of artificial sources instead of natural ones: it is designed to cope with the typical elongation of Sodium Laser Guide stars that will be used by the ELTs. Here we present the preliminary tests we performed to properly set up an end-to-end simulator, in order to evaluate the performance of such a device. We describe the different configurations considered and the assumptions we made, discussing also some computational problems we faced building up the tool. We also show the results of the first simulations obtained closing the loop with a mock ELT telescope.

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Elisa Portaluri, Valentina Viotto, Roberto Ragazzoni, Carmelo Arcidiacono, Davide Greggio, Kalyan Kumar Radhakrishnan Santhakumari, Maria Bergomi, Simone Di Filippo, Jacopo Farinato, and Demetrio Magrin "Evaluating the performance of an Ingot wavefront sensor for the ELT: good news from simulations", Proc. SPIE 11448, Adaptive Optics Systems VII, 114483I (13 December 2020); https://doi.org/10.1117/12.2562190

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