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Towards the MICADO@ELT PSF-R with simulated and real data by Simioni, Matteo; Arcidiacono, Carmelo; Grazian, Andrea; Gullieuszik, Marco; Portaluri, Elisa; Vulcani, Benedetta; Wagner, Roland; Zanella, Anita is a scholarly article available to read on EtoBox.

What is Towards the MICADO@ELT PSF-R with simulated and real data about?

Observations close to the diffraction limit, with high Strehl ratios from Adaptive Optics (AO)-assisted instruments mounted on ground-based telescopes are a reality and will become even more widespread with the next generation instruments that equip 30 meter-class telescopes. This results in a growing interest in tools and methods to accurately reconstruct the observed Point Spread Function (PSF) of AO systems. We will discuss the performance of the PSF reconstruction (PSF-R) software developed in the context of the MICADO instrument of the Extremely Large Telescope. In particular, we have recently implemented a novel algorithm for reconstructing off-axis PSFs. In every case, the PSF is reconstructed from AO telemetry, without making use of science exposures. We will present the results coming from end-to-end simulations and real AO observations, covering a wide range of observing conditions. Specifically, the spatial variation of the PSF has been studied with different AO-reference star magnitudes. The reconstructed PSFs are observed to match the reference ones with a relative error in Strehl ratio and full-width at half maximum below 10% over a field of view of the order of one a

Author

Simioni, Matteo; Arcidiacono, Carmelo; Grazian, Andrea; Gullieuszik, Marco; Portaluri, Elisa; Vulcani, Benedetta; Wagner, Roland; Zanella, Anita

Published

2023

Language

EN