Optical turbulence profiling with the SALTO demonstrator
(2025) Communications and Observations through Atmospheric Turbulence (COAT) 2025 — Location: Oberpfaffenhofen, Germany
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- Abstract
- As part of the SALTO project, a 1-m class telescope equipped with adaptive optics and a laser guide star has been installed at Redu Space Services, in the Belgian countryside. In this work, we explore the possibility of using the SALTO demonstrator to measure optical turbulence profiles. Our approach is based on the operating principle of the Single Coupled Slopes and Intensities Detection and Ranging (SCO-SLIDAR) and the Shack-Hartmann Image Motion Monitor (SHIMM) instruments. It makes use of the Shack-Hartmann wavefront sensor (SHWFS) spatial covariances of slopes and intensities to define an inverse problem from which vertical profiles of the refractive index structure parameter, Cn2, can be derived. To the best of our knowledge, our work presents the first Cn2 profiles measured in Belgium. Our preliminary results include several sets of SHWFS data collected during the night of March 06, 2025. Measured Cn2 profiles are compared with predictions from a numerical weather prediction software.
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Quatresooz, F., Gilles Orban de Xivry, Bissot, L., Vincent Moreau, Olivier Absil, & Oestges, C. (2025). Optical turbulence profiling with the SALTO demonstrator. Proceedings Communications and Observations through Atmospheric Turbulence (COAT) 2025. Published. Communications and Observations through Atmospheric Turbulence (COAT) 2025, Oberpfaffenhofen, Germany. https://hdl.handle.net/2078.5/266621