FASS: a turbulence profiler based on a fast, low-noise camera

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dc.contributor.authorGuesalaga, A.
dc.contributor.authorAyancan, B.
dc.contributor.authorSarazin, M.
dc.contributor.authorWilson, R. W.
dc.contributor.authorPerera, S.
dc.contributor.authorLe Louarn, M.
dc.date.accessioned2025-01-20T23:54:31Z
dc.date.available2025-01-20T23:54:31Z
dc.date.issued2021
dc.description.abstractThe measurement of the atmospheric optical turbulence with a new scintillation profiler is described and demonstrated. The instrument, FASS (Full Aperture Scintillation Sensor), uses new fast and low-noise detectors to record and process sequences of scintillation images. Statistical processing of these data is based on the calculation of power spectra of intensity in annular pupil zones over the angular coordinate. The angular power spectra are used to measure the optical turbulence intensity of 14 layers located at logarithmically spaced distances from 0.3 to 25 km. The reference functions relating turbulence strength to the angular power spectra are computed by numerical simulation. Measurement of the ground-later turbulence and total seeing with FASS is possible when the detector is conjugated to a negative (below ground) distance. Results of measurement campaigns at Paranal are reported, documenting a good agreement of turbulence profiles measured by FASS with two other instruments, SCIDAR and MASS.
dc.description.funderChilean Agency for Research and Development (ANID), project Fondecyt
dc.fuente.origenWOS
dc.identifier.doi10.1093/mnras/staa3823
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/staa3823
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95031
dc.identifier.wosidWOS:000608475600103
dc.issue.numero2
dc.language.isoen
dc.pagina.final3045
dc.pagina.inicio3030
dc.revistaMonthly notices of the royal astronomical society
dc.rightsacceso restringido
dc.subjectatmospheric effects
dc.subjectadaptive optics
dc.subjectsite testing
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleFASS: a turbulence profiler based on a fast, low-noise camera
dc.typeartículo
dc.volumen501
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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