Simulation of pupil-plan observation of angle-of-arrival fluctuations in daytime turbulence
- Others:
- Centre de Recherche en Astronomie Astrophysique et Géophysique (CRAAG)
- Laboratoire Universitaire d'Astrophysique de Nice (LUAN) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Description
High angular resolution observations of the sun are limited by atmospheric turbulence. The MISOLFA seeing monitor (still under construction) is developed to obtain spatial and temporal statistical properties of optical turbulence by analyzing local motions observed on solar edge images. The solar flying shadows used for angle-of-arrival spatio-temporal analysis are observed in the pupil plane image by mean of a rectangular thin slit positioned on the solar edge image. A numerical simulation of the light propagation in both the atmospheric turbulence medium and the MISOLFA optical system is carried out studying the relation of the measured intensity variations in the pupil plane to angle-of-arrival fluctuations in the non-isoplanatic case. First results are presented and discussed.
Abstract
International audience
Additional details
- URL
- https://hal.archives-ouvertes.fr/hal-00435967
- URN
- urn:oai:HAL:hal-00435967v1
- Origin repository
- UNICA