Optical turbulence profiling with SloDAR in the Canadian High Arctic

Par Conseil national de recherches du Canada

DOI	Trouver le DOI : https://doi.org/10.1117/12.2056588
Auteur	Rechercher : Maire, Jérôme; Rechercher : Mieda, Etsuko; Rechercher : Steinbring, Eric¹; Rechercher : Murowinski, Richard¹; Rechercher : Graham, James R.; Rechercher : Carlberg, Raymond; Rechercher : Wright, Shelley A.; Rechercher : Law, Nicholas M.; Rechercher : Sivanandam, Suresh
Affiliation	Conseil national de recherches du Canada. Infrastructure scientifique nationale
Format	Texte, Article
Conférence	Ground-Based and Airborne Telescopes V, June 22-27, 2014
Sujet	Airborne telescopes; Atmospheric thermodynamics; Atmospheric turbulence; Boundary layers; Earth (planet); Research laboratories; Space optics; Wavefronts; Astronomical instrument; Astronomical observation; Atmospheric characterization; Atmospheric research; Canadian high arctic; Polar environments; Shack-Hartmann wavefront sensors; Wave front sensors; Adaptive optics
Résumé	The Earth's polar regions offer unique advantages for ground-based astronomical observations with its cold and dry climate, long periods of darkness, and the potential for exquisite image quality. We present preliminary results from a site-testing campaign during nighttime from October to November 2012 at the Polar Environment Atmospheric Research Laboratory (PEARL), on a 610-m high ridge near the Eureka weatherstation on Ellesmere Island, Canada. A Shack-Hartmann wavefront sensor was employed, using the Slope Detection and Ranging (SloDAR) method. This instrument (Mieda et al, this conference) was designed to measure the altitude, strength and variability of atmospheric turbulence, in particular for operation under Arctic conditions. First SloDAR optical turbulence profiles above PEARL show roughly half of the optical turbulence confined to the boundary layer, below about 1 km, with the majority of the remainder in one or two thin layers between 2 km and 5 km, or above. The median seeing during this campaign was measured to be 0.65 arcsec.
Date de publication	2014-07-22
Maison d’édition	SPIE
Dans	Ground-Based and Airborne Telescopes V, 91453J.
Série	Proceedings of SPIE, nº 9145.
Langue	anglais
Publications évaluées par des pairs	Oui
Numéro NPARC	21275466
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	207ec278-c466-4f29-abe4-40f412c64d4a
Enregistrement créé	2015-07-14
Enregistrement modifié	2020-04-22

Date de modification :: 2024-10-03