Open AccessHyperspectral all-sky imaging of auroras
Author(s) -
F. Sigernes,
Yuriy Ivanov,
S. A. Chernouss,
T. Trondsen,
A. V. Roldugin,
Yu. V. Fedorenko,
B. V. Kozelov,
A. S. Kirillov,
Илья Александрович Корнилов,
В. В. Сафаргалеев,
S. E. Holmen,
M. E. Dyrland,
D. A. Lorentzen,
Lisa Baddeley
Publication year - 2012
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.027650
Subject(s) - hyperspectral imaging , sky , optics , remote sensing , visible spectrum , observatory , physics , diffuse sky radiation , wavelength , night sky , lens (geology) , astronomy , geology , scattering
A prototype auroral hyperspectral all-sky camera has been constructed and tested. It uses electro-optical tunable filters to image the night sky as a function of wavelength throughout the visible spectrum with no moving mechanical parts. The core optical system includes a new high power all-sky lens with F-number equal to f/1.1. The camera has been tested at the Kjell Henriksen Observatory (KHO) during the auroral season of 2011/2012. It detects all sub classes of aurora above ~½ of the sub visual 1kR green intensity threshold at an exposure time of only one second. Supervised classification of the hyperspectral data shows promise as a new method to process and identify auroral forms.