An all-sky camera for recording three auroral emissions

Abstract

The EKA-3/180-11 emission camera creates a snapshot of the celestial hemisphere in the selected auroral emissions of 427.8, 557.7, and 630.0 nm, and makes it possible to determine the spatial distribution of the intensity of these emissions. The instrument is based on an EMCCD camera; the spectral selection is carried out by interference filters. Scanning in spectral channels is carried out by an electromechanical filter wheel with a frame rate of 0.1 Hz. The instrument is designed for regular ground observations and acts as both a narrow-angle emission photometer and an all-sky camera.