Letter to the Editor Laser guide star adaptive optics: measuring the sodium column density using a magneto-optical filter
نویسندگان
چکیده
A general use of the adaptive optics requires an artificial guide star created by focusing a laser beam tuned to the sodium D2 line. We propose here a system to monitor the column density of the mesospheric sodium layer which is based on the sodium magneto-optical filter already widely used in solar observations. The principal characteristics of this system are high transmission and high spectral resolution which allow to perform measurements in minutes on a relatively small (e.g. 50 cm diameter) telescope, where the filter can easily mounted due to its compactness.
منابع مشابه
A System for the Monitoring of the Mesospheric Sodium Layer Using a Magneto-optical Filter
A general use of the adaptive optics require an artiicial guide star created by focusing a laser beam tuned to the sodium D 2 line. We propose here a system to monitor the column density of the mesospheric sodium layer which is based on the sodium magneto-optical lter (MOF) already widely used in solar observations. The principal characteristics of this system are high transmission and high spe...
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