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Published online by Cambridge University Press: 30 January 2013
The Fish-Eye lens MAO-08 is intended for observations of weak extended objects (aurora, twilight and dawn phenomena, stratospheric clouds, etc.) in narrow spectral bands with variable passband filters VARISPEC and in white light. It is valuable for astronomical observation for the target – background problem when we need to estimate the spectral transparence of the atmosphere. Besides having high power this lens can be used for meteor observations. It has been tested during the winter field conditions.