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n.1.(Astron.) A reflecting telescope, part of which is made to rotate eccentrically, so as to produce a ringlike image of a star, instead of a point; - used in studying the scintillation of the stars.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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buyers of his chromatoscope that it would correct deficiencies in