Here you will find one or more explanations in English for the word Chromatoscope.
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Chromatoscope
Chromatoscope Chro"ma*to*scope`, n. [Gr. ?, ?, color +
-scope.] (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.
Meaning of Chromatoscope from wikipedia