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Pronunciation varies by accent · noun
(astronomy) Any optical, electronic or digital device that corrects for the rotation of an image or field of view as a telescope tracks.
Use derotator when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Derotator means (astronomy) Any optical, electronic or digital device that corrects for the rotation of an image or field of view as a telescope tracks.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use derotator where its definition matches the intended context.
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