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Definition of Derotator
1. Noun. (astronomy) Any optical, electronic or digital device that corrects for the rotation of an image or field of view as a telescope tracks ¹
¹ Source: wiktionary.com
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1. Noun. (astronomy) Any optical, electronic or digital device that corrects for the rotation of an image or field of view as a telescope tracks ¹
¹ Source: wiktionary.com