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Derogator vs Derotator - What's the difference?

derogator | derotator |

As nouns the difference between derogator and derotator

is that derogator is a detractor while derotator is (astronomy) any optical, electronic or digital device that corrects for the rotation of an image or field of view as a telescope tracks.

derogator

English

Noun

(en noun)
  • A detractor.
    • (Webster 1913) ----

    derotator

    English

    Noun

    (en noun)
  • (astronomy) Any optical, electronic or digital device that corrects for the rotation of an image or field of view as a telescope tracks