guiding telescope

noun

Definition of guiding telescope

: a visual telescope mounted rigidly parallel to a photographic telescope and used by an observer to supplement the clock motion in maintaining immovable the image of a heavenly body on the photographic plate

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“Guiding telescope.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/guiding%20telescope. Accessed 19 Jan. 2021.

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