equatorial mounting

noun

an astronomical telescope mounting that allows motion of the telescope about two mutually perpendicular axes, one of which is parallel to the earth's axis

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No part of the equatorial mounting is shown in the figure, as it resembles in every respect the usual Fraunhofer mounting.

This alteration and the new equatorial mounting have been admirably made by Grubb; the result is completely successful.

The director must, of course, have a full equatorial mounting, with circles some two hundred and fifty feet in diameter.

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