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Inverting the Sextant The standard way to do star or planet sights that have not been precomputed. Set the sextant to 0° 0', turn it upside down in the left hand, then looking up toward the star, keep the star in direct view as you use the right hand to adjust the sextant to bring the horizon up to the star. Once star and horizon are both in view, turn the sextant back over and complete the sight in the normal manner. See Precomputation and Sextant Sights.

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