There's no way around it: Celestial navigation using a sextant is a complex and involved process that involves a fair amount of calculating, correcting, referring to tables, knowledge of the ...

There's nothing mystical or complicated about a sextant. All it is is a device that measures the angle between two objects. The sextant makes use of two mirrors. With this sextant, one of the ...

This eventually gave rise to the sextant, which uses two mirrors to view the heavenly body and the horizon. To make it work, ...

An artificial horizon for sea use has been wanted for the last hundred years; in fact, ever since the sextant came into general ... sun or the stars be in plain view. Many efforts have been ...