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 ...

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 ...

ARMSTRONG: It's really a fantastic sight through that sextant…and a minute ago during that auto-manoeuvre the radical swept across the Mediterranean and you could see all of North Africa ...

Sextants use a similar premise to astrolabes to navigate at sea, but sextants were designed specifically for this purpose.