Tom Cunliffe believes that making the most of the beauty of the night sky is a real winter morale lifter, and he reveals the secret of accurate sight-taking! A modern world of navigation, has bought ...

There are some things that you know are going to be hard, but you do them anyway. In high school it may have been the calculus exam. In real life I attempted to learn celestial navigation a couple of ...

A new Digital Sextant has been engineered to provide back-up navigation in the event of failure or malicious adjustment of the GPS system, says manufacturer ScanjetPSM. The Digital Sextant provides a ...