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Celestial navigation: understanding the night sky


Yachting Monthly
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You don t need complicated maths or even a sextant to enjoy the night sky and use it for navigation, says William Thomson
Celestial navigation is easier than you think. Credit: Alamy
Understanding the night sky
One of my most prized possessions is a book, The History of Seafaring, Navigating the World’s Oceans, by the American sailor Donald S. Johnson.
A treasure trove of priceless knowledge, the story shares our progression in wayfinding since humans first clambered into hollowed-out tree trunks thousands of years ago, and it has taught me that although celestial navigation is ancient, it is also timeless and equally practical today as it was in the days of Captain Cook. ....

United States , William Thomson , Nicolaus Copernicus , Donalds Johnson , Toby Heppell , Roman Inquisition , North Pole , June Solstice , Hour Angle , Star Compass , Yachting Monthly , Magazines Direct , ஒன்றுபட்டது மாநிலங்களில் , வில்லியம் தாம்சன் , நிக்கோலஸ் கோப்பர்நிக்கஸ் , டொனால்ட்ஸ் ஜான்சன் , டோபி ஹெப்பல் , ரோமன் விசாரணை , வடக்கு போலே , ஜூன் சங்கிராந்தி , மணி கோணம் , நட்சத்திரம் திசைகாட்டி , படகு பயணம் மாதாந்திர , பத்திரிகைகள் நேரடி ,

Longines' Avigation BigEye is 90 years old – and looking fabulous


It’s a truth universally acknowledged that in contemporary watchmaking vintage reissues tend to be crowd-pleasers. The recent enthusiasm for revived classics has driven a broad trend among major watch houses over the past few years, prompting many to dig back into their sometimes centuries-long archives and dust off forgotten masterpieces. Typically, these watches are revamped with more powerful, accurate movements and sturdier cases, but the look and feel of the original is retained with varying degrees of verisimilitude.
Long before this trend took hold, though, a handful of horologers were already revisiting their greatest creations. As far back as 1987, Longines was doing just that, when it launched a re-creation of the Hour Angle watch it first produced in 1931. Indeed, the Saint-Imier brand, which was founded in 1832, has a long and storied tradition of making excellent pilot’s watches and launched a dedicated Heritage line for re-editions back in 2001. That co ....

Charles Lindbergh , French Navy , Hour Angle , Longines Heritage Military Marine Nationale , Marine Nationale , Amelia Earhart , சார்லஸ் லிண்ட்பெர்க் , பிரஞ்சு கடற்படை , மணி கோணம் , லொன்கினேச் பாரம்பரியம் இராணுவம் கடல் தேசிய , கடல் தேசிய , அமெலியா ஏஅர்ர்த் ,