Stars and Sextants, 1904: Star Distance Tables for Facilitating the Use of Lord Ellenborough's Method of Correcting the Centring and Total Errors of Sextants at Sea (Classic Reprint) - Couverture souple
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Stars and Sextants, 1904 (Classic Reprint)
impression à la demandeVendeur : Forgotten Books, London, Royaume-Uni
Évaluation du vendeur 4 sur 5 étoiles
Paperback. Etat : New. Print on Demand. This book presents a groundbreaking method for determining and correcting sextant errors at sea using star distances. While traditionally considered impractical due to complexities involving refraction and aberration, the author introduces a simplified approach that eliminates these challenges. By focusing on observations where stars are aligned on the same vertical great circle, refraction calculations are reduced to basic addition and subtraction. Additionally, the book provides guidance on identifying suitable star pairs and the specific times when their distances are minimally affected by aberration, thus ensuring accurate sextant error correction. Delving into the historical neglect of sextant error correction, particularly centring error, the author emphasises the potential consequences of using faulty instruments for navigation. This book advocates for a more rigorous approach to sextant maintenance and provides mariners with the tools to achieve optimal accuracy. With its comprehensive tables, clear instructions, and practical examples, this book empowers navigators to confidently correct their sextants at sea, ensuring safer and more efficient voyages. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. N° de réf. du vendeur 9781332943050_0
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EUR 16,36
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Expédition depuis Royaume-Uni vers Etats-Unis
Expédition depuis Royaume-Uni vers Etats-Unis
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Stars and Sextants, 1904 Star Distance Tables for Facilitating the Use of Lord Ellenborough's Method of Correcting the Centring and Total Errors of Sextants at Sea Classic Reprint
Vendeur : PBShop.store US, Wood Dale, IL, Etats-Unis
Évaluation du vendeur 5 sur 5 étoiles
PAP. Etat : New. New Book. Shipped from UK. Established seller since 2000. N° de réf. du vendeur LW-9781332943050
Acheter neuf
EUR 26,01
Livraison gratuite
Expédition nationale : Etats-Unis
Expédition nationale : Etats-Unis
Quantité disponible : 15 disponible(s)
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Stars and Sextants, 1904 Star Distance Tables for Facilitating the Use of Lord Ellenborough's Method of Correcting the Centring and Total Errors of Sextants at Sea Classic Reprint
Vendeur : PBShop.store UK, Fairford, GLOS, Royaume-Uni
Évaluation du vendeur 5 sur 5 étoiles
PAP. Etat : New. New Book. Shipped from UK. Established seller since 2000. N° de réf. du vendeur LW-9781332943050
Acheter neuf
EUR 24,85
Expédition à EUR 3,79
Expédition depuis Royaume-Uni vers Etats-Unis
Expédition depuis Royaume-Uni vers Etats-Unis
Quantité disponible : 15 disponible(s)