A Hand-book For Star Double-altitudes, With Directions For Selecting The Stars
A Hand-book For Star Double-altitudes, With Directions For Selecting The Stars is a practical guide to celestial navigation, written by Alfred Challice Johnson. This handbook provides detailed instructions for using star double-altitudes to determine one's position at sea or on land. Intended for navigators, surveyors, and anyone interested in practical astronomy, the book offers a clear and concise methodology for selecting stars and calculating altitudes, offering a valuable resource for both beginners and experienced practitioners. With its focus on practical application, this handbook remains a useful reference for those studying or employing celestial navigation techniques.
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