{"product_id":"the-star-almanac-for-land-surveyors-np321","title":"The Star Almanac for Land Surveyors (NP321)","description":"\u003cp\u003eUnlock the secrets of the night sky with The Star Almanac for Land Surveyors, a vital tool for anyone engaged in land surveying and celestial navigation. This ADMIRALTY Astronomical Publication is designed to provide you with comprehensive information to aid in your marine celestial navigation endeavors.\u003c\/p\u003e\n\u003cp\u003eThe Star Almanac for Land Surveyors delivers clear and precise positions of major and selected bright stars, formatted in a user-friendly table for easy access and identification. Whether you are a seasoned surveyor or just starting, this almanac is indispensable. Use it to accurately determine your geographical position or find true north through astronomical observations.\u003c\/p\u003e\n\u003cp\u003eThis edition is equipped with several essential features that enhance its usability:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA CD that includes the almanac in PDF format, along with ASCII files containing the coefficients that represent the positions of the Sun and stars.\u003c\/li\u003e\n\u003cli\u003eAccurate coefficients for calculating the Greenwich hour angle and declination of all published stars, precise to about 1 arcsecond.\u003c\/li\u003e\n\u003cli\u003ePolynomial coefficients to facilitate calculations for R (GHA Aries - UT), declination, E, and the semi-diameter of the Sun.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith its detailed data, The Star Almanac for Land Surveyors is not just a book; it is a comprehensive guide that elevates your surveying capabilities. Don’t miss out on this essential resource that combines precision with practicality. Enhance your celestial navigation skills today with this powerful tool!\u003c\/p\u003e","brand":"United Kingdom Hydrographic Office","offers":[{"title":"2026","offer_id":46973196828917,"sku":"NP321-26","price":45.95,"currency_code":"USD","in_stock":true},{"title":"2027","offer_id":48586326704373,"sku":"9780707746678","price":45.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0090\/5072\/files\/the-star-almanac-for-land-surveyors-np321-1190120555.jpg?v=1756477486","url":"https:\/\/www.amnautical.com\/es\/products\/the-star-almanac-for-land-surveyors-np321","provider":"American Nautical Services","version":"1.0","type":"link"}